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Kirsch Building Products 48 in. x 125 ft. Sharkskin Ultra SA Self-Adhered Underlayment, 5-Square Roll
Regular price $423.67Kirsch Building Products 48 in. x 125 ft. Sharkskin Ultra SA Self-Adhered Underlayment, 5-Square Roll
Kirsch Sharkskin Ultra SA is a 48 in. x 125 ft. self-adhered roofing underlayment supplied as a 5-square roll. Each roll is the sell unit and weighs 65 lb. It installs under shingle, tile and metal roofs as a waterproofing layer.
Key Features:
- Self-adhered installation: Self-adhered backing eliminates the need for mechanical fastening of underlayment.
- 5 squares per roll: One 48 in. x 125 ft. roll covers 5 roofing squares.
- Wide 48 in. roll: The 48 in. width means fewer laps than 36 in. underlayments.
- Code listed: Listed to ICC-ES ESR-1708 with multiple code approvals including Florida Building Code and Miami-Dade HVHZ.
- Standard compliant: Meets ASTM D226 and other applicable standards for roofing underlayment.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Kirsch Building Products |
| Sell unit | 1 roll, 48 in. x 125 ft. (5 squares) |
| Product line | Sharkskin Ultra SA |
| Dimensions | 48 in. x 125 ft. |
| Coverage per unit | 5 squares per roll |
| Approvals | ICC-ES AC188 & AC48; ICC-ES ESR Report 1708; BOCA; SBCCI; Florida Building Code FL#8028; Miami-Dade HVHZ NOA 15-0421.10; TDI Approved; LEED; ASTM D226 |
| Warranty | Limited Warranty |
| Weight | 65 lb per roll |
| Intended use | Self-adhered roofing underlayment for shingle, tile and metal roof systems |
Coverage & How Much You Need:
One roll covers 5 roofing squares (500 sq. ft.). At 48 in. width, laps are minimized; follow the manufacturer's lap and exposure instructions to calculate exact rolls needed for the roof area.
Fit and Compatibility:
Use under compatible roof coverings such as asphalt shingles, tile, metal and synthetic systems as permitted by the roofing manufacturer. Pair with Kirsch or other system components as specified; fasteners are not required for the underlayment itself.
Frequently Asked Questions (FAQ):
Q: How much does one roll cover?
A: One 48 in. x 125 ft. roll covers 5 squares (500 sq. ft.) of roof area.
Q: Is it self-adhering?
A: Yes, Sharkskin Ultra SA is a self-adhered underlayment; no separate fastening of the membrane is required.
Q: What is the roll weight?
A: Each roll weighs 65 lb.
Q: Is it approved in high-velocity wind zones?
A: Yes, it carries a Miami-Dade HVHZ NOA 15-0421.10 and Florida Building Code FL#8028 approval.
Q: Does it meet ASTM standards?
A: Yes, it complies with ASTM D226 among other listed standards.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Self-adhered underlayment is the go-to for valleys, eaves and full ice-dam-prone roof areas because the sealed laps resist wind-driven rain. Confirm substrate temperature and primer requirements per the Kirsch install guide before peeling the release liner, since cold substrates hurt adhesion. The 48 in. width means fewer laps and faster coverage than 36 in. rolls on larger planes.
Self-adhered membranes can be slippery, especially on slopes or when wet; wear appropriate footwear and use fall protection during installation.
Order Kirsch Sharkskin Ultra SA 48 in. x 125 ft. self-adhered underlayment for reliable roof waterproofing.
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