ALCO Roof Coatings & Construction Specialty Producs to be discontinued.

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ALCO Updates

New Product

ALCO Shield Black MAG Underlayment
. More...

Installation Guide

ALCO Shield Detail Drawings
ALCO Shield Underlayment Installation Instructions & Drawings
are now available Online. Click Here to View...

Product Highlights

Granular+ Underlayment

The NEW & Improved ALCO Shield GRANULAR+ is now available. More...


ALCO Roof Repair Tape
24/7 Roof Repair Tape - Now available - Leak and Seam Repair Tape for TPO, EPDM, and Metal with Ultra Aggressive Sealability. More...

ALCO Warranty Information


Call Toll Free 
800-323-0029 for information on where to buy ALCO Roof Products.


ALCO Poly-S polyster matDESCRIPTION

ALCO POLY-S is a stitchbond polyester mat designed to have exceptional tensile, tear and elongation properties. Because of its natural softness, it conform easily to irregular surfaces, such as the substrate of gravel roofs. Most polyester mats have to be light enough (1.6 – 2.0 Oz/Sq Yd) to conform to the unevenness of gravel roofs, but POLY-S will conform extremely well while still providing the superior strength of 3 Oz/Sq Yd material.


  • Excellent reinforcing properties
  • Compatible with both solvent and emulsion coatings
  • Clean and easy to handle
  • No fiber breakage or dusting in handling
  • Conforms easily to irregular surfaces
  • High resistance to thermal shock
  • Lightweight
  • Highly penetrable, eliminating air pockets
  • Exceptional tensile, tear and elongation properties


Excellent for one-, two-, or three-ply cold process roofing systems as used in the ALCO CAP System.


Be sure roof to be coated is swept clean of all debris. All repairs should be done prior to applying POLY-S.


Spray, brush or squeegee ALCO adhesive coating on roof and before coating begins to cure, roll out the POLLY-S and imbed into coating. Then top coat with roof coating. Remember to lap accordingly: 3” side lap and 6” end lap. It may be necessary to brush polyester mat to ensure complete adhesion.

Note: This material is part of the ALCO CAP System (New Roof, Roof Membrane and Metal-Ply Roof). Call your sales representative for further information.


3 Oz/Square Yard


40” x 324 LF Roll 25/Pallet

> Download/Print ALCO POLY-S Data Sheet

Mafe in USA - Warranty

ALCO Green Products

ALCO CAP is the perfect solution to cost-effective
and environmentally sustainable roof restoration.


Contact us for more information on this and other ALCO-GREEN products