Insulating Flat Roof Dormer

To produce a hot roof rigid insulation is fitted outside above the weatherproofing.

Insulating flat roof dormer. They lose loads of heat and are prone to leaking causing the materials to deteriorate. Dormer bungalows also known as dutch bungalows were built quite widely in the uk. Flat roof dormer the traditional cold deck flat roof system is to install the insulation between and under the joists with ventilation below the timber deck. 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.

Warm deck flat roof insulation is now the standard way to insulate a flat roof click to enlarge flat roofs for example on extensions bathrooms and dormer windows are not the best of ideas. Dormer roofs are roofs that contain rooms and can present considerable challenges when it comes to insulation. These rooms are very cold the walls are just boarded. Tlx silver can be used to reduce the thickness of additional insulation required between the joists to help ensure a ventilated gap is maintained between the insulation and the deck.

Cold roof a very bad idea. This is then covered with a further weatherproofing layer. In this video i look at how this has happened and the way to resolve t. Out of all the above mentioned common methods of insulating dormer roofs the most dependable and preferred is spray foam insulation for the following reasons.

Why spray foam does it better. I ve never seen so much black mould and condensation and moisture in a new flat roof. Spray foam insulation is capable of reaching places in the dormer roof that other methods of insulation cannot. How to insulate a dormer roof when making for changes to a dwelling or when constructing a new dwelling it must comply with the current building regulations when altering the insulation in a dormer part l of the building regulations must be adhered to.