For roofing projects in high-heat environments and hurricane-prone regions, WaterGuard™ SA TileGuard Ultra from A1A Wholesale Supply provides unmatched structural integrity. This 80-mil heavyweight underlayment is built on a robust polyester reinforcement with a non-woven top surface, designed to provide superior traction for installers and a stable substrate for heavy clay or concrete tiles.
The “Ultra” designation signifies its ability to withstand temperatures up to 265°F without degradation, bleeding, or losing adhesion—a critical requirement for metal roof assemblies and tile systems in the Sun Belt. Because it meets the Florida High-Velocity Hurricane Zone (HVHZ) requirements for Miami-Dade and other coastal counties, contractors can rely on it for superior wind-uplift resistance and long-term waterproofing.
Product Details
Manufacturer: G.A.P. Roofing, Inc.
Material: Polyester-reinforced, non-woven surfaced SBS polymer-modified asphalt.
Thickness: Heavy-duty 80 mils.
Temperature Resistance: High-temp rated up to 265°F (129°C).
Roll Dimensions: 39-3/8″ wide x 66′ long.
Coverage: 216 sq. ft. (Approx. 2 Squares).
Weight: 68 lbs per roll.
Code Compliance: Miami-Dade Approved; Florida High-Velocity Hurricane Zone (HVHZ) compliant.
Features & Benefits
Dual-Attachment Approval: Specifically engineered for both mechanically attached tile and high-performance adhesive foam-bonded clay and concrete tile systems.
Extreme Heat Stability: The high-temperature bituminous formulation ensures the membrane won’t soften or slide under metal or tile in peak summer heat.
High-Velocity Wind Protection: Meets the nation’s strictest building codes for hurricane zones, providing a permanent watertight seal against wind-driven rain.
Polyester Reinforcement: Provides exceptional puncture resistance and tensile strength, easily supporting the weight of stacked tiles during installation.
Split-Release Liner: Features a poly split-release film for faster, more accurate installation and effortless self-bonding at overlaps and seams.
Versatile Flashing Use: Can be utilized as a high-performance flashing membrane for valleys, transitions, and roof penetrations like skylights and vents.
Applications
Tile Roofing: Ideal for all clay and concrete tile installations, including those using foam adhesive systems.
Metal Roofing: Provides the necessary thermal stability for metal roof assemblies where surface temperatures can exceed 200°F.
Coastal & Hurricane Zones: Designed for use in Miami-Dade and other regions requiring HVHZ-certified underlayments.
Critical Waterproofing: Used for full-deck coverage or as a reinforced flashing membrane in high-risk leak areas.
Technical Specifications & Logistics
| Property | Value |
| Thickness | 80 mils |
| Max Temp Resistance | 265°F |
| Roll Size | 39-3/8″ x 66′ |
| Coverage Area | 200 sq. ft. |
| Weight | 68 lbs per roll |
| HVHZ Approved | Yes (Miami-Dade / Broward) |





