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APOC 25 Felt #30HD Heavy Duty Asphalt Roofing Underlayment, 18 in. x 72 ft. or 36 in. x 72 ft. Roll
Regular price $26.25Orders start at $399 — combine any items to reach the minimum. Learn more
APOC 25 Felt #30HD Heavy Duty Asphalt Roofing Underlayment, 18 in. x 72 ft. or 36 in. x 72 ft. Roll
APOC 25 Felt #30HD is a heavy-duty organic felt underlayment with True-Breathe Technology that sheds rain while letting water vapor escape from the home. It installs under shingles, tile and other primary roof coverings. The line is sold by the roll in two widths: 18 in. x 72 ft. or 36 in. x 72 ft.
Key Features:
- Breathable membrane: True-Breathe Technology keeps rain and water out while allowing water vapor from cooking, cleaning and bathing to escape.
- Protects the deck: Vapor release helps prevent premature damage and rotting of roof deck materials that can lead to unsafe structures and mold.
- Heavy-duty strength: #30HD heavy-duty construction provides extra strong moisture protection under primary roof coverings.
- Wide compatibility: Designed for use under roof shingles, tile and other primary coverings.
- Two roll widths: Available in 18 in. x 72 ft. and 36 in. x 72 ft. rolls to match different roof layouts.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | APOC |
| Sell unit | 1 roll |
| Product line | APOC 25 Felt #30HD Heavy Duty Protection |
| Available sizes | 18 in. x 72 ft. roll; 36 in. x 72 ft. roll |
| Material | Organic asphalt-saturated felt |
| Dimensions | 18 in. x 72 ft. or 36 in. x 72 ft. per roll |
| Coverage per unit | 72 ft. of length per roll; up to 36 in. width per roll depending on variant |
| Intended use | Heavy-duty moisture protection under shingles, tile and other primary roof coverings |
| Technology | True-Breathe breathable membrane |
Coverage & How Much You Need:
An 18 in. x 72 ft. roll covers about 108 sq ft of roof before laps, while the 36 in. x 72 ft. roll covers about 216 sq ft before laps. Plan horizontal lap laps per code and shingle exposure, and order one roll per eave course plus full-field courses.
Fit and Compatibility:
Designed for use under asphalt shingles, tile and other primary roof coverings, and pairs with APOC roofing products on the same project. Sell unit is one roll; fasteners and primary covering are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included with one order?
A: One roll of APOC 25 Felt #30HD heavy-duty felt underlayment, in either 18 in. x 72 ft. or 36 in. x 72 ft. width.
Q: How much area does a roll cover?
A: The 36 in. x 72 ft. roll covers roughly 216 sq ft before laps and the 18 in. roll roughly 108 sq ft; final coverage is reduced by laps.
Q: What is True-Breathe Technology?
A: It is the engineered construction that keeps rain and water outside while letting household water vapor escape, helping protect the roof deck from rot and mold.
Q: Where is it installed?
A: Over the roof deck, under shingles, tile or other primary roof coverings, as the moisture-protection layer.
Q: Why choose heavy-duty felt over standard felt?
A: The #30HD grade offers extra strength and heavy-duty moisture protection compared with lighter felts.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Choose the 36 in. roll for open field work to cut laps and install faster; the 18 in. roll suits eave starter courses, valleys and repair work. Fasten per the shingle manufacturer's requirements and overlap courses so water always sheds downward. Install the primary covering promptly after underlayment to limit exposure.
Work on roofs only with proper fall protection, and follow local building codes for underlayment and ice/water requirements.
Order APOC 25 Felt #30HD heavy-duty underlayment rolls to protect your next reroof.
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