Fire
Fire Resistance and Reaction to Fire.
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What fire rating does Siniat Fire Board give?
A plasterboard product on its own does not provide a fire resistance rating. Fire resistance refers to how a complete construction (such as a wall, lining, ceiling, or floor/ceiling build‑up) performs in a fire test, including its ability to resist collapse, prevent fire spread, or limit heat transfer. This performance depends entirely on the full t
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What do I need to do to achieve fire protection to structural steel?
Siniat encasement systems have been discontinued effective from 29/03/26. We do offer solutions for fire‑protecting structural steel beams and columns through the Promat product range. To specify an appropriate system, three key pieces of information are required: The required fire protection period (e.g. 30, 60, 90, 120 minutes). The steel section
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Can Weather Defence™ be used for steel encasements?
Weather DefenceTM is designed and tested as an external sheathing board for use within Siniat façade and Thruwall systems. It's intended application is as a sheathing board that provides temporary weather protection during construction, allowing internal works to progress while the external wall is still in progress. Although Weather Defence™ is c
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How Do Siniat Fire Test Systems?
Test → Extend → Classify: Siniat’s Evidence Chain To ensure products are safe, compliant, and aligned with UK regulatory expectations, Siniat follows a rigorous Test → Extend → Classify process. All fire‑resistant systems are tested as complete assemblies through UKAS‑accredited laboratories, and classification follows strict EN standard requirement
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What permittable changes can I make to a fire resistant partition under EXAP?
Fire resistance performance applies only to the specific partition configuration that has been tested. Changes to the construction can invalidate the performance unless those changes are clearly permitted by the extended field of application rules. This guidance is based on BS EN 15254‑3: ‘Extended application of results from fire resistance tests f
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Should I design to BS or EN Standards?
Designing to EN Standards (Recommended Approach) EN standards provide a structured and transparent framework for demonstrating fire performance. This includes: Clearly defined test methodologies Standardised classification systems (EN 13501) Consistent reporting across test laboratories Defined rules for permitted variations through:- Direct Field
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Why is there a shift from BS to EN fire testing standards?
Why the Shift? The shift from British Standards (BS) to European (EN) fire‑testing standards is driven by modernised test methodologies, stronger evidence requirements, and closer regulatory alignment. EN standards provide clearer, more robust performance data and a consistently applied classification framework, supporting the principles of the Gold
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How do I read the new partition system names?
Partition code structure In order to understand the build-up of the system just from the name, the code is split into sections (indicated with ‘-’) FRAMING- BOARDING - INSULATION Framing Boarding Insulation Frame Type No. Layers No. Layers Stud Profile Thickness Thickness Stud Width Name Type Stud Gauge Asymmetric Stud Centres Accessories
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Are Siniat sealants compatible with cPVC Pipes?
Sealants and cPVC pipework compatibility Siniat Intumescent Acoustic Sealant is not suitable for use with cPVC pipework and must not be used for this application. Incorrect product selection in these situations can lead to compatibility issues and may compromise the performance and durability of both the pipework and the fire‑stopping system. Please
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What is the coverage of your Siniat branded sealants?
Understanding sealant coverage is essential when planning works, ordering materials, and ensuring continuity of fire and acoustic performance across wall and floor constructions. Below is a guide to the typical coverage and key characteristics of Siniat branded sealants based on Siniat product information and technical data. Siniat Fire Rated Silico
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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 guidance is to avoid installing back‑to‑back sockets where possible. Ideally, sockets should be located in separate stud bays, ensuring a natural stagger between socket penetrations on each side of the partition and helping to maintain the integrity of the construction. Where the use of separate stud bays cannot be achieved, back‑t
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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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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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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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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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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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What is the reaction to fire classification of Siniat Joint Tape?
Siniat Joint Tape in isolation has a reaction to fire Euroclass of F to EN 13501-1. However when used as part of a full Siniat Jointing system with Siniat joint compounds, the reaction to fire Euroclass is A2-s1,d0 in line with BS EN 13963:2014 Annex B.
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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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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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Can partition plasterboard be installed vertically or horizontally?
Plasterboard within internal partitions can be installed both vertically and horizontally in principle. However, where a partition is designed to achieve a fire‑resistance classification, the orientation of the boards must follow the tested and classified Siniat partition system. If the board orientation differs from that used in the tested partit
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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