Installation
Answers to queries regarding installation.
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Can I use Siniat Intumescent Acoustic Sealant instead of the taping and jointing process, when boards don't need decoration?
Siniat have not tested internal drywall systems with the plasterboard joints treated with our intumescent sealant . As such, for Siniat to warrant system performance, the board joints must have the tape and joint process or a reinforced joint skim finish applied. Details of the tape and joint process can be found in the Siniat Drywall Manual . Fo
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What is the minimum distance I should have between horizontal board joints?
The minimum recommended stagger between board joints in successive layers is 300mm as per the Siniat drywall manual recommendations.
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How can you hang or fix things to plasterboard walls?
There are a number of suitable fixings which can be used to hang things onto plasterboard walls. These fixings have a greater pull-out resistance, allowing for greater confidence in hanging shelves, pictures and other fixtures. For large and/or heavy items, it is recommended to provide local reinforcement to the partition with a pattress or timber
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What is the minimum radius that the 6mm Siniat Contour board can bend for the installation of a curved partition?
The minimum radius is 900mm and this is achieved by installing the board horizontally using a GTEC deep flange flex track , GTEC C-studs at 200mm centres and fixing the boards to a continuous band of GTEC Flat strap backing the horizontal joints.
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What is the minimum depth to allow for the installation of a Siniat Metal Frame suspended ceiling system?
The minimum drop of the MF ceiling grid must allow for the installation of the grid components. The Primary channel is 44mm deep, ceiling channel 25mm deep. You will also need to factor in the hanger which needs enough space to comfortably and safely install. This will result in an overall depth of around 100mm. Depending on specification you may n
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What load can a Siniat Metal frame suspended ceiling system take?
The standard grid installation for the MF ceiling system is based on 1200mm x 1200mm x 400mm relating to the installation centres of the hangers, primaries and ceiling components. This grid is capable of supporting 35kg/m2 including self weight. Should you need to support a greater weight, the centres of the primary channels can be reduced, thus inc
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What EPDM do Siniat recommend for use with Weather Defence™?
Siniat do not have any specific recommendations for waterproofing products/membrane manufacturers for use with the board. Siniat advise that an appropriate cold-applied sealing methods such as butyl tapes or EPDM (by others) should be used to seal deflection or movement joints created in the board layer, or to infill panel edges to other materials (
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Can hot melt waterproofing systems be used with Weather Defence™?
Siniat do not recommend the use of hot-applied waterproofing materials with Weather DefenceTM . You must only use cold applied waterproofing materials. Gypsum based boards should not be subjected to temperature conditions where the surface of the board is likely to rise above 50°C, as the state of the surface and core can begin to change beyond this
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Can you use Siniat Universal Bonding Compound on external walls?
Solid external walls are not suitable for the direct bond system as these areas can be prone to moisture ingress. Cavity walls are suitable as the cavity minimizes the amount of water that can be pulled through by the dab. The bonding compound can draw in moisture from the masonry background which is absorbed by the adhesive compound. This can caus
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What weight can be fixed to the Siniat resilient bar?
37kg/m2 is the limit of weight able to be applied to a Resilient Bar in both vertical and horizontal planes, where the resilient bar is at 400mm centres and joists/stud are at 400mm centres. 25kg/m2 is the limit of weight able to be applied to a resilient bar in both vertical and horizontal planes, where the resilient bar is at 400mm centres and joi
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Can I dot and dab onto tanking membrane?
This will depend on what the tanking membrane is, but in most cases the answer will be no. The very nature of what these products are will prevent some suction of moisture into the substrate from the dab which is partly how it forms the bond. It is recommended to use a framed lining system in such areas, specifically an independent lining so as no
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What is the working temperature of Universal Bonding Compound?
Universal Bonding Compound should not be used when the temperature is 5 degrees or below at the time of use or within its curing period. It should also not be applied if the temperature is above 35 degrees or above as this causes the compound to dry too quickly before hydration is completed.
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Can I use skrim tape in a taping and jointing process?
Siniat recommend a full paper tape reinforcement at board joints using Siniat Joint tape . This will provide the strongest joint treatment and minimises the risk of cracking. Siniat Patching tape is recommended for patching up small, damaged areas.
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Does Siniat sell skim plaster?
No. Siniat does not manufacture skim plaster. However, third party skim plaster can be used on our boards as an alternative to taping and jointing. Refer to skim manufacturer's guidance for application details.
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Do I need to use a moisture resistant plasterboard if I am applying a full height tiled finish?
Siniat recommend the use of a Moisture resistant plasterboard in areas of high humidity like bathrooms for example. The final finish will be the first line of defence against moisture, but over time water can soak through grout if not sealed adequately. A moisture resistant board will give further defence to temporary exposure. Siniat supplies Mois
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Can I omit my breather membrane when using Weather Defence™?
Siniat Weather DefenceTM does act as a breather membrane when installed and sealed in line with the installation procedure. The board and sealing have been tested to show negligible air leakage (0.002 m3/m2/hr). The prevention of water penetration test demonstrated performance at the highest level - Class W1 to EN13859-2 matching that of standalone
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Can cavity barriers be directly fixed to Weather Defence?
Siniat general recommendations are to fix 3rd party products through the Weather Defence board into the supporting metal or timber framework behind which will be installed at maximum 600mm centres. It is possible to fix in the board only, for this the correct fixing type and number of fixings used must be correctly to install the product and provide
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Which way round should a plasterboard be installed?
Siniat Plasterboards must be installed with the printed side against the substrate The back of all plasterboards will have printed text detailing product manufacture data and board type. his must not be visible after installation. For tapered edge boards, the taper is front face only and so can only be jointed on that side in order to minimise the
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Do I need to tape and joint a partition where it is above ceiling level?
Plasterboard joints must not be left untreated above the ceiling level. The joint treatment is required as part of a fire resisting system as well as the acoustic performance. A typical plasterboard joint consists of the bed, fill and finish stages. The paper joint tape is bedded in and filled in the taper zone of a plasterboard. This is the minimum
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Can I use a regular CH Stud as a starter stud?
No. When starting a run of Siniat Shaftwall, the starter (and end) stud must be the Siniat E Stud (ES19xx/B).
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What fixing should I use for fixing Siniat metal framework to masonry backgrounds?
The responsibility for the fixing type to secure Siniat components to the structure is with the installer. They need to select an appropriate fixing to suit the substrate and ensure it achieves the minimum embedment depth and supports the load. A specialist fixing supplier can advise here if required.
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What are the maximum tile weights for Siniat boards?
When considering a tile finish the framing substrate should be reduced to 400mm maximum centres. The maximum weight of tile that can be applied is as shown in the table below: Siniat Board(s) Maximum tile weight at 400mm stud centres Siniat Tilebacker board 60kg/m2 Siniat Aquaboard 50kg/m2 All other boards 32kg/m2 You can also find out more reg
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Can I skim LaDura Board?
Yes you can apply a skim finish to the Siniat LaDura plasterboard. As it is a moisture resistant board you will need to pretreat the board with a bonding agent first.Then follow the guidance of the chosen skim product manufacturer. Siniat LaDura is designed as a robust board and consideration should be given to the type of skim plaster should the fi
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Is Siniat Intumescent acoustic mastic compatible with cPVC products?
No. Siniat have been advised that the Siniat Intumescent Acoustic Mastic is not suitable for use with cPVC products as per the Lubrizol assessment. The only solution within the Etex group is to use the Promat Promaseal HPEx Sealant to seal penetrations by cPVC pipework through Siniat plasterboard systems.
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When should I use the MFCCLIP Connecting Clip to secure the Ceiling Channel to the Primary Channel and when should I screw fix the two components together?
Siniat Connecting Clips (MFCCLIP) may only be used to connect Siniat Ceiling Channel to Primary Channel when only a single layer of plasterboard is fixed to the grid with no additional loadings. For double layer systems use 12mm Siniat Wafer Head Self Drilling Screws. Two fixings must be used each side of the ceiling channel into the primary chann
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Can I apply a skim finish to Moisture or Fire Moisture board?
Any of the Siniat Internal Plasterboards can receive a skim finish. Please refer to Annex a2 in the Siniat drywall manual for more details on applying a skim finish to plasterboards. With any Siniat moisture resistant board, the surface will require pre-treatment with a suitable bonding agent before the skim can be applied. The chosen skim manufactu
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Can Siniat Thermal boards be adhesively fixed with the dot & dab method?
Siniat Plasteboards (excluding the foil backed boards) and Siniat Thermal plasterboards (details in Annex B of the Siniat Drywall Manual) can be used to line most masonry walls with the Universal bonding compound. Direct Bond lining systems are suitable for most level, masonry substrates. The substrate must be clean and dust free with all loose mat
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Are plasterboards required to be pretreated prior to a tile finish being applied?
When it is desired to a have a tiled finish to a plasterboard surface, depending on the usage of the room, there are certain steps to take. For tiling to plasterboards (not high humidity or wet areas) on a partition or lining, the stud centres must be reduced to maximum 400mm centres, the joints reinforced with paper tape and filled (not the full ta
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Which flat strap should be used to back horizontal joints in plasterboard outer layers?
Where the system is only lined with a single skin of plasterboard, the flat strap will be fixed direct to the studs and must be the FS90W. For systems which are double boarded, flatstrap can be installed in between the board layers (positioned to pick up the outlayer horizontal joint) and this can be the FS50Rx strap. However if positioned against
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What tape I should use when applying taping and jointing finish on Siniat Aquaboard?
With Siniat Aquaboard, the board joints are reinforced with the Siniat Joint tape as other boards. There is not a special tape in this case. The difference that does exist is with the jointing compound. Only Siniat Aquamix can be used for all stages of the joint on Siniat Aquaboard. Further information can be found on the following Siniat Aquabaoar
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Does Siniat have Shaftwall solutions for horizontal applications?
Siniat do not currently have a tested horizontal shaftwall. The Siniat Shaftwall range is for vertical application only. Promat do have options for horizontal membranes that may suit your application.
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Could I install cable penetration through head track?
It is recommended cable penetrations avoid framing components and penetrate board only. The hole should be as tight as possible with Siniat Intumescent Acoustic Sealant to seal the hole to the cable. For partitions without deflection heads the cable should be installed with enough slack to allow it too drop below the head track and pass through boar
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Can you install back-to-back sockets in a partition?
The standard industry recommendation is to avoid back-to-back sockets wherever possible. Sockets should ideally be installed in their own stud bay to provide a stagger to minimise acoustic loss in combination with the desired baffle to maintain all performances of the system. The penetration must be fire stopped with an appropriate product each si
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What centres must I fix the head track for Siniat Shaftwall systems?
Siniat Shaftwall system must have the head and base tracks fixed at 300mm centres with a suitable fixing which is dependant on the substrate you are fixing too.
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Does Siniat Weather Defence omit the need for a VCL?
The Siniat Weather Defence board does not act as a Vapour control layer. It does work as a breather membrane which may allow for the omission of a separate breather membrane. If required, a vapour control layer (VCL) should be installed on the warm side of the element. This can be via a Siniat vapour check grade plasterboard or a separate membrane d
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Can the Siniat Direct Bond Lining system be used below ground level?
In general it is not recommended to use the Siniat DIrect Bond Lining System below ground level or on any substrates subject to moisture ingress. A mechanical fix lining system, should be used instead. The nature of the gypsum bond would absorb moisture over time which can lead to the degradation of the bond. If the back ground is treated to preven
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What is the coverage of your Siniat Fire Rated Silicone Sealant?
Siniat Fire Rated Silicone Sealant comes in 0.6L foil cartridges. Based on a 6mm diameter bead, you will get approximately 17 linear metres per cartridge..
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How close to the soffit can I penetrate with services when I have a deflection head?
A partition with a deflection head must not have services penetrating in the deflection zone. All service penetrations must be run below the flat strap, otherwise they will interfere with the movement of the detail. The distance between the soffit and the permitted service installation zone will vary depending on the deflection allowance. It will
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What fixings should I use for Aquaboard?
When installing Siniat Aquaboard you must use the Wet area screw variants. High thread screws for timber substrate, self drilling for metal gauge over 0.7mm, self tapping for lighter gauge metal substrate. For timber substrate you need to select a screw length to achieve 25mm penetration into the timber stud, 10mm penetration through metal studs.
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What is the application temperature range of your Fire Rated Silicone Sealant?
The Fire Rated Silicone Sealant should be installed when the ambient temperature is between 5 and 35 degrees. It is recommended to allow the product to acclimatise if stored in a cold area first.
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Can you apply a skim finish to Siniat boards?
Siniat do not manufacture a skim plaster. However, as per the GDPA (Gypsum Product Development Associations) compatibility statement, you can use any of the 3 UK manufactures (Siniat, British Gypsum or Knauf) finishing products i.e. Plasters on the 3 named manufacturers boards. The relevant finishing manufactures advice and guidelines should be foll
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How far can the MF ceiling channel cantilever from hanging point when the perimeter is not fixed?
The maximum cantilever that the Siniat MF Ceiling Channel or Siniat Primary channel can have from the last hanger point, where the Siniat Edge Channel is not fixed is 150mm for non fire rated ceilings.
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What depth of Promat HPEx Sealant is required around cPVC sprinkler Pipes to Non-Fire Rated partitions?
For Non-Fire rated partitions, the depth of Promat HPEx sealant is as per the depth of plasterboard on each side of the partition. This will be a minimum of 12.5mm or 15mm for single sided partitions as this is only creating an acoustic seal in these locations.
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Is it possible to install glazed screens in Siniat Shaftwall systems?
Siniat are unable to provide opening details to support glazing in Shaftwall constructions. If a glazed opening is required in a shaftwall construction then appropriate supporting structural framing (SHS / Goal posts) will need to be provided. This structure will then need to be fire protected using relevant board solutions and the Shaftwall constru
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Can you install back-to-back sockets in a partition?
Standard industry recommendation is to avoid back-to-back sockets wherever possible. Sockets should ideally be installed in their own stud bay with back-to-back sockets being staggered in different stud bays. Where this cannot be avoided then back-to-back sockets should be offset by a minimum of 150mm. Please note that to maintain both the fire an
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Can Siniat support timber frame partitions?
Siniat have limited data on timber frame partitions (Loaded and Un-Loaded). Advice can be given wherever possible, however it is recommended to seek advice from the STA (structural timber association) or other specialist bodies dealing with timber frame systems which may be able to advise more on the boarding required to suit performance criteria. T
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Is there 3rd party accreditation for the installation of Siniat systems similar to the installation of Fire Stopping?
There is currently no approval process or accreditation course for the installation of drywall / SFS systems in the UK. Fire stopping is different in this regard as there are several recognised industry approval processes that can be applied. However, these are optional but tend to be widely adopted and required when installing passive and active fi
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When fixing Siniat framing systems, how far can the partition overhang the structural edge?
For internal Siniat partitions or linings, the base track can cantilever off the structural edge as per the below: Siniat internal frames can cantilever the structural edge by up to 33% of the width of the track. The base / head track fixing should be positioned in the middle third of the track width, staggered within that zone. (i.e no closer tha
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Do Siniat have fire test data to support door openings within partitions?
It is the responsibility of the relevant door manufacturer to provide test data and advise on the construction they used to meet the desired fire performance with their door sets/assemblies. The door details Siniat provide are recommendations to form framed openings to support the door weights as outlined in the site-specific project pack and the G
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Do you need to use Edging Beads with Siniat Systems as they are not available in the range?
The Siniat Edge Bead has been discontinued due to the wider range of product requirements across the market for this application, edging beads are still required and a suitable edging bead should be sourced as required to provide the level of decorative finish and protection as required by the project. It is recommended to use a metal edge bead whe
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Do Siniat require Timber Insert to door Jambs?
The purpose of the timber insert into a door jamb detail is to provide the door set manufacturer the required resistance for their fixings. Siniat have a number of jamb configurations to meet the needs of various door leaf weights, the inclusion of the timber insert to be in line with the door set manufacturer guidance. Examples for single stud sys
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Does the reverse side of Siniat Weather Defence offer the same weather resistance as the front purple face?
Siniat recommend that Weather Defence is installed the correct way round with the purple side facing outwards. Whilst the grey facia to the back uses the same nonwoven technology as the purple front, the grammage is slightly lower and therefore will not offer the same level of water and weather protection as the front.
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Can you use Siniat Universal Bonding Compound against a plastered background?
Siniat Universal Bonding Compound is not recommended to be used on a plaster background (painted or unfinished). Instead it is recommended to use the Siniat Shallow Wall Channel mechanically fixed through the plaster to the substrate behind with suitable fixings assuming the surface is plumb and true. The Shallow Wall Channel is 15mm deep which wil
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Can 3rd party collated screws be used with Siniat partitions as they are not in the Siniat range and will this effect the system warranty?
The only collated screws that Siniat currently offer are the Siniat Collated Wet Area Screws . Siniat do not supply collated screws for standard partitions. If it is desired to use a collated screw, it is acceptable to source a 3rd party fixing for installing the plasterboards to the frame as long as the following criteria are met: The chosen col
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What plasterboards should be used for framing out opening when installing dampers in partitions?
When creating an opening within a partition for a damper, the opening should be capped with the same number of layers and thickness of plasterboard as per the partition system with further consideration to the actual test data associated with the damper system. As a minimum both criteria must be met.
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What type of fixings should be used to fix Siniat Tracks on site?
When Siniat fire test a system, the track fixings are determined by selecting an appropriate type for the substrate the rig is constructed from. Siniat do not have track fixings within its range - it is the responsibility of the installing contractor to select the correct fixing to suit the substrate. It is recommended that suitable non combustible
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What is the coverage of Siniat Smartmix?
Siniat Smartmix can cover approximately 50m2 for a full taping operation or 135m2 for just a finishing coat.
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Do you have to line framed opening in the Siniat Thruwall System?
The standard recommendation is that all framed opening with-in Siniat Thruwall systems should be lined with layers of 12.5mm GTEC Weather Defence board to maintain the system performance in these locations. As ever this should be checked and confirmed with relevant window, ducting or firestopping manufacture to ensure that this lining meets their p
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What is the maximum void depth that can be achieved with a dryliner system?
There are two Dryliner Bracket components that can be used alongside the Dryliner Channel and Dryliner Track. The Siniat SR Bracket can facilitate cavity depths between 25 and 60mm. The Siniat XR Bracket can facilitate cavity depths between 25mm and 130mm.
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What is the shelf life of your Universal Bonding Compound?
Siniat Universal Bonding Compound will have the date of production printed on it and the shelf life of the product is 5 months.
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Are noggings required with a timber ceiling?
For the purpose of fixing Siniat Plasterboard direct to the underside of a timber ceiling, there are two scenarios which will dictate the need for noggings. In cold state - where the ceiling/floor element is not required to have a fire resistant period the following recommmendations can be followed: In hot state - where the ceiling is required to
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Which Insulation manufacturer should I use in Siniat systems?
Siniat do not recommend any particular provider of insulation. Where glass wool insulation is shown in the cavity of a partition for acoustic purposes only, then it is the thickness of the product that is relevant to meet the acoustic performance. Densities will vary from manufacturer to manufacturer but are typically in the 10kg/m3 to 25kg/m3 range
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Can an extra layer of plasterboard be fixed to an existing party wall to improve performance?
Fixing additional layer of plasterboard to an existing separating wall will likely yield some improved performance. However the amount of gain will be dependent on the specification of the original wall. As this is already a high performing wall (fire and acoustics) the increase in performance may not be that significant. To best advise, the specif
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When forming a door opening within a partition, should it be capped with plasterboard?
Ultimately, the requirement for the opening to be capped with plasterboard rests with the door set manufacturer. Their door set fire tests will detail how the the interface was formed and that as a minimum must be followed. From a Siniat perspective, the capping of the door opening is deemed as good practice using the same specification of boards
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What does (Rw) and (Dntw) mean when acoustic performance is mentioned?
Acoustic performance is not just a number of decibels. Depending on the terminology quoted after the dB value, the meaning will be different. dB (Rw) - this is the weighted sound reduction index derived from a lab test of a particular building element. The higher this value, the better the performance. dB (DnTw) - This is the onsite tested performa
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How should a profiled soffit be detailed to maintain performance of a partition fixed to it?
When fixing the head of a partition to a profiled rib deck, the profiles must be fire stopped to maintain the same fire resistance performance as the partition below. There are specialised products that are available from fire stopping manufacturers to suit this purpose and guidance from the relevant manufacturer must be sought to ensure they are in
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How do you fix plywood pattresses to I stud linings?
In order to install a pattress board within an I stud lining system, the Siniat Pattress Bracket for a 18mm plywood pattress or Siniat Shallow Wall Channel for 15mm pattress can be used. This is fixed to the face of the I stud and allows the pattress to be secured either side within the line of the framing - example below:
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Can I apply Siniat Drywall Sealer or Universal sealer with a spray machine?
Both the Siniat Universal Sealer and Drywall Sealer are recommended for hand application only.
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Can the Siniat Dryliner system be installed short of the soffit?
This should only be considered if there are no performance criteria for the dryliner to meet. If no performance is required from the Siniat Dryliner system then it can be stopped short of the soffit but there are a couple of points that must be carried out. The head track must still be installed over the dryliner channels and faced fixed through w
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What is the detail for forming around SVP/RWP?
RWP/SVP are often located in the corner of a wall and thus are hidden by a two sided encasement to box them in. Sometimes they are away from the corner and in such circumstances would require a 3 sided encasement to box in against a wall. In use these can generate unwanted noise so the encasement to box in should be a high level acoustic specificat
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How is glasswool insulation installed within the cavity of a partition?
Glasswool Insulation can be hung from the inside of the head track by trapping an amount with a 25mm x 25mm angle section and fixings through the head track. Where partitions, linings and shaftwall systems do not require a fire rating, and the insulation is only used for acoustic or thermal purposes, alternative suspension methods are acceptable suc
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Are there products in the Siniat range to improve mechanical key on smooth surfaces and prime high or low suction backgrounds?
No, Siniat do not have products for these applications. The substrate must be clean of all contaminants and dust free. Very low suction backgrounds may require mechanical fixing system. High suction backgrounds will require a 3rd party PVAC bonding agent. Siniat do not recommend specific brands for this. General information on the Siniat Direct Bond
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What configurations can I use Siniat Securtex in to achieve SR 1 for SBD requirements?
The following table from the Securtex brochure details the tested systems to meet SR1 of SBD. Our full Securitex brochure can be downloaded from our website (https://www.siniat.co.uk/en/performance/securtex) for all details on the concept, design considerations and comprehensive installation guidance.
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How should Siniat Bluclad board be fixed?
Siniat does not manufacture fixings for Bluclad. (click link for general information) It is recommended to use a stainless steel fixing suitable for either timber or metal SFS studs. Your preferred fixing suppliers will be able to advise you on suitable fixing for autoclaved fibre cement boards and the substrate. Boards must be fixed back to a suita
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What is the maximum door weight Siniat partition systems can support?
For single stud or twin frame partition system, the door jamb detail can be configured to support up to 100kg for a door leaf. The principle of the details are shown below: In order to support heavier door leaf weight, an square hollow section is recommended to form jamb and lintol designed and supplied by others. For a shaftwall system, the maximum
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What guidance is there for fire stopping pipe penetrations?
To suitably fire stop pipe penetrations through Siniat systems, the recommendation is that these must be in line with guidance in the latest revisions of Approved Document Part B (Section 9) of the Building Regulations and with the fire stopping manufacturers tested system. Within Approved Document B (2019 edition with amendments up to 2022), the r
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Can I use Dot and Dab system on a concrete ceiling to fix Siniat Thermal boards?
The Siniat Direct Bond Lining system is meant for wall linings only and not for use in a ceiling application. For that you should mechanical fix to a suitable framework or Siniat MF Ceiling grid.
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Why is the weight of a plasterboard different to that printed on the back of the board?
The weight shown on the back of a plasterboard is a safety guide to highlight the importance of two man lift. When manufacturing two products (same board but different length for example) due to limitations of the printing process, only the heavier weight is printed. There is no issue with the board in such cases.
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How do you finish Siniat Weather Defence board when it is used for an internal application?
Siniat Weather Defence board can be finished using the following methods: Where the need for an A1 classed plasterboard is required but not for moisture/wet applications, Weather Defence can be used and be finished with the standard Siniat Jointing compounds. Siniat Joint Filler to be used to bed and fill the joint, with the Siniat Joint Cement or S
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How to fix external insulation to Weather Defence board?
Firstly the insulation manufacturers guidance must be considered. They will have a recommended fixing pattern which must be achieved as a minimum. The type of fixing used can be advised by a fixing manufacturer and must be suitable for the insulation in question and the substrate it is fixing through to. Siniat Weather Defence board will be fixed t
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What solutions are available to provide a fire resisting ceiling to timber trusses ?
Siniat currently do not have a solution for boarding direct to timber rafters to achieve fire compartmentation. Promat have a solutions with Supalux as below: For more information on Promat solutions please contact Promat on technical@promat.co.uk
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What can be done when plasterboards are subjected to water?
It is important to store plasterboard in a manner that protects it from the environment. The installation of plasterboard should be carried out once the area is water tight so not to risk exposure to water. If plasterboards are subjected to water, the boards themselves may not necessarily show water damage straight away. Siniat suggest areas that ha
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Can Siniat boards be used in semi exposed conditions?
Bluclad is the only product within the Siniat range that can be used in permanent semi exposed conditions. This is available as board only, Siniat have no specific system data associated with it so the design team will need to ensure it is fit for purpose in the system it is to be used in. Siniat Weather Defence (used as a sheathing board to SFS) ca
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Can plasterboard be installed horizontally (long edge) as well as vertically?
From a mechanical perspective, you can install plasterboard with the long edge either horizontal or vertically. What is important is the boards are fixed to framing components at the correct centres. With systems that are required to have a fire resistance and are installed to the latest fire regulations and standards, in order to be in line with th
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Where can I find information to help create O&M manuals?
Siniat provide various information on the Website to aid the creation of a projects Operation and Maintenance manual. There are Technical datasheets, Declaration of Performance and material safety data sheets for components. There is also links to various certification for environment and sustainability, 3rd party certification, company standards a
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Does Siniat have solutions for X-Ray rooms?
Siniat do not have any specific solutions for rooms that generate X-Rays. When specifying partitions for such areas, the core wall will be designed to meet the fire resistance, acoustic, duty and height criteria. Siniat boards are not inherently capable of stopping X-Rays. Third party companies take plasterboard from various manufacturers and bond
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Can Siniat boards be used on 3 party metal framing?
Siniat will only support the build of a complete Siniat system using its full range of board, framing and accessories. Only this attracts the Siniat Warranty and support from its technical and specification departments. Siniat systems are tested with its complete range of products. It is possible to use 3rd party components but this will be at the
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What screw fixings should be used for Moisture resistant plasterboards?
Siniat supply a range of screw fixings to secure plasterboard to stud frames. High thread screws are used for fixing to a timber substrate, Self Tapping types are used where the gauge of the metal substrate is upto and including 0.7mm (Rx, B and P gauge), Self Drilling types are used for metal of 0.9mm to 3mm (W and Y gauge) Performance screws are
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Do the wind loadings stated in the Weather Defence brochure account for internal wind loadings as well as external wind loadings?
The designed for wind load is the maximum magnitude that can be withstood by the Thruwall element. The load can be positive or negative (pressure or suction). Typical design range is 1kN/m2 to 1.8kN/m2 but can be more or less. Internally, unless advised by the project design team, internal pressure is default designed to 200Pa (0.2kN/m2) which is ea
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How should Siniat Weather Defence board joints be treated when used in Thruwall systems?
There are two ways in which the board to board joints in Siniat Weather Defence can be treated as part of the Siniat Thruwall system. Which method is used is dependant on the performance the element is required to achieve. Siniat Weather Defence™ Joint Tape may be used where no fire resistance or acoustic performance is required. This is to achieve
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What Siniat components must be used in the Siniat A1 shaftwall system?
Siniat A1 shaftwall systems are designed to seamlessly interchange with the traditional Shaftwall components and construction method. The only differences include the use of A1-classified plasterboard (EN13501-1), 12.5mm Weather Defence boards to the corridor side, and 19mm Weather Defence board to the shaft side. For full details of the A1 Shaftw
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What is the maximum deflection allowance that can be incorporated within the Siniat A1 Shaftwall system?
The Siniat A1 shaftwall deflection head detail can cater for upto 40mm movement. At construction you will need to understand whether you need to allow for upward and downward movement or just downward and install accordingly, but the maximum range of movement is 40mm. The deflection head configurations are shown below: Please follow the link for f