Underlayment
The Ultimate Foundation for Your Metal Roof in Southern Arizona
Thunder Mountain Metal Sales
Premium Roofnado™ Synthetic Underlayment
At Thunder Mountain Metal Sales, we know that a durable metal roof is only as good as the underlayment beneath it. In the extreme heat of the Tucson desert, standard roofing felt easily breaks down, becoming brittle and prone to failure. That’s why we proudly stock Roofnado™ High-Temperature Synthetic Underlayments.
Engineered specifically to handle the intense thermal load of metal panels, Roofnado products boast a massive temperature performance range of -40°F to 240°F, ensuring your roof deck stays protected from moisture, storms, and extreme heat for decades.
Explore our in-stock Roofnado underlayment options below:
LapLock™ HD60 PSU - Heavy Duty Peel & Stick
When you need the absolute maximum protection, LapLock™ HD60 is unmatched in strength and lap sealing performance
- Unrivaled Durability: Features a massive 60 mil thickness and five layers of engineered protection
- GripLap™ Technology: Proprietary advanced lap sealing technology makes installations faster, easier, and incredibly secure
- Extreme Heat Rated: High-temp self-adhered (peel and stick) design easily handles up to 240°F under metal panels
- Safety First: Unmatched steep-slope walkability thanks to a mechanical, slip-resistant, micro-etched surface
- Specs: Sold in 2 Square rolls (36″ x 67′). Backed by a Limited Lifetime Warranty and rated for 180 days of UV exposure
AnchorDeck™ PSU - High Temp Peel & Stick
AnchorDeck™ PSU is the ideal self-adhered underlayment for high-temperature flow resistance, providing premium protection from wind-driven water and monsoon storms.
- Strong Deck Grip: Rubberized adhesion technology combined with a split-release liner provides an incredibly strong grip while making installation highly productive.
- Walkable Surface: Features a mechanical slip-resistant walking surface for superior steep-slope walkability for roofers.
- Extreme Heat Rated: Dependable performance from -40°F to 240°F.
- Specs: Sold in 2 Square rolls (36″ x 67′). Backed by a 20-year warranty and rated for 90 days of UV exposure.
StormTread™ & StormTread™ XW - Mechanically Attached
Roofnado™ StormTread is our top-of-the-line, next-generation mechanically attached synthetic underlayment.
- No Blow-Offs: Uniquely designed coating technology allows the underlayment to anchor to the deck prior to fastening, ensuring absolutely no stretching around fasteners and no blow-offs.
- All-Weather Flexibility: Remains flexible and easy to install whether you are in freezing temperatures or working in the extreme Tucson summer heat.
- Superior Safety: Features an advanced micro-etched surface technology for exceptional steep-slope walkability.
- Fire Rated: Boasts a Class A fire rating (ASTM E108).
- Specs: Sold in lightweight, highly efficient 10 Square rolls (48″ x 250′). Backed by a Limited Lifetime Warranty and rated for 180 days of UV exposure.
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Thunder Mountain Metal Sales
Why Choose Us
100% Satisfaction
At Thunder Mountain Metal Sales, your complete satisfaction is our goal. We stand behind every American-made metal product, ensuring you get the high-quality materials for your Tucson project. Your trust is paramount.
Upfront Pricing
No surprises, just clear and honest costs. We provide upfront pricing for all our metal roofing and siding. Get accurate quotes to budget effectively for your Tucson construction, knowing what to expect.
Quality Workmanship
We don’t just sell metal; we sell quality workmanship built to last. Our American-made metal panels and custom trim are manufactured to the highest standards, offering superior durability for any Tucson application. Choose us for long-lasting, high-performance materials.