What extensions can I make to a fire rated partition?
You may want to extend a tested fire performing partition build-up.
The following rules have been taken from the Extended field of application standard EN 15254-1: Lightweight Partitions.
Framing
| Allowed | Not Allowed |
| Increase stud gauge | Decrease stud gauge |
| Decrease stud spacing | Increase stud spacing |
| Increase stud depth | Decrease stud depth |
| Increase stud width | Decrease stud width |
| Change shape of the stud profile |
Boarding
| Allowed | Not Allowed |
| Increase thickness of board | Swap boards |
| Increase the number of board layers | Decrease the number of board layers |
| Increase the number of board layers while decreasing the thickness of board as long as the total lining thickness is more than that tested | Swap board layers |
| Decrease board size (not thickness) | Change the orientation of the boards |
Insulation
| Allowed | Not Allowed |
| Increase thickness of insulation | Add insulation to a non-insulated system |
| Swap glass mineral wool for stone wool insulation | Remove insulation from an insulated system |
| Increase density of insulation | Swap stone wool for glass mineral wool |
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