Backed by the science of one of the most trusted names in building innovation,
DuPont™ RoofLiner with Elvaloy® delivers enhanced performance and offers
unique advantages over roofing felt, such as:

• Better protection against roof leaks

• Lightweight for easy handling and installation

• Suitable for use with all types of roof coverings identified by ICC-ES AC 188
(except in Section 3.3)*

• Ideal for sloped unrated residential new construction and re-roofing assemblies

• 20-Year Product Replacement Residential Limited Warranty for Builders, General 
Contractors or Professional Installers

With 10 squares in every roll, DuPont™ RoofLiner with Elvaloy® allows for
maximum roof coverage and efficient installation—making it easier to install
than roofing felt. As a result, there are fewer overlaps, seams and fasteners,
which helps reduce both labor and waste.

DuPont™ RoofLiner with Elvaloy® also offers superior tear- and UV-resistance,
with improved water hold-out and better mold resistance than typical roofing felt. 
Superior durability, combined with higher thermal stability than roofing felt enables
DuPont™ RoofLiner to stand up to the toughest conditions.

* For complete details regarding what roof coverings are identified by ICC-ES AC188,
visit www.icc-es.org.

• Introduction
• 20-Year Limited Warranty
• Technical Information
• Where to Buy