How To Insulate Dormer Roof

I have a 4 bedroom waites dormer chalet style house think of a very large bungalow with 2 bedrooms and a bathroom built into the roof.

How to insulate dormer roof.

Along both lengths of the house on either side of the upstairs bedrooms are very large eaves. This method requires the use of 150mm thick insulation between the rafters and a 50mm air gap to prevent cold bridging occurring. 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. This video shows the correct way to install a warm deck roof in a loft dormer it s a fast and highly effective method for insulating the space while allow.

With a warm roof the usual process is to split the insulation into two layers. 1 the first method is to use rigid insulation. Now to the actual question how can you insulate a dormer roof. Insulating the roof walls of a dormer chalet style house.

Place a staple every 4 to 6 inches along each wall stud. This method requires the use of 150mm thick insulation between the rafters and a 50mm air gap to prevent cold bridging occurring. Hold the cut insulation against the dormer walls with the paper side facing the attic or room and the fibreglass facing the exterior wall. Given below are 3 of the most popular methods by which you can insulate your dormer roof and the best way to tackle this task to achieve the desired results.

To insulate an existing dormer we outline three of the more common methods below. If 180mm is to be installed then 100mm board might be introduced between the rafters there has to be a minimum 25mm air gap between the insulation and the underside of the tiles or slates with an 80mm board running across the rafters. The rigid insulation method requires the utilisation of 150mm thick insulation in between the rafters along with a 50mm air gap in order to avert cold bridging. Secure the flaps on the sides of the batt insulation to the dormer wall studs with an insulation stapler.