APOC Weather-Armor® SB1 Self-Bond® Roof Underlayment

APOC Weather-Armor® SB1 Self-Bond® Ice & Water Shield

Get the best pricing on roofing underlayment with APOC Weather-Armor® SB1 Self-Bond® from VanBoxel Supply. This premium all purpose 60 mil self-adhered membrane is engineered to deliver long-lasting waterproof protection for steep-slope roofing systems in both residential and commercial applications.

Built with high-strength fiberglass reinforcement, exceptional elasticity, and a durable non-skid mineral surface, APOC SB1 creates a highly rubberized waterproofing barrier that helps defend against ice dams, wind-driven rain, moisture intrusion, hail, snow, and severe weather conditions.

Built for Critical Roof Protection

APOC Weather-Armor® SB1 is designed for use beneath asphalt shingles, wood shake, slate, and other steep-slope roofing materials. It can be installed across an entire roof deck or used to reinforce vulnerable areas where leaks most commonly occur.

• Perimeter roof edges
• Valleys
• Flashing details
• Metal joints
• Roof penetrations
• Entire roof deck applications

For regions exposed to ice, snow, strong winds, or heavy rain, full roof deck coverage is recommended for maximum protection.

Advanced Waterproofing Performance

Unlike traditional felt roofing underlayment or paper for roof systems, APOC SB1 bonds directly to the roof deck to create a durable waterproof membrane. The highly rubberized surface is waterproof and nail sealable, helping prevent moisture migration around fasteners and roof penetrations.

Excellent Traction & Job Site Safety

The durable non-skid mineral finish provides exceptional traction and enhanced walkability during installation. The scuff-resistant surface helps roofing crews maintain safer footing while working on steep-slope applications.

• Excellent traction
• Walkable surface
• Scuff resistant finish
• Improved installer safety

Fiberglass Reinforced for Long-Term Durability

APOC SB1 is reinforced with high-strength fiberglass to provide enhanced dimensional stability and long-term performance. The reinforced construction helps strengthen vulnerable roof joints while resisting stretching, distortion, wrinkling, and buckling during weather exposure.

• Maximum flexibility and longevity
• Enhanced dimensional stability
• Reinforces vulnerable roof areas
• Prevents wrinkling and buckling
• Maintains long-term waterproof protection

Whole Roof or Detail Protection

Whether used as complete roof deck protection or installed in critical leak-prone areas, APOC Weather-Armor® SB1 provides dependable waterproof performance for demanding roofing projects. For severe or harsh climates (ice, snow, strong winds or heavy rain), full roof coverage is recommended.

• Eaves and roof edges
• Valleys
• Flashing transitions
• Roof penetrations
• Metal joints
• High-risk leak zones

Why Contractors Buy from VanBoxel Supply

VanBoxel Supply is a roofing supply company focused on providing premium roofing materials direct to contractors throughout the United States. Whether you’re purchasing roofing underlayment pallets and truckloads or sourcing roofing materials for large jobs, our team delivers contractor-focused pricing and nationwide shipping.

• Roofing underlayment wholesale pricing
• Roofing materials shipped nationwide
• Roofing supply direct to contractors
• Contractor volume discounts
• Nationwide roofing supply network
• Wholesale roofing materials shipped free

Complete Your Roofing System

Pair APOC Weather-Armor® SB1 with additional contractor-grade roofing products available from VanBoxel Supply.

• Coil roofing nails wholesale
• Roof cap nails
• Aluminum drip edge
• Steel drip edge products
• Drip edge flashing
• Continuous ridge vent
• Plastic ridge vent systems
• Roof ridge ventilation products

Technical Specifications