ceiling advice

Legacy_user

We have to take down and replace our kitchen ceiling , are there any build regs when we replace it as we have been lookingat alternatives ie plastic/wood cladding .

System

Anyone got any input?

evilgoose

Give your building regs department a ring and ask for advice.
For my own safety I think about putting up fire resistant plasterboard and then put your cladding onto that.

Furts

Hi CHRISSYG

Your ceiling must give fire protection to the floor or roof timbers above. In normal domestic situations 12.5 mm plasterboard is OK. If it is a timber ceiling it is not an exact science, but at least 25mm depth should be sought.

Current good practice is to sound insulate, say 15mm dense plasterboard with a fibreglass/Rockwool approx 50-60mm quilt in the floor space. (But it can be cheaper to fit loft insulation instead). There is a requirement of a minimum 10kg per metre squared density - so check out the various products. Do not clog/overheat any traditional downlights - these should have hoods and venting - an electrician's advice would be more help on this. Modern LED lights are a different matter

The surface must resist the spread of flame, so no polystyrene, plastic etc, If it is a timber ceiling, no varnishes can be used unless a special fire resistant type.

I trust this helps.

tony6403

Furts wrote: »

Hi CHRISSYG

Your ceiling must give fire protection to the floor or roof timbers above. In normal domestic situations 12.5 mm plasterboard is OK. If it is a timber ceiling it is not an exact science, but at least 25mm depth should be sought.

Current good practice is to sound insulate, say 15mm dense plasterboard with a fibreglass/Rockwool approx 50-60mm quilt in the floor space. (But it can be cheaper to fit loft insulation instead). There is a requirement of a minimum 10kg per metre squared density - so check out the various products. Do not clog/overheat any traditional downlights - these should have hoods and venting - an electrician's advice would be more help on this. Modern LED lights are a different matter

I trust this helps.

12.5 mm plasterboard such as Gyproc Fireline gives 30 minutes fire protection. Never seen 25mm used. The building inspector was perfectly happy with 12.5mm on our last extension.
Also , I have recently boarded out two timber kitchen ceilings - both beneath bathrooms , which because of drainage siting is where they tend to be - so why would sound insulation be good practice?

southcoastrgi

CHRISSYG wrote: »

Anyone got any input?

yes it will look b1oody horrible

Furts

tony6403 wrote: »

12.5 mm plasterboard such as Gyproc Fireline gives 30 minutes fire protection. Never seen 25mm used. The building inspector was perfectly happy with 12.5mm on our last extension.
Also , I have recently boarded out two timber kitchen ceilings - both beneath bathrooms , which because of drainage siting is where they tend to be - so why would sound insulation be good practice?

Hi tony 6403
The 25mm was reference to timber thickness. Sound insulation - some people have a bedroom above their kitchen. Also, it deadens the sound of the toilet etc - unless you are not concerned. Still good practice though.