Fitting Roof Insulation

This technique is the same for all rigid insulation such as kingsp.

Fitting roof insulation.

Achieving a u value of 0 20w m meaning your roof will be better insulated than your walls will need 120mm thickness of rigid foam or 200mm of mineral wool or natural insulation. With a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same. Isover glass mineral wool gmw is another option for the between rafter insulation as a roll or batt. Here is how we cut and fit our pir insulation to insulate the walls and roof of the house.

Alternatively using a thermal laminate featuring rigid pir insulation pre bonded to a plasterboard means fitting the insulation and ceiling lining in one operation reducing storage cutting and fixing. The materials used to insulate under the roof include batts of mineral or glass wool insulation held in place by battens of wood attached to and across the rafters alternatively polystyrene. We explain how to fit rolled insulation in a cold roof type loft including the common problems that you might encounter while getting the insulation laid. How to insulate a loft by installing loft insulation to stop the heat escaping through your roof.

It lasts for more than 40 years and should pay for itself many times over in energy bill savings as the cost of loft insulation is comparatively low. And there s even more good news. Before fitting any insulation to the sides of a pitched roof space any repairs to the roof should be completed once the insulation is in place it will be harder to spot any leaks inside the roof and any leaks will soak the insulation itself. Batts between rafters in would require adding ventilation between the insulation roof deck.

Check out our how to video at the link below. The flexible nature of gmw means that. We also help you to understand the equipment you will need and some professional tips so you. Hack n stack sealed foam board between the rafters would be better since it s at least an air impermeable insulation but even that would require a vent gap below the roof deck to meet code and you d still be under r38 on that 2x6 rafters unless you.