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 Products


ALCO Shield™ SMOOTH Ice and Water Protector is used as a shingle underlayment on critical areas such as eaves, valleys, ridges, dormers and skylights. ALCO Shield SMOOTH protects roofing structures and the interior from water penetration caused by ice dams, wind driven rain seepage from around fasteners.

ALCO Shield SMOOTH is a polymer modified asphalt membrane, fiberglass reinforced, with a smooth, skid resistant, non-abrasive film surface.


  • Self-adhering, but initially repositionable for easy installation
  • High tack back adhesive provides for all season installation
  • Lightly textured surface provides the anti-skid feature to keep workers safe
  • Exceptional manufacturing process and quality control for a consistent product
  • Meets or exceed industry standards and residential/commercial Model Building Codes
  • Made in Detroit - USA


ALCO Shield Smooth Ice & Water Protector
The ALCO SHIELD SMOOTH underlayment product offers ease-of-handling and the highest standards of manufacturing.



  • Protects structure from water seepage caused by wind driven rain, ice dams and around shingle fasteners.
  • Self-Sealing: Seals around nails, staples and screws
  • Self-Adhering: Bonds directly to the roof deck sheathing
  • May be used under asphalt shingles, metal roofing, slate shingles or tile roofing

> View Installation Instructions & Detailed Drawings

> Download PDF Data/Technical Specifications Sheet

> Architectural Specifications