Fire Rated Cavity Closers

[Jammy5]

The SAP calc is asking for 63mm insulated plasterboard between garage and dwelling walls.

 

Then for the ceiling it's 200mm R40 between joists and under drawn with 63mm insulated plasterboard and a layer of fire line board.

 

[ETC]

24 minutes ago, Jammy5 said:

The SAP calc is asking for 63mm insulated plasterboard between garage and dwelling walls.

 

Then for the ceiling it's 200mm R40 between joists and under drawn with 63mm insulated plasterboard and a layer of fire line board.

 

I’m surprised that your BCO will allow you to put insulated PB to the underside of a FR floor.

[Nickfromwales]

28 minutes ago, ETC said:

I’m surprised that your BCO will allow you to put insulated PB to the underside of a FR floor.

If it's 9mm PB then yes, but if it's 12.5mm with plaster skim coat then the 30 mins regs are satisfied?

[ETC]

1 hour ago, Nickfromwales said:

If it's 9mm PB then yes, but if it's 12.5mm with plaster skim coat then the 30 mins regs are satisfied?

I’d like to see a test certificate for a 30 minute FR floor using insulated plasterboard below the floor joists.