Owens Corning Titanium PSU30 SA High-Temp Self-Adhered Underlayment, Gray, 2 Square Roll - image 1

Owens Corning Titanium PSU30 SA High-Temp Self-Adhered Underlayment, Gray, 2 Square Roll

Regular price $233.50

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Owens Corning Titanium PSU30 SA High-Temp Self-Adhered Underlayment, Gray, 2 Square Roll


Owens Corning Titanium PSU30 SA is a high-temperature, self-adhered steep slope roofing underlayment supplied as a Gray roll covering 2 squares. Each sell unit is one roll. It pairs with asphalt shingle roofing as a leak-barrier layer beneath the primary roof covering.


Key Features:

  • Self-adhered: Self-adhered membrane installs directly to the deck without fasteners as the primary attachment.
  • High-temp rated: Formulated as a high-temperature underlayment for use under steep slope roof coverings.
  • 2 square roll: Each roll covers 2 squares (200 sq. ft. nominal) of roof area.
  • Gray surfacing: Comes with a Gray mineral surface as supplied.
  • Steep slope use: Designed for steep slope roofing underlayment applications.
  • Leak barrier: Functions as a waterproofing underlayment layer beneath shingles.

Specifications Table:

Specification Details
Brand Owens Corning
Sell unit 1 roll, 2 square
Product line Titanium PSU30 SA
Material Self-adhered roofing underlayment membrane
Color / finish Gray
Coverage per unit 2 squares per roll (200 sq. ft.)
Available colors Gray
Available sizes 2 square per roll
Intended use Steep slope roofing underlayment, high-temperature self-adhered application

Coverage & How Much You Need:

One roll covers 2 squares, about 200 sq. ft. of roof deck. Divide total roof area by 2 to estimate rolls needed, allowing extra for laps at eaves, valleys and penetrations.

Fit and Compatibility:

Designed for use under steep slope roof coverings, including asphalt shingles, as part of an Owens Corning roofing system. Eave and valley detailing accessories are sold separately.


Frequently Asked Questions (FAQ):

Q: What is included in one order?
A: One roll of Owens Corning Titanium PSU30 SA self-adhered underlayment in Gray, covering 2 squares.


Q: How many rolls do I need?
A: Divide your roof area in squares by 2; each roll covers 2 squares before waste from laps and cut-ins.


Q: Does it need to be nailed down?
A: No, it is a self-adhered membrane that bonds to a properly prepared deck; always follow the manufacturer's installation instructions.


Q: Is it suitable for high-heat roofs?
A: Yes, it is designated a high-temperature self-adhered underlayment for steep slope applications.


Q: What color is the membrane?
A: The roll is supplied in Gray.


Expert Verdict — Reviewed by the SuperArbor Pro Desk

Self-adhered high-temp underlayments like PSU30 SA are the go-to choice at eaves, valleys and other water-critical zones, and in hot climates where standard SA membranes can slip. Prime and dust-free the deck, roll the membrane firmly to seat the adhesive, and keep laps to the manufacturer's stated overlap. Use full rolls on leak-prone areas and pair with a synthetic underlayment across the remaining field if the shingle manufacturer allows.

Install self-adhered membranes on dry surfaces in suitable temperatures, use fall protection on the roof, and follow local building codes for ice and water barrier coverage.


Order Owens Corning Titanium PSU30 SA high-temp self-adhered underlayment rolls for your next steep slope roofing job.

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All orders are reviewed before fulfillment. You are not charged until your order is approved and ready to ship — and you may cancel at any time before that at no cost.

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