Synthetic Roof Underlayment As House Wrap

Roof underlayment acts as a secondary water barrier under shingles, protecting the house from leaks. It also serves as a weather barrier around the home like house wrap, keeping out drafts and moisture before siding is installed. Roofs and walls work together to protect homes. An often overlooked product, synthetic roof underlayment, acts as a barrier for both. It resists water under shingles but also air and moisture behind siding, like a house wrap. This multi-use material maximizes leak and weather protection. Synthetic underlayment is an improvement over felt paper. It lasts longer under shingles. The woven or spunbond fabric is also permeable. So it resists liquid water but lets water vapor pass through. This permeability is crucial for house wrap performance.

Considerations For Metal Roofing Installation

When installing metal roofing, consider the slope of your roof. Ensure it’s suitable for the chosen metal roofing material to prevent water pooling. Proper slope promotes water drainage, avoiding leaks.

Types Of Synthetic Roof Underlayment

Synthetic roof underlayment is a popular alternative to traditional felt underlayment in roofing applications. It offers various advantages such as better tear resistance, enhanced durability, and improved weather protection. Here are some common types of synthetic roof underlayment:

Frequently Asked Questions

Can Roof Underlayment Be Used On Walls? No, roof underlayment is not suitable for use on walls. It’s specifically designed for roofing applications to provide water resistance and is not engineered to perform effectively on vertical surfaces. What Are The Disadvantages Of Synthetic Roof Underlayment? Synthetic roof underlayment can be more expensive than traditional felt. It may also be prone to tearing if not handled carefully during installation. Is Roof Underlayment The Same As Tar Paper? No, roof underlayment is not the same as tar paper. While tar paper was traditionally used, modern underlayment materials include synthetic polymers for improved durability and performance.


Synthetic underlayment streamlines roof and wall weatherization. Unlike felt, it handles exposure before shingles are installed. It also replaces a separate house wrap step. The durability and permeability aid performance. Multi-use synthetic underlayment simplifies water and air sealing. Choosing the right synthetic underlayment is crucial. Look for UV resistance for exposure during roofing. Ensure proper permeability ratings for house wrap use. Get a durable material rated for high wind and foot traffic. Then this single product can provide leak protection as both a roof underlayment and an effective house wrap.