How To Insulate A Concrete Roof Slab

Check out this article for a list of slab edge insulation solutions and episode 125 for my interview with henry edney of maxraft.

How to insulate a concrete roof slab.

Follow label directions and allow it to dry thoroughly. Ventilated roof solution paroc air is a simple and safe solution for making dry flat roofs. Concrete is cold and hard but an insulated concrete slab can make a heated garage significantly warmer and more energy efficient. Paroc air keeps the roof structure dry without any mechanical systems.

Up to 80 of heat loss in a floor slab occurs around the edges. Building another sloped tiled roof over current flat concrete roof supported by metal. This layer of roof tiles is fragile inherently and roof cannot be used for walking etc. The concrete deck can offer greater speed of roof construction which is an important consideration on many larger commercial projects.

To insulate a flat roof with a concrete deck we recommend a warm deck construction method where the vapour control layer is sandwiched between the concrete deck and a layer of rigid pir insulation boards. The climate the type of foundation whether the slab includes hydronic tubing for radiant heat and the severity of the local termite problem. Martin holladay explains insulating a slab on grade in the energy smart details department. Insulating a slab on grade depends on at least four factors.

3 clean the surface of the slab thoroughly then apply a coating of asphalt primer to help the asphalt cement bond. 4 where rainfall can be heavy use a fine tooth trowel to apply cold cut back asphalt mastic over the entire slab use about one gallon per 100 square feet of floor. The best way to insulate a slab is to isolate it from the ground.