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G.A.P. WaterGuard SA MetalGuard HT Self-Adhered Ice & Water Underlayment, 2 Squares per Roll
Regular price $176.00Orders start at $399 — combine any items to reach the minimum. Learn more
G.A.P. WaterGuard SA MetalGuard HT Self-Adhered Ice & Water Underlayment, 2 Squares per Roll
G.A.P. WaterGuard SA MetalGuard HT is a self-adhered ice and water underlayment engineered for high-temperature applications such as metal roofing. Each roll covers 2 squares and pairs a textured, slip-resistant polyolefin film surface with an SBS rubberized adhesive backing for under-metal and tile roofs.
Key Features:
- Slip-resistant surface: Unique textured polyolefin film surface gives a greater feeling of safety and security while walking.
- SBS adhesive backing: Modified bitumen SBS rubberized adhesive with a wide temperature installation range and strong nail and screw sealability.
- Fiberglass reinforcement: Highly pliable fiberglass mat conforms easily to valleys, corners and angles.
- High-temperature rated: Formulated for use under metal roofing and other high-temperature roofing requirements.
- Easy release liner: Poly split release liner makes application easier.
- Versatile use: Also ideal for mechanically fastened tile and direct-to-deck synthetic roofing materials.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | G.A.P. |
| Sell unit | 1 roll, 2 squares |
| Product line | WaterGuard SA MetalGuard HT |
| Material | SBS bituminous adhesive with polyolefin film surface and fiberglass mat reinforcement |
| Color / finish | Slip-resistant polyolefin film surface |
| Coverage per unit | 2 squares per roll |
| Wind / fire / impact rating | High-temperature resistant formulation |
| Intended use | Under metal roofing, mechanically fastened tile and direct-to-deck synthetic roofing |
Coverage & How Much You Need:
One roll covers 2 squares (200 sq ft) of roof deck. Plan rolls by dividing the protected area, such as eaves and valleys, by 200 sq ft and allowing for laps per the manufacturer's instructions.
Fit and Compatibility:
Designed for use under metal roofing, mechanically fastened tile, and direct-to-deck synthetic roofing. It installs on the roof deck; primers, fasteners and drip edge are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One self-adhered roll covering 2 squares (200 sq ft).
Q: How much area does a roll cover?
A: Each roll covers 2 squares, so five rolls cover about 10 squares before lap allowances.
Q: Is it suitable under metal roofing?
A: Yes, the high-temperature formulation is specifically ideal for use under metal roofing.
Q: Can it handle hot climates?
A: It is a high-temperature resistant material with an SBS adhesive designed for a wide temperature installation range.
Q: Is the surface safe to walk on?
A: The unique textured, slip-resistant surface gives a greater feeling of safety and security while walking.
Q: Can it be used on valleys and corners?
A: Yes, the pliable fiberglass mat reinforcement conforms easily to valleys, corners and angles.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Choose this MetalGuard HT grade when metal or tile roofing will heat the deck beyond what standard asphalt underlayments tolerate. Apply to a clean, dry deck within the adhesive's temperature range, peeling the split release liner as you roll it out and rolling laps firmly to activate the SBS adhesive. Keep the textured surface up for footing during the metal install.
Wear slip-resistant footwear and use roof anchors or fall protection when installing on pitched roofs.
Order G.A.P. WaterGuard SA MetalGuard HT underlayment for high-temperature protection under your next metal or tile roof.
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