Fiberglass Mat for Roofing Shingles

Fiberglass mats provide excellent dimensional stability and great mechanical properties boosting the overall tear strength of roofing shingles. As fiberglass mat products are strong and thin at the same time, it makes the substrate an excellent candidate for asphalt coating, allows superior tape adhesion on the back side of a roofing shingle and improves wind uplift resistance.

Ellen Reed
Product Manager

"Johns Manville offers Evalith^® fiberglass mats in a variety of widths and lengths. The uniformity in both the machine and cross machine direction provides a consistent product that ensures consistent mechanical properties of every single roofing shingle. The resin utilized in the binder package for the nonwoven product is designed to provide excellent strength and to limit fiber shedding during shingle manufacturing."

What is a Fiberglass Mat?

A fiberglass mat (also called glass veil or glass nonwoven) is a flat fabric composed of chopped fiberglass oriented in a random pattern and bonded together. Originally invented to replace cardboard in waterproofing membranes, fiberglass mats have long since conquered additional applications such as commercial and residential construction, energy storage and automotive. Fiberglass mat can be tailormade to fit the properties the end applications require by adjusting for instance the fiberglass (glass type, fiber sizing, fiber length, fiber diameter, fiber mixture), the binder systems, the mat thickness, and the mat density. Fiberglass mat is sold in rolls of various widths and lengths. Most of the glass fiber mats manufactured worldwide are produced on similar (but not identical) machines to those used in the paper industry.

Rui Ferreira
R&D Director

"Did you know that 75% of homes in the U.S. use fiberglass roofing shingles?"

ISO Certificates

Safe Use Instructions

Scott Coons
Chief Sustainability Officer

"Fiberglass reinforced asphalt shingles typically last up to 20 years on a roof due to its mechanical advantages combating extreme weather. This durability avoids early repairs or replacements - thus saving unnecessary raw material consumption and transportation."