Product Overview

A roofing underlayment is a membrane that prevents water penetration. Compared to exterior roof-covering materials like metal or shingles, underlayment is the secondary barrier to moisture penetration. River Supply offers Synthetic Underlayment that has up to a 50 year warranty, traditional felt underlayment as well as self-adhered, high temperature spec driven underlayments from most of the top industry manufacturers.


Manufactures We Represent

To place an order or request a quote for Underlayments, please contact River Supply at 717-927-1555 or submit a Contact Form.