Edward Thompson

Sun 10 Aug 2014 06:34am

Hi Peter on most loft conversions the new floor is independent to the existing ceiling to help with sound transfer and avoid cracks in the existing ceilings. Insulating the existing ceiling and between the new floor joists should be enough, the acoustic chipboard will help with sound deadening as it just sits on the joists rather than being fixed down but is generally used where you have got multiple occupants in the building and noise would be more of an issue. Carpeting the new floor would also help with sound transfer. Follow manufacturers instructions when installing insulation/flooring. Please note if you are doing the job yourself you cannot form a floor on the existing ceiling joists, they are not strong enough you will have to install rsj's. Hope this helps. Ed

(1) Was this helpful?

Jeff Adams

Tue 12 Aug 2014 11:04pm

Hi Peter I would strongly suggest you refer to the planning officer and surveyor for advice. I assume you have planning permission and plans which would have been passed. if in doubt refer to the building inspector

Was this helpful?