Synthetic Roofing Underlayments

VB Synthetics

Synthetic Roofing Underlayments

VB Synthetics is a premier manufacturer of synthetic underlayment(s) for use under all types of roofing ranging from sloped to metal roofing. VB Synthetics is passionate about all aspects of Building Envelope, and we continue to develop innovative products.

VB Synthetics Products –

Product Name Underlayment Thickness (mil)
VB Defender 6.5 Mil
VB Shield 7 Mil
VB Armor 11 Mil
VB Extreme SA (self-adhesive) 48 Mil

VB Synthetics - 50 years warranty SLIPGUARD is a front and back enhanced slip-resistant walking surface. All of VB Synthetics underlayments, come with our 50-year premium warranty and are manufactured with the cutting edge SLIPGUARD resistant feature.

VB Synthetics underlayment products are completely inert to mold growth for up to 6 months and do not expand or contract as they lay flat without buckling.

Does your roofing project demand a safe and comfortable walking surface? Are you looking for a product that exceeds 30lb felt? If the answer is yes, we offer VB Armor, our premium grade roof underlayment.

VB Synthetics provides premium roof underlayment available nationwide. Our new addition, “VB Extreme SA” is now available nationwide! VB Extreme SA, is the next generation self-adhered backing.

All VB Synthetics underlayment’s meet or exceed ASTM D 4869, ASTM D 226, ICC-ES AC188, ICC-ES AC188, FBC (HVHZ) TAS 103, Miami-Dade 2014 FBC, Texas Department of Insurance.

Contact Us
VB Synthetics
VB Synthetics
VB Synthetics

OUR PRODUCTS

FIGHT THE ELEMENTS WITH OUR ALL WEATHER DEFENSE SYSTEMS

VB Defender

VB Defender (un-rolled)
VB Defender (rolled)

Quality roofing underlayment is critical for helping to prevent wind-driven rain from infiltrating under the roof’s shingles and potentially damaging the home’s structure and interior. Traditional asphalt felt underlayment’s tear easily and absorb moisture, leading to wrinkling that telegraphs through the shingles. Competitively priced with typical #15 and #30 asphalt felts, VB Synthetics, VB DEFENDER Synthetic Roofing Felt is virtually untearable and will not absorb moisture, helping to prevent wrinkling.

Its specially designed surface combines enhanced walkability with a cooler working surface (vs. typical black asphalt felts).

Specs & Compliance download brochureTDI instructions for installation

TYPICAL PHYSICAL PROPERTIES

PROPERTY
ASTM Min. Average roll value Tolerance
Color Grey-White
Roll Width (in.) 48″ -0/+1/4”
Roll Length (ft.) 250
Total fabric weight (gsm) 100.50 +/- 5
Scrim (Weave Count) 9×7
MD Grab Strength ASTM D751 100 LBS 90 LBS MIN
CD Grab Strength ASTM D751 90 LBS 85 LBS MIN.
MD Trapezoidal Tear ASTM D2261 21 LBS 20 LBS MIN.
CD Trapezoidal Tear ASTMD 2261 17 LBS 15 LBS MIN
Elongation (MD/CD) % ASTM D751 19/18 15 MIN
Sandwich coating (gsm) 16
Antislip coating (gsm) 17
C O F ASTMD1894 0.44 0.3 MIN

Click here to download these specifications.

ROLL SIZES

One Square = 100 sq. ft. (9.29 m2)
10 Squares/Roll;* 56 Rolls per Pallet

CLOSE THIS WINDOW

CODE AND STANDARD COMPLIANCE

  • ATSM D 226, Type II
  • Standard Specification for Asphalt Saturated Organic Felt
  • Used in roofing and waterproofing
  • ICC-ES AC 207
  • Acceptance Criteria for Polypropylene Underlayments
  • CSA A 123.3
  • Acceptance Saturated Organic Roofing Felt
  • ASTM E 108/UL 790 – Class A
  • Standard Test Methods for Fire Tests of Roof Coverings
  • CSA 220.1

APPLICATIONS

Performance-grade synthetic roofing underlayment for use under:

  • Asphalt glass fiber mat shingle
  • Organic felt shingle
  • Metal (standing seam)
  • Tile
  • Slate
  • Approved for both vented and non-vented roof applications

WARRANTY

A 50-year limited warranty applies to All VB Synthetic underlayments. Please contact VB Synthetics or visit vbsynthetic.com for details. No warranty, express or implied, is given as to the merchantability and fitness for a particular purpose, or otherwise for applications outside the scope of the installation guidelines.

CLOSE THIS WINDOW

VB Defender Plus

VB Defender Plus
VB Defender Plus

VB Defender Plus is 25 times stronger and more durable than the leading 15-pound felt. Its superior lay-flat properties and water resistance keep it from warping, winkling, and cracking in cold weather, while its enhanced UV protection reduces heat buildup on hot days. It’s also 100% inorganic, so it will not rot or mold.

With less weight per roll, VB Defender Plus is easier to handle during all stages of installation, while remaining strong enough to resist tearing and stretching in high-traffic areas and during high winds. VB Synthetics’ proprietary SlipGuard skid-resistant surface offers dynamic steep-slope traction, ensuring the best walking surface available. Plus, VB Shield is environmentally responsible and may contribute to your LEED and RGBP ratings.

Specs & Compliance download brochureTDI installation instructions

TYPICAL PHYSICAL PROPERTIES

PROPERTY TEST METHOD TYPICAL PROPERTY
Grab Breaking MD/CD (lbs) ASTM D751 MD 119 lbs
CD 109 lbs
Tearing Strength MD/CD (lbs) ASTM D751 MD 22 lbs
CD 19 lbs
Elongation MD/CD (%) ASTM D751 MD 20%
CD 19%
COF ASTM D1894 0.3 / 0.50
Sandwich Coating (gsm) 22
Second Anti-Slip Coating (gsm) 21
Total Fabric Weight (gsm) 110.15

 

ROLL SIZES

One Square = 100 sq. ft. (9.29 m2

10 Squares/Roll; * 56 Rolls per Pallet

CLOSE THIS WINDOW

CODE AND STANDARD COMPLIANCE

  • ATSM D 226, Type II
  • Standard Specification for Asphalt Saturated Organic Felt
  • Used in roofing and waterproofing
  • ICC-ES AC 207
  • Acceptance Criteria for Polypropylene Underlayments
  • CSA A 123.3
  • Acceptance Saturated Organic Roofing Felt
  • ASTM E 108/UL 790 – Class A
  • Standard Test Methods for Fire Tests of Roof Coverings
  • CSA 220.1

APPLICATIONS

Performance-grade synthetic roofing underlayment for use under:

  • Asphalt glass fiber mat shingle
  • Organic felt shingle
  • Metal (standing seam)
  • Tile
  • Slate
  • Approved for both vented and non-vented roof applications

WARRANTY

A 50-year limited warranty applies to All VB Synthetic underlayments. Please contact VB Synthetics or visit vbsynthetic.com for details. No warranty, express or implied, is given as to the merchantability and fitness for a particular purpose, or otherwise for applications outside the scope of the installation guidelines.

CLOSE THIS WINDOW

VB Shield

VB Shield (unrolled)
VB Shield (rolled)

VB Shield is 25 times stronger and more durable than the leading 15-pound felt. Its superior lay-flat properties and water resistance keep it from warping, winkling, and cracking in cold weather, while its enhanced UV protection reduces heat buildup on hot days. It’s also 100% inorganic, so it will not rot or mold.

With less weight per roll, VB Shield is easier to handle during all stages of installation, while remaining strong enough to resist tearing and stretching in high-traffic areas and during high winds. VB Synthetics’ proprietary SlipGuard skid-resistant surface offers dynamic steep-slope traction, ensuring the best walking surface available. Plus, VB Shield is environmentally responsible and may contribute to your LEED and RGBP ratings.

Specs & Compliance download brochureTDI installation instructions

TYPICAL PHYSICAL PROPERTIES

PROPERTY
ASTM Min. Average roll value Tolerance
Color Grey-White
Roll Width (in.) 48″ -0/+1/4”
Roll Length (ft.) 250
Total fabric weight (gsm) 110.50 +/- 5
Scrim (Weave Count) 9×7
MD Grab Strength ASTM D751 120 LBS 110 LBS MIN
CD Grab Strength ASTM D751 110 LBS 85 LBS MIN.
MD Trapezoidal Tear ASTM D2261 22 LBS 20 LBS MIN.
CD Trapezoidal Tear ASTMD 2261 19 LBS 18 LBS MIN
Elongation (MD/CD) % ASTM D751 19/18 15 MIN
Sandwich coating (gsm) 18
Antislip coating (gsm) 20
C O F ASTMD1894 0.45 0.3 MIN

Click here to download these specifications.

ROLL SIZES

48” X 250’ (1.22m X 76.20m)

CLOSE THIS WINDOW

CODE AND STANDARD COMPLIANCE

  • ATSM D 226, Type II
  • Standard Specification for Asphalt Saturated Organic Felt
  • Used in roofing and waterproofing
  • ICC-ES AC 207
  • Acceptance Criteria for Polypropylene Underlayments
  • CSA A 123.3
  • Acceptance Saturated Organic Roofing Felt
  • ASTM E 108/UL 790 – Class A
  • Standard Test Methods for Fire Tests of Roof Coverings
  • CSA 220.1

APPLICATIONS

Performance-grade synthetic roofing underlayment for use under:

  • Asphalt glass fiber mat shingle
  • Organic felt shingle
  • Metal (standing seam)
  • Tile
  • Slate
  • Approved for both vented and non-vented roof applications

WARRANTY

A 50-year limited warranty applies to All VB Synthetic underlayments. Please contact VB Synthetics or visit vbsynthetic.com for details. No warranty, express or implied, is given as to the merchantability and fitness for a particular purpose, or otherwise for applications outside the scope of the installation guidelines.

CLOSE THIS WINDOW

VB Armor

VB Armor (un-rolled)
VB Armor (rolled)

Step up to the next level in safety, strength, and performance. VB Armor is stronger than 30-pound felt, but it’s lighter and easier to handle, making your job easier. VB Armor includes all the features of VB Shield, from the cutting-edge SlipGuard walking surface to five times more coverage per roll than Type 30 felt.

Like VB Shield, it meets building codes for residential and commercial projects, it is completely inorganic and asphalt-free (meaning no rotting or molding), and it is treated to resist excessive degradation from normal UV exposure for up to six months. So when you need the next level in roofing underlayment, VB Armor delivers premium quality you can count on.

Specs & Compliance download brochureTDI instructions for installation

TYPICAL PHYSICAL PROPERTIES

PROPERTY
ASTM Min. Average roll value Tolerance
Color Grey-White
Roll Width (in.) 48″ -0/+1/4”
Roll Length (ft.) 250
Total fabric weight (gsm) 155.50 +/- 5
Scrim (Weave Count) 9.5X10.5
MD Grab Strength ASTM D751 165 LBS 160 LBS MIN
CD Grab Strength ASTM D751 170 LBS 155 LBS MIN.
MD Trapezoidal Tear ASTM D2261 33 LBS 30 LBS MIN.
CD Trapezoidal Tear ASTMD 2261 31 LBS 30 LBS MIN
Elongation (MD/CD) % ASTM D751 19/18 15 MIN
Sandwich coating (gsm) 20
Antislip coating (gsm) 24
C O F ASTMD1894 0.46 0.3 MIN

Click here to download these specifications.

ROLL SIZES

48” X 250’ (1.22m X 76.20m)

CLOSE THIS WINDOW

CODE AND STANDARD COMPLIANCE

  • ATSM D 226, Type II
  • Standard Specification for Asphalt Saturated Organic Felt
  • Used in roofing and waterproofing
  • ICC-ES AC 207
  • Acceptance Criteria for Polypropylene Underlayments
  • CSA A 123.3
  • Acceptance Saturated Organic Roofing Felt
  • ASTM E 108/UL 790 – Class A
  • Standard Test Methods for Fire Tests of Roof Coverings
  • CSA 220.1

APPLICATIONS

Performance-grade synthetic roofing underlayment for use under:

  • Asphalt glass fiber mat shingle
  • Organic felt shingle
  • Metal (standing seam)
  • Tile
  • Slate
  • Approved for both vented and non-vented roof applications

WARRANTY

A 50-year limited warranty applies to All VB Synthetic underlayments. Please contact VB Synthetics or visit vbsynthetic.com for details. No warranty, express or implied, is given as to the merchantability and fitness for a particular purpose, or otherwise for applications outside the scope of the installation guidelines.

CLOSE THIS WINDOW

VB Extreme SA

VB Extreme SA
VB Extreme SA

VB Synthetics Extreme SA is a highly engineered Self Adhered Peel & Stick synthetic roofing underlayment designed for sloped roofs.

The adhesive layer is made from the advanced SBS Modified Bitumen based adhesive which performs extremely well in high as well as low temperatures and gives excellent adhesion to the primary roofing surface whether it is plywood or metal. The temperature performance range for VB Synthetics Extreme SA is -40° F to 260° F (-40° C to 126° C). It has a split release liner with silicone coating on both sides which helps in easier installation.

VB Extreme SA has a light gray top layer which provides for a cooler working surface. VB Extreme’s SUREGRIP high traction walking surface permits easier steep slope walk-ability, even during high condensation or moisture on the surface.

Roll Size: 36″ x 66′ 8″ (2 squares)

Minimum Purchase: One pallet (25 two-square rolls)

Features & Benefits

  • HIGH-TEMP Temperature performance range -40° F to 260° F
  • 48 mil thickness w/ UV protection up to 180 days
  • Works best for use under Metal, Shake, concrete tiles, slates & asphalt shingles
  • SLIPGUARD High Traction top surface with Light grey color

Specs & Compliance download brochureTDI instructions for installation

TYPICAL PHYSICAL PROPERTIES

PROPERTY TEST METHOD TYPICAL PROPERTY
Grab Breaking MD/CD (lbs) ASTM D751 MD 200 lbs
CD 150 lbs
Tearing Strength MD/CD (lbs) ASTM D751 MD 70 lbs
CD 50 lbs
Elongation MD/CD (%) ASTM D751 MD 20%
CD 19%
COF ASTM D1894 0.46
Sandwich Coating (gsm) 27
Second Anti-Slip Coating (gsm) 18
Total Fabric Weight (gsm) 155.5

Click here to download these specifications.

ROLL SIZES

36″ x 66′ 8″ (2 squares)

CLOSE THIS WINDOW

CODE AND STANDARD COMPLIANCE

  • ATSM D 226, Type II
  • Standard Specification for Asphalt Saturated Organic Felt
  • Used in roofing and waterproofing
  • ICC-ES AC 207
  • Acceptance Criteria for Polypropylene Underlayments
  • CSA A 123.3
  • Acceptance Saturated Organic Roofing Felt
  • ASTM E 108/UL 790 – Class A
  • Standard Test Methods for Fire Tests of Roof Coverings
  • CSA 220.1

APPLICATIONS

Performance-grade synthetic roofing underlayment for use under:

  • Asphalt glass fiber mat shingle
  • Organic felt shingle
  • Metal (standing seam)
  • Tile
  • Slate
  • Approved for both vented and non-vented roof applications

WARRANTY

A 50-year limited warranty applies to All VB Synthetic underlayments. Please contact VB Synthetics or visit vbsynthetic.com for details. No warranty, express or implied, is given as to the merchantability and fitness for a particular purpose, or otherwise for applications outside the scope of the installation guidelines.

CLOSE THIS WINDOW

NEWS & UPDATES

KEEP UP TO DATE WITH VB SYNTHETICS

CRCA Chicago – January 18–20th, 2023

CRCA Chicago – January 18-20th 2023

CRCA Chicago / Drury Lane convention center, Oak Brook, Il
January 18-20th, 2023
Booth# 511

NAHB/IBS, Las Vegas – January 31–February 2nd, 2023

NAHB/IBS, Las Vegas - January 31-February 2nd, 2023

NAHB/IBS, Las Vegas Convention center
January 31-February 2nd
Booth South Hall# SU 1015

International Roofing Expo, Kay Bailey – March 5–9th, 2023

International Roofing Expo, Kay Bailey - March 5-9th 2023

International Roofing Expo
Kay Bailey Hutchinson convention center
March 5th – March 9th
Booth# 6504

WTS Broward County Convention center – March 13–17th, 2023

WTS Broward County Convention center - March 13–17th 2023

WTS Broward County Convention center, Fort Lauderdale, FL
March 13th – 17th
Booth# 732

Western Roofing Expo

VB Synthetics - Western Roofing Expo
Western Roofing Expo, Paris Las Vegas, September 24-26, 2022

ALL WEATHER DEFENSE SYSTEMSVB SYNTHETICS

CONTACT VB SYNTHETICS
PHONE: 855-798-4546 OR ELECTRONICALLY







    copyright © 2020 VB Synthetics
    VB DEFENDER

    Click here to download these specifications.

    TYPICAL PHYSICAL PROPERTIES

    PROPERTY TEST METHOD TYPICAL PROPERTY
    Grab Breaking MD/CD (lbs) ASTM D751 MD 119 lbs
    CD 109 lbs
    Tearing Strength MD/CD (lbs) ASTM D751 MD 22 lbs
    CD 19 lbs
    Elongation MD/CD (%) ASTM D751 MD 20%
    CD 19%
    COF ASTM D1894 0.3 / 0.50
    Sandwich Coating (gsm) 22
    Second Anti-Slip Coating (gsm) 21
    Total Fabric Weight (gsm) 110.15

    ROLL SIZES

    One Square = 100 sq. ft. (9.29 m2)
    10 Squares/Roll;* 56 Rolls per Pallet

    CODE AND STANDARD COMPLIANCE

    • ATSM D 226, Type II
    • Standard Specification for Asphalt Saturated Organic Felt
    • Used in roofing and waterproofing
    • ICC-ES AC 207
    • Acceptance Criteria for Polypropylene Underlayments
    • CSA A 123.3
    • Acceptance Saturated Organic Roofing Felt
    • ASTM E 108/UL 790 – Class A
    • Standard Test Methods for Fire Tests of Roof Coverings
    • CSA 220.1

    APPLICATIONS

    Performance-grade synthetic roofing underlayment for use under:

    • Asphalt glass fiber mat shingle
    • Organic felt shingle
    • Metal (standing seam)
    • Tile
    • Slate
    • Approved for both vented and non-vented roof applications

    WARRANTY

    A 50-year limited warranty applies to All VB Synthetic underlayments. Please contact VB Synthetics or visit vbsynthetic.com for details. No warranty, express or implied, is given as to the merchantability and fitness for a particular purpose, or otherwise for applications outside the scope of the installation guidelines.

    Close Window
    VB DEFENDER PLUS

    Click here to download these specifications.

    TYPICAL PHYSICAL PROPERTIES

    PROPERTY TEST METHOD TYPICAL PROPERTY
    Grab Breaking MD/CD (lbs) ASTM D751 MD 119 lbs
    CD 109 lbs
    Tearing Strength MD/CD (lbs) ASTM D751 MD 22 lbs
    CD 19 lbs
    Elongation MD/CD (%) ASTM D751 MD 20%
    CD 19%
    COF ASTM D1894 0.3 / 0.50
    Sandwich Coating (gsm) 22
    Second Anti-Slip Coating (gsm) 21
    Total Fabric Weight (gsm) 110.15

     

    ROLL SIZES

    One Square = 100 sq. ft. (9.29 m2

    10 Squares/Roll; * 56 Rolls per Pallet

    CODE AND STANDARD COMPLIANCE

    • ATSM D 226, Type II
    • Standard Specification for Asphalt Saturated Organic Felt
    • Used in roofing and waterproofing
    • ICC-ES AC 207
    • Acceptance Criteria for Polypropylene Underlayments
    • CSA A 123.3
    • Acceptance Saturated Organic Roofing Felt
    • ASTM E 108/UL 790 – Class A
    • Standard Test Methods for Fire Tests of Roof Coverings
    • CSA 220.1

    APPLICATIONS

    Performance-grade synthetic roofing underlayment for use under:

    • Asphalt glass fiber mat shingle
    • Organic felt shingle
    • Metal (standing seam)
    • Tile
    • Slate
    • Approved for both vented and non-vented roof applications

    WARRANTY

    A 50-year limited warranty applies to All VB Synthetic underlayments. Please contact VB Synthetics or visit vbsynthetic.com for details. No warranty, express or implied, is given as to the merchantability and fitness for a particular purpose, or otherwise for applications outside the scope of the installation guidelines.

    Close Window
    VB SHIELD

    Click here to download these specifications.

    TYPICAL PHYSICAL PROPERTIES

    PROPERTY
    ASTM Min. Average roll value Tolerance
    Color Grey-White
    Roll Width (in.) 48″ -0/+1/4”
    Roll Length (ft.) 250
    Total fabric weight (gsm) 110.50 +/- 5
    Scrim (Weave Count) 9×7
    MD Grab Strength ASTM D751 120 LBS 110 LBS MIN
    CD Grab Strength ASTM D751 110 LBS 85 LBS MIN.
    MD Trapezoidal Tear ASTM D2261 22 LBS 20 LBS MIN.
    CD Trapezoidal Tear ASTMD 2261 19 LBS 18 LBS MIN
    Elongation (MD/CD) % ASTM D751 19/18 15 MIN
    Sandwich coating (gsm) 18
    Antislip coating (gsm) 20
    C O F ASTMD1894 0.45 0.3 MIN

    ROLL SIZES

    48” X 250’ (1.22m X 76.20m)

    CODE AND STANDARD COMPLIANCE

    • ATSM D 226, Type II
    • Standard Specification for Asphalt Saturated Organic Felt
    • Used in roofing and waterproofing
    • ICC-ES AC 207
    • Acceptance Criteria for Polypropylene Underlayments
    • CSA A 123.3
    • Acceptance Saturated Organic Roofing Felt
    • ASTM E 108/UL 790 – Class A
    • Standard Test Methods for Fire Tests of Roof Coverings
    • CSA 220.1

    APPLICATIONS

    Performance-grade synthetic roofing underlayment for use under:

    • Asphalt glass fiber mat shingle
    • Organic felt shingle
    • Metal (standing seam)
    • Tile
    • Slate
    • Approved for both vented and non-vented roof applications

    WARRANTY

    A 50-year limited warranty applies to All VB Synthetic underlayments. Please contact VB Synthetics or visit vbsynthetic.com for details. No warranty, express or implied, is given as to the merchantability and fitness for a particular purpose, or otherwise for applications outside the scope of the installation guidelines.

    Close Window
    VB ARMOR

    Click here to download these specifications.

    TYPICAL PHYSICAL PROPERTIES

    PROPERTY
    ASTM Min. Average roll value Tolerance
    Color Grey-White
    Roll Width (in.) 48″ -0/+1/4”
    Roll Length (ft.) 250
    Total fabric weight (gsm) 155.50 +/- 5
    Scrim (Weave Count) 9.5X10.5
    MD Grab Strength ASTM D751 165 LBS 160 LBS MIN
    CD Grab Strength ASTM D751 170 LBS 155 LBS MIN.
    MD Trapezoidal Tear ASTM D2261 33 LBS 30 LBS MIN.
    CD Trapezoidal Tear ASTMD 2261 31 LBS 30 LBS MIN
    Elongation (MD/CD) % ASTM D751 19/18 15 MIN
    Sandwich coating (gsm) 20
    Antislip coating (gsm) 24
    C O F ASTMD1894 0.46 0.3 MIN

    ROLL SIZES

    48” X 250’ (1.22m X 76.20m)

    CODE AND STANDARD COMPLIANCE

    • ATSM D 226, Type II
    • Standard Specification for Asphalt Saturated Organic Felt
    • Used in roofing and waterproofing
    • ICC-ES AC 207
    • Acceptance Criteria for Polypropylene Underlayments
    • CSA A 123.3
    • Acceptance Saturated Organic Roofing Felt
    • ASTM E 108/UL 790 – Class A
    • Standard Test Methods for Fire Tests of Roof Coverings
    • CSA 220.1

    APPLICATIONS

    Performance-grade synthetic roofing underlayment for use under:

    • Asphalt glass fiber mat shingle
    • Organic felt shingle
    • Metal (standing seam)
    • Tile
    • Slate
    • Approved for both vented and non-vented roof applications

    WARRANTY

    A 50-year limited warranty applies to All VB Synthetic underlayments. Please contact VB Synthetics or visit vbsynthetic.com for details. No warranty, express or implied, is given as to the merchantability and fitness for a particular purpose, or otherwise for applications outside the scope of the installation guidelines.

    Close Window
    VB EXTREME SA

    Click here to download these specifications.

    TYPICAL PHYSICAL PROPERTIES

    PROPERTY TEST METHOD TYPICAL PROPERTY
    Grab Breaking MD/CD (lbs) ASTM D751 MD 200 lbs
    CD 150 lbs
    Tearing Strength MD/CD (lbs) ASTM D751 MD 70 lbs
    CD 50 lbs
    Elongation MD/CD (%) ASTM D751 MD 20%
    CD 19%
    COF ASTM D1894 0.46
    Sandwich Coating (gsm) 27
    Second Anti-Slip Coating (gsm) 18
    Total Fabric Weight (gsm) 155.5

    ROLL SIZES

    36″ x 66′ 8″ (2 squares)

    CODE AND STANDARD COMPLIANCE

    • ATSM D 226, Type II
    • Standard Specification for Asphalt Saturated Organic Felt
    • Used in roofing and waterproofing
    • ICC-ES AC 207
    • Acceptance Criteria for Polypropylene Underlayments
    • CSA A 123.3
    • Acceptance Saturated Organic Roofing Felt
    • ASTM E 108/UL 790 – Class A
    • Standard Test Methods for Fire Tests of Roof Coverings
    • CSA 220.1

    APPLICATIONS

    Performance-grade synthetic roofing underlayment for use under:

    • Asphalt glass fiber mat shingle
    • Organic felt shingle
    • Metal (standing seam)
    • Tile
    • Slate
    • Approved for both vented and non-vented roof applications

    WARRANTY

    A 50-year limited warranty applies to All VB Synthetic underlayments. Please contact VB Synthetics or visit vbsynthetic.com for details. No warranty, express or implied, is given as to the merchantability and fitness for a particular purpose, or otherwise for applications outside the scope of the installation guidelines.

    Close Window