Underlayments

We at Metal Formers, Inc. provide top-of-the-line Synthetic Roofing Underlayments by VB Synthetics. A leading distributor of synthetic underlayment solutions, VB Synthetics is dedicated to excellence and committed to innovation in the building envelope industry.

VB Synthetics’ passion for all aspects of the building envelope ensures that their products are designed to meet the highest standards of durability and performance, providing comprehensive roofing solutions that prioritize quality and innovation. They are engineered to withstand harsh weather conditions, are lighter in weight, and offer easier installation, making them an ideal modern alternative to traditional felt.

TYPES OF ROOFING UNDERLAYMENT

VB Defender 6.5 mil Synthetic Felt
VB Extreme SA™ for Hi-Temp, Ice, & Water

UNDERLAYMENT SPECS

VB Synthetics Roof Underlayment™ – Defender is a four-layer, rugged roofing material crafted for steep slopes. Made from 100% inorganic materials, Defender underlayment boasts superior grip with two surface anti-slip coating, stays flat during installation using either caped roofing nails or caped staples, and is resistant to biological growth with the ability to endure sunlight exposure for up to 180 days. This lightweight yet durable underlayment is a cost-effective and time-efficient solution for roofing projects.

Key Features:

  • Mechanical Attachment: The underlayment is securely fastened with nails or staples, ensuring it stays in place even in high winds.
  • Coated Surface: A specialized coating on the woven material enhances water resistance, protecting your roof from potential leaks.
  • Woven Synthetic Material: This construction offers superior strength and flexibility, allowing the underlayment to conform to the roof’s shape while resisting stretching and damage.

Benefits:

  • Durability: Synthetic roofing underlayments like this are less likely to rip and more capable of withstanding harsh weather conditions.
  • Safety: The non-slip surface protects workers during installation by providing better traction.
  • Water Resistance: The coated surface effectively sheds water, protecting your home until the final roofing material is installed.

 

Dimensions
Width 4ft N/A
Length 250ft N/A
Area Per Roll 1,000 sq ft N/A
Total Fabric Weight (GSM) 100 +/-5
CD Grab Strength 90lbs ASTM D751
MD Grab Strength 100lbs ASTM D751
Elongation 19-18 ASTM D751
Sandwich Coating (GSM) 16 ASTM D751
Anti-Slip Coating (GSM) 17 ASTM D751
Scrim (Weave Count) 9×7 N/A
Coefficient of Friction 0.3 ASTM D1894

Packaging

  • 6.5 mil
  • 21lb Roll Weight
  • 56 Rolls Per Pallet
  • 1,288 Weight Per Pallet

Compliance

  • ASTM D266 TYPE II
  • ICC-ES AC207
  • CSA A123.3
  • TDI APPROVED
  • Florida Building Code – FL20155
  • ASTM E108 CLASS A
  • UL 790 CLASS A
  • Miami Dade Approved

VB Extreme SA™ is a specialized Peel & Stick material for sloped roofs. It uses advanced SBS Modified Bitumen adhesive that works well in extreme temperatures (-20˚F to 260˚F). It sticks to metal and plywood surfaces securely. The split release liner with silicone coating makes installation easier. Plus, it features Suregrip Technology for safe walking on sloped roofs.

This product is also specifically crafted to serve as a secondary water barrier in the construction of sloped roof systems. It is designed to provide enhanced durability, making it suitable for scenarios demanding extended exposure periods. Whether you’re dealing with harsh weather conditions or simply looking for long-lasting protection, VB Extreme SA™ ensures your roof stays dry and secure.

Key Features:

  • Self-Adhesive Underface: Simplifies the installation process with a silicone split-back release film, ensuring a hassle-free application.
  • Durability: Capable of withstanding up to 260°F, making it suitable for various high-temperature applications.
  • UV Protection: Offers substantial UV resistance for up to 180 days, providing reliable performance even under prolonged sunlight exposure.

Optimize your roofing projects by selecting a membrane that combines ease of use, durability, and excellent UV protection.

 

Technical Specifications
Test Properties Test Standard Typical Values
Unrollability ASTM D 1970 NO CRACKING, TEARING OR DAMAGE
Thickness Mills ASTM D 5147 48 MILS
Tensile Strength ASTM D 1970 MD128/CD107
Adhesion To Plywood Lb/Ft ASTM D 1970
40°F 9.4
75°F 13.3
Thermal Stability ASTM D 1970 250°F PASS
Low Temperature Flexibility ICC AC 48 PASS
Tear Resistance Lb/F ASTM D 1970 MD163/CD184
Permeability ASTM E96 0.03
Nail Sealability ASTM D 1970 PASS
Temperature Range -40°F TO 260°F
Fire Rating ASTM E 108

Packaging

  • 66.7′ Roll Length
  • 36″ Roll Width
  • 48LBS Roll Weight
  • 2 Squares Per Roll
  • 25 Rolls Per Pallet
  • 1,300LBS Weight Per Pallet