Insulated Concrete Floor Slab Detail

Both codes state slab edge insulation is not required in jurisdictions designated by the building official as having a very heavy termite infestation.

Insulated concrete floor slab detail.

Check out this article for a list of slab edge insulation solutions and episode 125 for my interview with henry edney of maxraft. Insulation requirements for slab on grade floors can be found in section r402 2 9 of the 2012 iecc and section n1102 2 9 of the 2012 irc. The slab on grade design calls for double stud walls insulated with dense packed cellulose what roche believes is the most economical and practical approach for getting the walls to r 40 or beyond. The f factors for slab on grade floors are defined in standard 90 1.

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. Insulation below the slab suits continuous low level heating gradually warming the thermal mass of the concrete and sustaining it at a consistent temperature. Up to 80 of heat loss in a floor slab occurs around the edges. Ground bearing floors shall be of adequate strength and durability and use concrete mixed and reinforced as necessary to support floor loads safely and resist chemical and frost action.

The target u value for a concrete ground floor slab is 0 22 and these days the insulation must be provided around the edge of the floor slab as well. In this section several typical slab on grade sections are illustrated and described. Roche has paused at an important detail. Figures 4 12 through 4 14 show variations where the slab is the primary location for insulation.

The first thing to consider when looking into different types of concrete floors is why it s so important to insulate the floor slab. Where the heating is likely to be turned on and off such as in new build domestic properties and a faster thermal response is required the floating floor arrangement of. 2015 iecc irc section r402 2 10 n1102 2 10 slab on grade floors. The layer of rigid foam insulation that separates the concrete foundation wall on the outside from the.

Slab on grade floors with a floor surface less than 12 inches below grade should be insulated in accordance with information provided in the insulation and fenestration requirements by component table which is reproduced following this paragraph. 4 2 slab on grade construction details. These f factors are acceptable for all slab on grade floors but you need to make sure. Consult appendix a table a6 3 1 in the 2016 edition for a tabulation of assembly f factors for slab on grade floors based on the arrangement and rated r value of the applied insulation.