Insulating A Concrete Slab Roof

About the only out of the ordinary thing for the framers was temporarily raising the threshold of the front entry with two 2 by layers.

Insulating a concrete slab roof. Can you give me an r value. Cold roof systems are highly inadvisable as insulation from the inside will inevitably lead to the formation of condensation. A solid slab of concrete capping the top of your house. Flat concrete roofs are generally not ventilated since the ceiling internally is generally a plaster and skim coat directly to the underside of the cold concrete.

Due to the continuous stone wool base the vapour barrier remains intact even during small structural movements. To produce a hot roof rigid insulation is fitted outside above the weatherproofing. Exact specifications vary but most concrete roofs are several inches thick. Effective roof insulation has three or four insulation layers.

For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. A concrete roof is exactly what it sounds like. 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.

The lowest insulation layer forms a uniform base for the vapour barrier. It didn t take long for the framers to build and raise the exterior walls. How much good can i get out of perlite or vermiculite concrete as an insulating material under a slab on ground for my house. As long ago as 1945 the national bureau of standards reported in its bms report 103 that the.

Cold roof a very bad idea. Of course it doesn t have to be that way if the concrete slab is insulated properly and this can be done on new builds or on existing concrete roof slabs. Creating a void between the old ceiling and new is better but ideally you need to eventually consider insulating the top of the concrete roof with solid insulation and a better. Quad deck uses unique technology to create an energy efficient and quality insulating concrete floor and roof system.

Insulating a slab on grade depends on at least four factors. The vapour barrier prevents moist air from leaking into the insulation layer. The concrete roof insulation waterproofing challenge commercial residential concrete roof slabs are not only expensive to build but they are also costly to maintain. Ideal for use in commercial and residential construction quad deck combines the strength security and reliability of reinforced concrete with the energy efficiency fast construction and comfort of insulating concrete forms.

This is then covered with a further weatherproofing layer. Placing the 4 inch concrete slab was routine and after the concrete had cured framing the exterior walls could begin.