Insulating Slabs - Why Reflective Foil Insulation is the Best Under-Concrete Product to Use

Published: 12th April 2011
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Compared to new business products, today's insulation practices are largely inefficient. As these dogmatic methods give way to new techniques and materials, a specific product has become the preferred choice in under concrete slab applications.

Ultra Concrete Barrier Foil or Ultra CBF is a reflective foil insulation product designed specifically for under poured concrete slabs. Ultra CBF's patented bubble/foil/bubble layering system ensures that none of the reflective foil is in direct contact with the curing concrete. The foil is in the middle of the product keeping a small airspace between the outside layers of bubbles. This is different than standard reflective foil insulation where the product design is foil/bubble/foil.


Ultra CBF reflective foil insulation serves three major purposes in under concrete slab use.


1.      Insulates and slows slab to earth (conductive and radiant) heat loss.

2.      Creates a vapor barrier.

3.      Creates a radon barrier.


Today's under-slab insulation should also meet these requirements. It does, but relies on two items. Generally two inch foam insulation boards and clear plastic sheets are used together.


Ultra Concrete Barrier Foil does the same job of the plastic sheets (vapor and radon barrier) and the two inch foam boards (insulation) in one product that is only ¼" thick. Ultra CBF is flexible and can easily be unrolled and cut. It is much easier to ship and transport and generally costs less per square foot than using foam boards and plastic. In addition Ultra CBF is a reflective foil radiant barrier insulation product that reflects radiant heat.


As concrete slab insulation material costs and consumer expectations continue to rise insulating with Ultra CBF in under concrete slab applications is the most efficient choice.


1.      Costs less per square foot.

2.      Installs easier, especially on rough grade

3.      Easier to handle.

4.      Easier to cut, especially around plumbing and other piping.

5.      Easier to walk on, superior bubble strength withstands jobsite traffic.

6.      Does not break or crack

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