ThermoShield HT Self-Adhered High-Temperature Roof Underlayment is a waterproof roofing membrane designed for use beneath metal roofing systems and other approved roof coverings. Engineered for high-temperature applications, it provides durable protection in critical roofing areas while offering a slip-resistant surface and up to 180 days of UV exposure.
ThermoShield HT Self-Adhered High-Temperature Roof Underlayment UNNEO
Manufactured in Ontario with stable lead times and predictable output. Direct access to production helps you get answers fast and keep projects on schedule.
We use premium German steel with durable coatings for long service life and consistent geometry. Better corrosion resistance and a clean, uniform finish.
ThermoShield HT Self-Adhered High-Temperature Roof Underlayment is a premium waterproof membrane designed to provide reliable protection beneath metal roofing systems and other approved roof coverings.
The self-adhered membrane creates a continuous protective layer and is suitable for use across the roof deck as well as in critical waterproofing areas, including valleys, ridges, skylights, roof penetrations, flashing areas, and transitions.
Designed for demanding roofing applications, ThermoShield HT provides high-temperature performance up to 250°F (121°C) and can remain exposed to UV for up to 180 days. Its slip-resistant walking surface helps provide safer handling during installation, while excellent nail sealability supports dependable protection around fasteners.
The membrane is supplied in a 39 in × 45 ft 11 in (1 m × 14 m) roll and provides approximately 140 ft² (13.0 m²) net coverage.
Technical Specifications
- Product Type: Self-Adhered High-Temperature Roof Underlayment
- Product: ThermoShield HT
- Roll Size: 39″ × 45′ 11″ (1 m × 14 m)
- Net Coverage: Approx. 140 ft² (13.0 m²)
- Gross Coverage: 105.5 ft² (14.0 m²)*
- Maximum Temperature: Up to 250°F (121°C)
- Water Protection: Self-adhered waterproof membrane
- UV Exposure: Up to 180 days
- Surface: Slip-resistant walking surface
- Fastener Protection: Excellent nail sealability
- Installation: Self-adhered
- Application Areas:
- Metal Roofing Systems
- Asphalt Shingle Roofs
- Valleys & Ridges
- Skylights
- Roof Penetrations
- Flashing & Transition Areas
- Other critical waterproofing areas
- Storage: Store in a dry, covered location between 40°F and 100°F (4°C–38°C); protect from prolonged exposure to weather and direct sunlight before installation.