SPECIFICATIONS

SPECIFICATIONS

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™ String Reinforced Vapor Barrier
SilverBack™ High Strength Vapor Barrier

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

AVAILABLE SIZES

12 & 20 Mil String Reinforcement

13’4” X 50’ – 675 sq ft

6’9” X 100’ – 675 sq ft

13’4” X 75’ – 1000 sq ft

12 & 20 Mil High Strength

46” X 85’ – 325 sq ft 

93” X 85’ – 658 sq ft (Not folded)

12’ X 85’ – 1020 sq ft

Silverback™ String Reinforced Vapor Barrier Specs
Silverback™ High Strength Vapor Barrier Specs

* 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.

* 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.