Finnforest UK

FIRE RESISTANCE

30 MINUTE

        Finnjoist (FJI)
____________________________________________________

Floor Decking                 18mm thick OSB or ply decking

                                       21mm thick softwood
                                         tongue & groove floorboards

                                       22mm flooring grade chipboard
____________________________________________________ 

Ceiling Linings
Nail or screw fixed to        15mm gypsum plasterboard -
Finnjoist (FJI) at 150mm      BS1230: Part 1: 1985: Type 1
minimum centres. 
Board edge noggins         12.5mm gypsum plasterboard -
may be required.                BS1230: Part 1: 1985: Type 1,       
Ceiling lining                      with 5mm plaster skim coat
manufacturer should be
consulted for                    12.5mm British Gypsum Fireline
installation details.              board        

                                      12.5mm Knauf Diamond Fire
                                         Resisting Diamond board
____________________________________________________

Downlighters                Type CESCO PTR80 DWH
                                     Maximum diameter - 80mm
                                     Maximum density - 1 per 1.2m²

 Based on Warrington Fire Research Centre Reports: 
 Number C117645, and Chiltern International Fire
Report RF00025.

        Finnjoist (FJI)
____________________________________________________

Floor Decking                 18mm thick OSB or ply decking

                                       21mm thick softwood
                                         tongue & groove floorboards

                                       22mm flooring grade chipboard
____________________________________________________ 

Ceiling Linings
Nail or screw fixed to        2 no. layers of 15mm plasterboard -
Finnjoist (FJI) at 150mm      BS1230: Part 1: 1985: Type 1
minimum centres. 
Board edge noggins         2 no. layers of 12.5m
may be required.                British Gypsum Fireline board       
Ceiling lining                     
manufacturer should be    1 no. layer of 19mm Gyproc Plank
consulted for                     + 1 no. layer of 12.5mm
installation details.              British Gypsum Wallboard       

                                      1 no. layer of 12.5mm Knauf
                                         Diamond Fire Resistant Wallboard
                                         (Type 5) + 1 layer of 12.5mm
                                         Knauf Diamond Wallboard (Type 1)

 Based on Warrington Fire Research Centre Reports:
 Number C118649 and WARRES No. 117647.