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 Shield 15 Synthetic
ALCO Shield 15 Synthetic
ALCO Shield 15 Synthetic Application
ALCO Shield 15 Synthetic
Click to view pattern

Improved Overall Performance

Providing better water penetration resistance, fastener holdout and overall durability than traditional Asphalt Saturated Felt, ALCO Shield 15 Synthethic underlayment is measurably stronger than traditional Asphalt Saturated Felt. ALCO Shield Synthetic is designed to resist tearing and blow-offs. The lightweight ALCO Shield 15 Synthetic physical properties also provide for easier installation.

The ALCO Shield 1,000 SF of material per roll provides measurable cost savings in both material and labor, and is a superior installation as compared to Asphalt Saturated Felt underlayment products.

Features & Benefits

ALCO Shield 15 Synthetic is a high-strength, light weight, engineered synthetic roofing underlayment that saves labor, time, and installed costs, when compared to Standard No. 15 Saturated Felt underlayments.


  • Less than 1/3 the weight, per square, of current Standard No.15 Saturated Felt (ALCO Shield 15 Synthetic weighs only 2 lbs. per square)

  • Reinforced nail-strip is engineered to speed installation and protect against tearing away

  • Unique surface construction is engineered for durability and walkability for the installer

  • Resists damage from weather exposure better than standard No. 15 felt (30 days maximum exposure, not a permanent “Dry-In” product)

  • 25% of the number of rolls to carry onto the roof - with 2-1/2 times the coverage per roll

  • Full ALCO Products Warranty

> Download PDF Data/Technical Specifications Sheet

> Click to view ASTM Test Results Chart

Compare the distinct difference for yourself:

Mafe in USA - Warranty