Residential Flat Roof Insulation

Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules.

Residential flat roof insulation.

Since your attic is insulated i would advise at least 2 of polyiso insulation in the roof for good measure. Thermafiber residential mineral wool blankets are ideal for insulating walls floor ceilings and attic spaces in homes. To achieve this add 100 to 160mm of insulation above the structural deck dependant upon insulant conductivity. The target should be to achieve a u value of 0 25w m2k or better.

From there the flat roof system you choose will determine the materials you apply. Products are also inorganic non combustible and mold resistant. As for insulation thickness it depends on how much you can afford. This system was often used in the past but is not recommended nowadays.

These products provide a high r value inch excellent sound attenuation characteristics and outstanding fire performance. The type that is right for your flat roof insulation job depends upon the state of the roof expert opinion on the best type and your budget. Different types of roofing insulation exist including blanket insulation blown insulation and rigid insulation. In fact it may cause damage in the long term.

Can a flat roof be insulated from inside from the ceiling of the area below. The typical u value of an existing uninsulated flat roof is 1 5w m2k. Rockwool stone wool roof insulation combines the thermal performance dimensional stability impact resistance and acoustic control required to increase the performance of many flat roof assemblies. It s what s called the cold roof principle.

Pros and cons for flat roof materials all three types of flat roofing cost 250 to 350 per square 100 square feet but prices vary according to region and size of the roof. Insulating a roof from inside is technically feasible. That accounts for its materials membrane insulation and decking as well as snow and rainfall and even for equipment like an air conditioner. Recommended roof insulation r value is 38 r but ideal is to have 50 r or more.

Better to have 3 or more.