Sharkskin Ultra SA Self-Adhered Roof Underlayment White 5 Square Roll

Sharkskin Ultra SA is a self-adhered synthetic roof underlayment sold here as a 5-square roll for metal, tile, slate, and asphalt roof assemblies that need a severe-weather secondary water barrier. It is built for contractors who care about high-temperature performance, cold-weather adhesion, and UV exposure time during staged installs.

Key Specs

• Model / MPN: PF-ULTRA SA
• Brand: Sharkskin
• Type: Self-adhered synthetic roof underlayment
• Roll coverage: 5 squares / 500 sq ft nominal
• Roll width: 48 in
• Color: Light gray/white
• Temperature range: -40°F to 280°F performance range in manufacturer literature
• Cold install: Sticks down to 10°F without primer in manufacturer literature
• UV exposure: Up to 12 months
• Sell unit: Roll

Coverage & How Much You Need

One 5-square roll is nominally 500 sq ft before laps and waste. Order extra for valleys, eaves, rakes, penetrations, and overlap requirements.

• Coverage is nominal roll area; overlaps and openings reduce installed coverage.
• Add project waste for valleys, corners, penetrations, windows, doors, and staging damage.

Compatibility / Fitment

Use under compatible metal, tile, slate, or asphalt shingle systems when the roof assembly and local code allow a self-adhered underlayment. Do NOT treat it as the finished roof, and do not omit required deck prep, laps, fastening, or ventilation details from the manufacturer instructions.

FAQs

How many square feet are in the roll?

This candidate is sold as a 5-square roll, which is nominally 500 sq ft before laps and job waste. For ordering, add waste for overlaps, valleys, eaves, hips, rakes, and penetrations.

Can it be installed in cold weather?

Manufacturer literature says Sharkskin Ultra SA can stick down to 10°F without primer, but deck condition, cleanliness, and moisture still matter. Follow the installation instructions for substrate prep.

How long can it stay exposed?

Manufacturer literature lists up to 12 months of UV resistance. That is exposure resistance, not permission to delay the final roof indefinitely; follow the roof-system schedule and warranty rules.

Which roof systems is it for?

It is positioned for metal, tile, slate, and asphalt roof systems as a secondary water barrier or ice-barrier layer. Confirm the primary roof manufacturer’s underlayment requirements before ordering.

Is it asphalt-based?

Sharkskin literature says this product contains no asphalt and no VOCs. That distinction matters for crews comparing synthetic peel-and-stick products to asphaltic ice-and-water membranes.

Underlayment installation is fall-hazard roof work. Use fall protection, dry walking practices, and manufacturer slip-resistance guidance, especially in wet or windy conditions.

Product Expert Notes

A strong B2B underlayment listing because the differentiators are specific: self-adhered, 5-square roll, cold adhesion, high-temp range, UV exposure, and roof-system compatibility.