How To Insulate A Concrete Roof Slab

The climate the type of foundation whether the slab includes hydronic tubing for radiant heat and the severity of the local termite problem.

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. Ventilated roof solution paroc air is a simple and safe solution for making dry flat roofs. The best way to insulate a slab is to isolate it from the ground. Martin holladay explains insulating a slab on grade in the energy smart details department.

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 basis for this simple but effective solution is natural air pressure. Building another sloped tiled roof over current flat concrete roof supported by metal. Up to 80 of heat loss in a floor slab occurs around the edges.

Adding a layer of roof tiles placed directly on floor of roof which allow air to circulate under and over but keep convectional heating of the roof slab to a minimum. Concrete is cold and hard but an insulated concrete slab can make a heated garage significantly warmer and more energy efficient. 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. Follow label directions and allow it to dry thoroughly.

The concrete deck can offer greater speed of roof construction which is an important consideration on many larger commercial projects. 3 clean the surface of the slab thoroughly then apply a coating of asphalt primer to help the asphalt cement bond. Insulating a slab on grade depends on at least four factors.