Specifications
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What is SilverBack®?
SilverBack® is a four-layered silver and white reinforced crawl space liner. The outer layers consist of a high-strength polyethylene film containing UV and thermal stabilizers to enhance its durability. Each individual layer of the SilverBack® crawl space liner is laminated together with molten polyethylene to prevent de-lamination.
The Difference in Design
The SilverBack® crawl space liner comes in two different forms, String Reinforced (SR) and High Strength (HS). Both are made with pure polyethylene and contain no unnecessary additives. Both of these crawl space liners are offered in 12 Mil and 20 Mil thicknesses. The SilverBack® crawl space liner has a glossy white facing and a silver back.
String Reinforced SilverBack® SR crawl space liner is reinforced with a polyester cord. This reinforcement cord is molten in place with a layer of pure polyethylene. This reinforcement layer gives the SilverBack® a diamond shaped pattern. This unique process makes this crawl space liner extremely tear resistant, waterproof, and incredibly dependable.
The High Strength SilverBack® HS crawl space liner is designed with pure polyethylene ribbons that are cross-woven. This features gives the liner added strength. And this crawl space liner is seamless with no welds or panels. In addition, 100% of the surface area is protected by reinforcements made from strengthened polyethylene. The HS has an even greater tear and puncture strength than the string reinforced option.
AVAILABLE SIZES
| 20 Mil String Reinforcement | 20 Mil High Strength |
|---|---|
| 13’4” X 50’ – 675 sq ft | 46” X 85’ – 325 sq ft |
| 6’9” X 100’ – 675 sq ft | 93” X 85’ – 658 sq ft (Not folded) |
| 13’4” X 75’ – 1000 sq ft | 12’ X 85’ – 1020 sq ft |
20 mil Silverback® HS Specs
20 mil Silverback® SR Specs
Below is a comparison between the 20 Mil String Reinforced and 20 Mil High Strength SilverBack® crawl space liner.
| SR vs. HS |
 |
 |
|---|---|---|
| SILVERBACK® SR | SILVERBACK® HS | |
| Pick Count (per inch) | N/A | 16 x 16 |
| Weight oz/yd2 | 15.52 | 11.03 |
| Weight gsm | 526 | 374 |
| Breaking Strength warp lb/in | 34.4 | 177.0 |
| Breaking Strength fill lb/in | 52.1 | 309.0 |
| Breaking Strength warp lbf (D7003)* | 73.0 | N/A |
| Breaking Strength fill lbf (D7003)* | 70.6 | N/A |
| Grab Strength warp lb (D7004)* | 140.1 | 287.0 |
| Grab Strength fill lb (D7004)* | 129.5 | 437.0 |
| Grab Strength warp lb | 131.3 | 84.0 |
| Grab Strength fill lb | 168.2 | 141.0 |
| Trapezoidal warp lb | 90.4 | 70.0 |
| Trapezoidal fill lb | 95.5 | 95.0 |
| Tongue Tear warp lb | 40.4 | 600 |
| Tongue Tear fill lb | 30.9 | 26.2 |
| Mullen psi | 162 | 597 |
| Thickness mil | 23.4 | 151 |
| Hydrostatic Resistance psi | 164 | 1.53 |
| Puncture Resistance lbf | 62.3 | N/A |
| Adhesive Peel Strength lbf | 3.27 | N/A |
| Characteristics |
Silver/White String-Reinforced |
Silver/White High Strength |
|
* Testing conducted on the bias There was no difference in hydrostatic resistance between the silver coating and white coating. Samples for breaking strength and tongue tear testing did not break even when they were streched to maximum frame height in Instron. |
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