Insulating Flat Roof Space

This method involves leaving a ventilation space above the insulation.

Insulating flat roof space.

Bypasses are anywhere that there is a break in the insulation. While insulation for a flat roof is expensive and can account for as much as 25 of the total installation cost there are a number of important benefits to having it in place. But going from an unheated uninsulated space to a heated insulated space might not increase the snow load much. Why its important to insulate your flat roof.

When you have an un insulated roof you have to live with rather uncomfortable room temperatures inside the home. Mineral wool rolls are ubiquitous and cheap meaning a whole roof on a standard home could be insulated to the recommended 270mm with a spend of little more than 200. Reduce extreme temperature fluctuations inside your home. This is the most common way to insulate a flat roof.

You are increasing the dead load of materials though. With flat roof insulation a vapor barrier should sit between the joists and ceiling panels and the insulation on top. This could be a hole crack or other kind of unprotected space that the insulation does not cover such as around a light fixture. It s also within the capability of most diyers although not the most pleasant of tasks.

Use rigid foam insulation panels on your flat roof before applying the final roof covering or inside the house before adding sheetrock or paneling. Insulating a roof is perhaps the easiest of all the energy saving home improvements. Insulating a roof will certainly increase the snow load if you are increasing the insulation in a heated space.