Flat Roof Insulation Techniques

The insulation for flat roofs is commonly produced as rigid boards making them easy to handle and install with the variety of waterproofing types and systems.

Flat roof insulation techniques.

The insulation material is placed between the supporting joists leaving a gap of 50 60mm between the roof and insulation. Ordinarily polyisocyanurate pir insulation is used within warm roof construction as it has excellent dimensional stability and compressive strength which enables it to withstand foot traffic without depression. This will enable the airflow to circulate freely. Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board.

Flat roof insulation is also used with conventional bur and mechanically or adhesively attached single ply and modified bitumen membranes when field applied cover boards are used. Rigid foam panels are available in thickness. If insulation is being added to an older building then it is common practice for the ceiling itself to be taken down. From there the flat roof system you choose will determine the materials you apply.

Finally depending on the make up of your property and the access to the flat roof be prepared to factor in the cost of scaffolding. Flat roof insulation is unfaced polustyrene and is suitable for use with loosely laid single ply membranes.