03/28/2026
One of the questions we get asked most often: what underlayment do we recommend?
There are plenty of great products out there, but these two have stood the test of time, especially in our brutal desert heat:
1. Westlake Royal MetalSeal HT
This underlayment has a long, proven track record in hot climates. When installed correctly, it will protect your home well beyond its 30-year warranty. It also holds up for up to 6 months of direct sun exposure during construction, giving your project plenty of breathing room.
2. Sharkskin Ultra
Since hitting the market in 2006, Sharkskin Ultra has earned the #1 spot among many Arizona metal roofing contractors, and for good reason. With a 50-year warranty, heat resistance up to 280°F, and the flexibility to wrap tightly around fascia and roof penetrations, it's hard to beat. It also offers up to one full year of UV protection while exposed, making it ideal for longer construction timelines.
Whatever product you choose, make sure it's built to last. Your metal roof will still be protecting your home 50+ years from now, your underlayment needs to keep up.