Advantage-30 Synthetic Roof Underlayment

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WaterBlock Advantage-30 is designed and manufactured to provide a superior roofing underlayment compared to both asphalt felt products and other synthetic underlayments.

Installation Guides

The WaterBlock Installation Guides will guide you step by step how to install your Window & Door flashing.

  1. General Installation Guide
  2. Create Custom Installation
  3. Recessed Install Guide

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FAQ's & Tech Bulletins

Here you will find answers to commonly asked questions regarding all of the WaterBlock family of products. If you have a question you would like answered and you do not see it below please contact us with your questions.

  1. Technical Bulletin - 07-13-2009
    WaterBlock RU-200 Roofing Underlayment, Addendum to installation instructions dated 11-01-08