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Owens Corning WeatherLock 180 Specialty Tile & Metal Underlayment Roll 3 ft x 71.3 ft Self-Adhered Waterproofing Barrier
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Owens Corning WeatherLock 180 Specialty Tile & Metal Underlayment Roll 3 ft x 71.3 ft Self-Adhered Waterproofing Barrier
This is a self-adhered WeatherLock 180 Specialty Tile & Metal underlayment roll from Owens Corning, 3 ft wide x 71.3 ft long, providing 214 sq ft of waterproofing protection under foam or mechanically fastened tile and metal roofing. One roll is the sell unit and it resists UV degradation for up to 180 days of exposure. It pairs with tile and metal roof systems as part of the Owens Corning Total Protection Roofing System.
Key Features:
- 180-Day UV Exposure: Resists UV degradation when left exposed for up to 180 days.
- Self-Adhered Lap Edge: Made with a sticky selvage edge for superior lap adhesion.
- High-Temp Performance: Withstands temperatures up to 260°F without fusing or degrading overlaying metal roofing.
- Slip-Resistant Surface: Polyester walking surface provides a slip-resistant work area during installation.
- Puncture & Tear Resistance: High puncture- and tear-resistant surface for demanding tile and metal applications.
- Fire Classified: UL Class A fire resistance under asphalt shingles and quarry slate, concrete and clay tile; UL Class C under metal sheet and metal shingles.
- Warranty Backed: Covered by a 30-year limited warranty.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Owens Corning |
| Manufacturer model | 1173519 |
| Sell unit | 1 roll, 3 ft x 71.3 ft (214 sq ft) |
| Product line | WeatherLock® Specialty Tile & Metal |
| Dimensions | 3 ft (36 in.) x 71.3 ft roll |
| Coverage per unit | 214 sq ft gross (2 squares per roll) |
| Color | Black |
| Adhesive | Modified asphalt |
| Surface | Polyester fabric with more than 80% recycled material |
| Backing | Split-sheet peel-away release liner |
| Application | Foam adhesive set or mechanically fastened roof tiles and metal roofing systems |
| UV exposure rating | Up to 180 days |
| High temperature rating | Up to 260°F |
| Fire rating | UL Class A (under asphalt shingles, quarry slate, concrete and clay tile); UL Class C (under metal panels and shingles) per ASTM E108/UL 790 |
| Weight | 66 lb per roll |
| Approvals | ASTM D1970; ICC-ES ESR 1783; Florida Product Approval; Miami-Dade Product Approval; TDI Approved; CSA A123.5; FBC TAS103-20 tile slippage resistance; LEED |
| Manufacturer warranty summary | 30-year limited warranty (see actual warranty for complete details and limitations) |
Coverage & How Much You Need:
One roll measures 3 ft x 71.3 ft and provides 214 sq ft of gross coverage, about 2 squares. Divide your total roof area by 214 sq ft per roll to estimate rolls needed, accounting for laps with the sticky selvage edge.
Fit and Compatibility:
Designed for use under foam adhesive set or mechanically fastened concrete and clay tile and metal roofing systems, and as part of the Owens Corning Total Protection Roofing System. Install per the WeatherLock Specialty Tile & Metal installation instructions; flashing, fasteners and decking are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included with one roll?
A: One roll of WeatherLock 180 Specialty Tile & Metal self-adhered underlayment, 3 ft x 71.3 ft, covering 214 sq ft.
Q: How many rolls do I need for my roof?
A: Divide the roof area to be covered by 214 sq ft per roll and add for laps at the selvage edge and waste around penetrations.
Q: How long can it stay exposed before the roof is installed?
A: It resists UV degradation for up to 180 days of exposure.
Q: Can it be used under metal roofing?
A: Yes, it is designed for foam or mechanically fastened tile and metal roofing systems and withstands temperatures up to 260°F under metal.
Q: Is it a fire-rated underlayment?
A: It carries UL Class A fire resistance under asphalt shingles and quarry slate, concrete and clay tile, and UL Class C under metal sheet and metal shingles per ASTM E108/UL 790.
Q: What adhesion and weight should I plan for?
A: It is self-adhered with a modified asphalt adhesive and sticky selvage edge; the roll weighs 66 lb, so plan for two-person handling.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Choose WeatherLock 180 when your tile or metal roof will have extended exposure before covering, since the 180-day UV rating outlasts standard ice and water barriers. Install with the sticky selvage laps shingle-fashion per the manufacturer's instructions, and prime or prepare the deck as directed. At 2 squares per roll, a 20-square roof takes roughly 10 rolls plus waste. Confirm approval with your local code official in Florida and Texas coastal markets, where this product carries Miami-Dade and TDI approvals.
Follow the manufacturer's installation instructions and local building codes, and use proper fall protection and slip-resistant footwear when working on the polyester walking surface, especially when rolls are left exposed on the roof.
Order the Owens Corning WeatherLock 180 Specialty Tile & Metal underlayment roll for long-exposure tile and metal roof waterproofing.
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