Insulating Concrete Slab Roof

In cold climates climate zones 4 and higher it s important to install vertical insulation on the interior side of the stemwall all the way down to the footing.

Insulating concrete slab roof.

Insulating concrete with galvanized steel centering this system provides a maintenance free economical roof system. One solution would have been installing rigid insulation under the slab turning it up on the perimeter to form a giant pan and then casting the concrete slab inside the pan. Using the correct insulation and correct detailing thickness is the only way of guaranteeing zero condensation. The lwic systems are composed of either aggregate or cellular concrete.

Lightweight insulated concrete also known as lwic is a material intended for use as an insulation and substrate for support and attachment of roofing membranes on slope roofs. Siplast lightweight insulating concrete is available in four mix designs. 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 covering grp or epdm. To install such a roof a crew first builds a framework for the intended roof.

The r value of the insulating concrete depends on its unit weight and thickness. Department of energy in december 1977 that insulation be installed only at the perimeter of the slab if however you are building a floor that will contain radiant heating pipes it would be justifiable to install an insulating concrete below it. Many builders bevel the top of the vertical insulation so that none of the rigid foam is visible after the concrete slab is placed. Zic nvs insulcel and zonocel.

Perimeter slab insulation heat loss through an insulated slab windows 33 roof ceiling 8 slab 15 6 doors 5 walls 39 insulation and fenestration criteria table 402 1 1 insulation and fenestration requirements by componenta climate zone fenestration u factorb skylightb u factor glazed fenestrationb e shgc ceiling r value wood frame wall r value. A second solution would have been placing the slab and then building a sleeper system on top of it to support the floor. For this reason it is normally recommended see model code for energy conservation published by the u s. It consists of high tensile galvanized steel centering welded or attached with self tapping screws to the supporting steel framing together with either a 1 6 or 1 8 mix of vermiculite concrete.

The four designs represent a range of compressive and tensile strengths allowing a choice of system based on substrate and specific project circumstances. While flat roofs are the easiest to create out of concrete complex sloping roofs are also possible. Each design encapsulates the insulation board in insulating concrete. 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.