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APOC Weather-Armor FT³ Fleece-Top Roof Underlayment, 2 Square Roll
Regular price $128.50Orders start at $399 — combine any items to reach the minimum. Learn more
APOC Weather-Armor FT³ Fleece-Top Roof Underlayment, 2 Square Roll
APOC Weather-Armor FT³ is a premium fleece-top roof underlayment and leak barrier suited to tile and metal roofing and any job requiring a mechanically fastened system. Each roll covers 2 squares and installs under foam or mechanical attachment. The Tri-Bond three-component adhesive system and RST Reinforced Seam Technology make it the strongest and most durable in its class.
Key Features:
- Fleece-Top Traction: The Safe-Step Fleece-Top surface adds traction for safer walking during installation.
- 100% Waterproof: A 100% waterproof, nail-sealable membrane that helps stop leaks, ice dams and water damage.
- Tri-Bond Adhesive: Uses Tri-Bond's patented 3-component adhesive and waterproofing system for class-leading strength.
- Reinforced Seams: RST Reinforced Seam Technology adds strength at laps and seams.
- High-Temperature Rated: High-temperature performance suits hot roof systems like tile and metal.
- Extended UV Exposure: UV blocked with extended exposure time for longer uncovered duration on the deck.
- Foam or Mechanically Fastened: Heavy-duty polyester sheet attaches with foam adhesive or mechanical fasteners.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | APOC |
| Sell unit | 1 roll, 2 squares |
| Product line | Weather-Armor FT³ |
| Material | Heavy-duty polyester underlayment with fleece-top surface |
| Finish / texture | Safe-Step Fleece-Top traction surface |
| Coverage per unit | 2 squares per roll |
| Available sizes | ['2 Square/Roll'] |
| Membrane | 100% waterproof and nail sealable |
| Adhesive system | Tri-Bond patented 3-component adhesive and waterproofing |
| Seam technology | RST Reinforced Seam Technology |
| Temperature performance | High temperature performance |
| UV exposure | UV blocked with extended exposure time |
| Attachment | Foam or mechanical attachment |
| Intended use | Tile, metal and mechanically fastened roof underlayment / leak barrier |
Coverage & How Much You Need:
One roll covers 2 squares (200 sq ft) of roof deck before laps. Plan lap allowances per the roof system's specification; RST Reinforced Seam Technology strengthens the seams where rolls overlap.
Fit and Compatibility:
Designed for tile and metal roofing systems and any application requiring a mechanically fastened underlayment. Installs under foam-adhered or mechanically attached roof coverings; pair with the specified fasteners or foam adhesive and follow the tile or metal system's underlayment details.
Frequently Asked Questions (FAQ):
Q: What is included with one roll?
A: One roll of APOC Weather-Armor FT³ Fleece-Top underlayment covering 2 squares.
Q: How much area does a roll cover?
A: Each roll covers 2 squares, or about 200 square feet before lap deductions; size your order by squares plus lap allowance.
Q: Can it be used under metal and tile?
A: Yes, it is ideally suited for tile and metal roofing systems and other conditions requiring a mechanically fastened roof system.
Q: Is it waterproof and nail sealable?
A: Yes, it is a 100% waterproof, nail-sealable membrane that helps stop leaks, ice dams and water damage.
Q: Is it safe to walk on?
A: The Safe-Step Fleece-Top surface is designed for added traction during installation.
Q: How long can it be exposed?
A: It is UV blocked with extended exposure time; check the manufacturer's data for the exact allowed exposure period.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
FT³ is a strong choice under tile and metal where heat and long exposure windows demand more than a standard underlayment. Order one roll per 2 squares plus extra for laps, and stage rolls so the fleece-top stays clean and traction-friendly. Follow the specified fastening or foam-attach pattern so the nail-sealable membrane does its job around every fastener. Its high-temperature construction makes it a better pick than asphalt felt under dark metal panels.
Underlayment installation on sloped decks involves working at height; use fall protection, and rely on the fleece-top for traction but never on wet or icy surfaces.
Order APOC Weather-Armor FT³ Fleece-Top Underlayment by the 2-square roll for your next tile or metal roof.
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