How To Insulate A Flat Roof

An atlanta architect is looking for the best way to insulate the flat roofs he often includes in his designs for contemporary houses.

How to insulate a flat roof.

Flat roofs have been a daunting task for contractors and homeowners alike since they were invented. Insulating a flat roof presents a challenge even for experienced roofers and home builders. This may help with condensation but causes such a loss of heat that it has been banned in scotland. Why its important to insulate your flat roof.

Cold roof a very bad idea. Warm flat roof insulation. Cold flat roof insulation. Hi i have a flat roof extension built in the 1970s.

Depending on the weather and usage of the roof during its lifespan the insulation board may still be in a good enough condition to re use when the time arrives to replace the roof itself. This means there is a vapour control layer in the ceiling and cross ventilation at the eaves or the top of the walls. Flat roof insulation cross section. For today s purposes we will stick with the insulation issue.

Due to a rewire i ve had to remove parts of the plasterboard ceiling and have found that there is no insulation in the roof i can see the roof deck and joists there is no vapour layer and the plasterboard is not foil backed. Although this photo doesn t depict the house in question it illustrates some of the challenges faced by flat roofed buildings. 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. Flat roof insulation is most often carried out when some part of the roof needs to be replaced for other reasons for example when the weatherproof layer has started to leak.

However it is possible to insulate a flat roof at any time in which case it may be possible to replace the weatherproof layer at the same time to avoid problems in. There are several different methods for insulating roofs and walls alike but with a flat roof you have to worry about water getting in. Reduce extreme temperature fluctuations inside your home. A great example of this is powerdeck f insulation board which is both rot resistant and highly durable.

Is a flat roof the problem. Lots of traditional flat roofs are of the cold roof construction type. The chances of water seepage with a slanted roof are less simply because water is designed to run off and does not. This is then covered with a further weatherproofing layer.