Warrior 30# Type II Felt Underlayment ASTM D226, 2 Square Roll, Black

Warrior 30# Type II felt underlayment is an asphalt-saturated organic felt that meets ASTM D226 and adds an extra moisture barrier against wind-blown rain. Each roll covers 2 squares and is heavy-duty yet slip resistant. Install beneath shingles as a secondary water-shedding layer.

Key Features:

• ASTM D226 Type II: Manufactured to meet ASTM D226 Type II specification for 30-pound felt.
• Moisture barrier: Provides an extra moisture barrier to wind-blown rain while remaining permeable.
• Asphalt saturated: Asphalt-saturated material made of recycled paper and asphalt for excellent waterproofing.
• Lays flat: Heavy-duty felt design lays flat and minimizes wrinkling during installation.
• Slip resistant: Slip-resistant surface helps installers keep their footing on the roof.
• 2 square roll: Each roll covers 2 squares (200 sq ft) of roof deck.

Specifications Table:

Coverage & How Much You Need:

One roll covers 2 squares, or 200 sq ft of roof deck. Divide total roof area in squares by 2 and add allowance for laps at eaves and in valleys per code requirements.

Fit and Compatibility:

Use under asphalt shingles and other steep-slope roof coverings. Pair with drip edge and starter products; self-adhered ice-and-water membrane may be required at eaves in cold climates per local code.

Frequently Asked Questions (FAQ):

Q: What does one roll cover?
A: Each roll covers 2 squares, approximately 200 sq ft of roof area.

Q: Does it meet a standard?
A: Yes, it is a 30# Type II felt manufactured to ASTM D226.

Q: Is it waterproof?
A: The asphalt-saturated felt provides an extra moisture barrier to wind-blown rain, but it is permeable and is not a substitute for a fully waterproof membrane.

Q: How is it installed?
A: Roll it horizontally over the deck with the required laps, fasten per code and manufacturer instructions, and install shingles over it.

Q: Why 30# instead of 15# felt?
A: The heavier 30-pound construction lays flatter, minimizes wrinkling and provides a thicker, more robust moisture barrier.

Q: Is the surface slippery?
A: No, the felt is slip resistant to help installer footing.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Order one roll per 2 squares and add 5-10% for laps at eaves, rakes and valleys. Install from the eave upward so upper courses shed water over lower laps. In cold climates, pair with a self-adhered membrane at eaves and valleys where ice damming is a concern.

Felt underlayment can be slippery, especially when wet or dusty; wear proper footwear and fall protection while installing.

Get Warrior 30# Type II ASTM D226 felt underlayment rolls for dependable secondary moisture protection under your shingles.