Internal insulation (commonly referred to as 'dry-lining walls') involves fixing insulation to the inner surfaces of your external walls and covering it with a vapour barrier layer and plasterboard or, alternatively, composite boards of plasterboard backed with insulation and incorporating a vapour barrier.
Types of insulation material used include expanded polystyrene, fibreglass and polyurethane boards. Polyurethane tends to be more expensive, but its thermal performance is better than polystyrene or fibreglass, so a 25 mm (1 inch) thickness of polyurethane will have roughly the same insulating performance as a 38 mm (1.5 inch) thickness of polystyrene.
Condensation that may occur on the walls is prevented by installing a vapour barrier on the warm i.e. room side of the insulation. Composite boards for internal insulation generally incorporate a vapour barrier. It is important that the vapour barrier be well sealed at wall, floor, ceiling, door and window junctions, around light switches and at all other breaks in the insulation.
Due to the evolving Covid 19 situation, our team from Warm wrap homes fully understand that our customers may not require face to face call outs to their properties for surveys and evaluations. We are very much open for business so call or email with queries, or just a chat regarding your insulation needs and we will be delighted to help and set up an appointment with you in the coming weeks. Stay Safe and stay well.