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Concrete Slab Insulation
Ultra C B F

               Primary Uses
                  Under Concrete Insulation
              Use with or without Radiant Slab Heating

                 Advantages

                      Creates an ideal under concrete insulation
                  Is a 100% Vapor and Radon Barrier
                  Easy to install
                  Easy to clean or wash down
                  Not affected by moisture or humidity
                  Does not promote the growth of Fungus, Bacteria or Rodents                                                                                                       20 Year Manufacturer Warranty       

R-3.8 Engineering Calculation ASTM 236 ( Modified )
Decreases Slab Heat Loss by Over 70 %

Photo's of C B F in use


 

                   ULTRA CBF used in I C F CONSTRUCTION

            

Q & A

Q: How is CBF an effective insulation under concrete?

A: In order for reflective insulation to perform effectively there must be an airspace on at least one side of the foil. This is why CBF has the foil sandwiched between two layers of polyethylene bubbles; the bubbles provide the foil with 3/16" airspace on both sides, thus allowing the 99.9% pure aluminum foil to reflect the radiant heat waves in the desired direction.
Q: How much of the heat loss in a Radiant Heated Slab is Radiant?
A: Increases in temperature differences (Delta T) will increase the radiant component of heat loss. As the slab increases in temperature so will the amount of radiant heat emitted by the slab. CBF provides an airspace on both sides of the foil, allowing it to reflect 57% of the radiant heat waves and will reduce heat loss by 85%.

Q: Will the bubbles burst from the pressure of the concrete?

A: CBF was tested using the ASTM 1621-94 Compression Test Method. CBF tested at over 140psi with no bursting of the bubbles.  The amount of pressure under a four-inch slab of concrete is less than one pound per square inch. The deflection of CBF with a load of one pound per square inch was less then 10%.

 Q: What is the R-Value of CBF ?

A: R-Values are a measure of thermal resistance to heat transfer caused mainly by conduction and convection, but do not fully measure a product's ability to reflect radiant heat energy. Using the ASTM C236 (modified) Test Method in a vertical position CBF was measured as an R-4.  R-Values however do not take into account the full reflective value of CBF.  CBF has been tested and proven to reflect 57% of the radiant heat waves using the ASTM C518 Standard Emissivity Standard Test Method. 

Q: Is CBF a vapor barrier?

A: CBF does not only have a high insulation value, but it is also an excellent vapor, radon and methane barrier. Unlike foam board insulation CBF does not require an additional vapor barrier.  CBF was tested using ASTM E 96-93, Standard Test Method for Water Vapor Transmission.  The results of the test revealed that the CBF exhibited a high level of vapor resistance with a perm rating of <0.02.

Q: Does the concrete deteriorate CBF ?

A: NO. The aluminum foil in CBF is sandwiched between two layers of polyethylene bubbles, which protects the foil from the chemicals in the concrete and from any lime or other contaminants that may come in contact with the CBF from the soil.  The bubbles protecting the foil and providing airspace are comprised of linear low-density polyethylene material. Low-density polyethylene has a high environmental stress resistance. The chemicals in concrete and the soil will not deteriorate the polyethylene bubbles due to the strong physical properties of the material.
Testing of Ultra CBF
Test Name Result  /  Mfg. specs revised / published 03/12
Water Vapor Permeance < 0.02 perms - CBF is a water vapor barrier (ASTM E 96-95)
Compression Strength
 140psi (ASTM D751)
Methane ,Vapor
& Radiant barrier
 CBF is a methane, vapor and radiant barrier all in one
Thermal Reflectivity

Thermal Resistance
ASTM C236*
 57%

R-3.8*
Modified to demonstrate the radiation effect of reflective foil on reducing the energy input at the room side of the Guarded Hot Box
Fungal & Bacteria Resistance Did not promote growth (ASTM C1338-00)
Tensile Strength & Elongation 3.81N/mm (ASTM D828)
Fire Rating
 Class 1 Class A  (ASTM E84-09)
Weight 1.35oz/sq. ft. (ASTM D 751 p.10)
Thickness 5/16" (ASTM D751 p.9)
Bursting Strength 180psi (ASTM D751 p.18.3)
Flexibility/Pliability Passed (TAPPI T512) No cracking or Delamination
Temperature Range
 -50 0F to 180 0F  (ASTM C411)


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