Insul-Tarp Technical Product Information
Insul-Tarp® Insulation Materials and Construction
Insul-Tarp in-slab insulation is constructed of features a unique construction that includes
the following top-quality materials:
- ● Cross-woven polyethylene for rugged durability
- ● High density closed-cell foam
- ● High density polyethylene bubble
- ● Two layers of reflective aluminum
Physical Properties of Insul-Tarp Ground Insulation
|Average Thermal Resistance||ASTM C 518||R - 7.5|
| Tensile Strength and Elongation*
||ASTM D 412||136 PSI|
|Tensile Strength**||ASTM D 751||45lbs-f/in.|
|Compression Set||ASTM D 3575||4.3 %|
|Bursting Strength*||ASTM D 751-73||90 PSI|
|Maximum Use Temperature||180° F|
|Minimum Use Temperature||-60° F|
|Water Vapor Permeance||ASTM E 96||.002 Perms|
* Denotes testing on bubble pack only
** Denotes testing on cross woven polyethylene only
Tested R Value (R-7.5)
Insul-Tarp was tested in accordance with ASTM C 518, Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus. See the Non-Radiant Testing PDF in the table below for a detailed summary of the testing procedure and results.
Performance Equivalent: R-10 (Under Radiant Heating Systems)
When calculating heat loads for radiant heating systems, a performance equivalent of R-10 can be used. Although this is not a tested R-value, field and laboratory tests support this number as a reasonable gauge for measuring performance. The Lab Test 1 and Lab Test 2 PDFs in the table below illustrate Insul-Tarp's radiant heating performance.
Insul-Tarp Specifications and Test Result Documentation
» Non-Radiant Testing
» Insul-Tarp Installation Guide
» Insul-Tarp Product Specifications
» Insul-Tarp Test Data Sheet
|» Insul-Tarp Lab Test 1|
|» Insul-Tarp Lab Test 2|
Click here to Download Adobe Reader.
- Under-slab Insulation
Insul-Tarp under slab insulation is the easiest ground insulation to install and the most effective. The picture above shows Insul-Tarp in-slab insulation installed under radiant floor heating cable attached to wire mesh.
"The absolutely incredible thing about Insul-Tarp was the performance during heat up times of the slab. Projects done with 2-inch polystyrene seem to take up to 30 percent longer to get up to temperature.This product works better than any other product we have tried.
– Michael W., Hi Valley Supply
"When compared to the cost of styrofoam and the cost of installing and cutting styrofoam, it is much more cost efficient to use Insul-Tarp."
– Carlo S., United Plumbing