Polyglass Polystick MTS Self-Adhering Underlayment, 2 Squares per Roll, Black - image 1

Polyglass Polystick MTS Self-Adhering Underlayment, 2 Squares per Roll, Black

Regular price $173.00

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Polyglass Polystick MTS Self-Adhering Underlayment, 2 Squares per Roll, Black


Polyglass Polystick MTS is a black underlayment roll supplied 2 squares per roll for steep-slope roofing. It installs as a waterproofing layer beneath shingles, tile or metal roof coverings. Order enough rolls to cover your roof area plus lap allowance.


Key Features:

  • Self-adhering: MTS underlayment is part of Polyglass's self-adhering membrane line for underlayment use.
  • Steep slope: Classified for steep-slope roofing underlayment applications.
  • Two square roll: Each roll provides 2 squares (200 sq. ft.) of coverage.
  • Black finish: Supplied in black.
  • Beneath finish roofing: Installed under shingle, tile or metal finish roof coverings.

Specifications Table:

Specification Details
Brand Polyglass
Sell unit 1 roll, 2 squares
Product line Steep Slope Roofing Underlayment
Available colors ['Black']
Coverage per unit 2 squares per roll
Intended use Steep-slope roofing underlayment beneath finish roof coverings
Application method Self-adhering

Coverage & How Much You Need:

One roll covers 2 squares (200 sq. ft.). Estimate rolls by roof area and add extra for laps, valleys and penetrations.

Fit and Compatibility:

Use beneath compatible steep-slope finish coverings such as shingle, tile or metal; finish roofing materials are sold separately.


Frequently Asked Questions (FAQ):

Q: What is included?
A: One roll of Polyglass Polystick MTS underlayment in black, covering 2 squares.


Q: How much does a roll cover?
A: Approximately 200 sq. ft. (2 squares) before lap and waste allowances.


Q: What is it used for?
A: It serves as underlayment under steep-slope roof coverings such as shingles, tile or metal.


Q: How is it installed?
A: It is applied as a self-adhering membrane following the manufacturer's installation instructions.


Q: What temperature should I install at?
A: Follow the manufacturer's installation temperature guidance for self-adhering membranes; it is not stated in the available sources.


Expert Verdict — Reviewed by the SuperArbor Pro Desk

Self-adhering MTS-type underlayments are widely used at eaves, valleys and vulnerable details, or across the full deck. Ensure the deck is clean, dry and primed where required, roll the membrane firmly to bond, and lap per the manufacturer's directions.

Self-adhering membranes become slippery, especially when warm; wear appropriate footwear and use fall protection on the roof.


Order Polyglass Polystick MTS underlayment rolls today for dependable steep-slope roof protection.

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Subject to Approval & Availability
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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