Updated February 15, 2019 by Christopher Thomas

The 9 Best Synthetic Underlayments For Roofs

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Best High-End
Best Mid-Range
Best Inexpensive

This wiki has been updated 8 times since it was first published in November of 2018. Synthetic roofing is one of the great advancements in home building, and can last for decades when properly installed. The right materials are essential to ensure that happens. A good underlayment resists moisture, holds up over time, and provides a high-friction surface on which to work while installing the roof surface of your choice. Here are some of the most affordable and effective. When users buy our independently chosen editorial recommendations, we may earn commissions to help fund the Wiki. Skip to the best synthetic underlayment for roofs on Amazon.

9. Atlas WeatherMaster

8. Tyvek Protec 200

7. InterWrap UDL30

6. InterWrap Titanium UDL50

5. Tyvek Protec 120

4. Tyvek Protek 160

3. Grace Tri-Flex XT

2. InterWrap Titanium PSU30

1. InterWrap RhinoRoof

Editor's Notes

February 11, 2019:

Synthetic underlayments have been exploding in popularity over the last decade. They're particularly useful wherever the weather is routinely harsh, because they're generally less permeable than traditional, asphalt-impregnated felt. Keep in mind, though, that this also requires plenty of ventilation underneath the structure, to make up for their relative inability to breathe. InterWrap is undoubtedly one of the most relied-upon brands, and their 7-mil RhinoRoof is very well known. It strikes a good balance between vapor-proofing and permeability, and it's very lightweight, as well as pretty inexpensive. Their PSU30 is considerably thicker, and uses an adhesive coating to ensure ease of installation. Moving up their line, UDL30 and UDL50 are progressively more durable, though not necessary for many homes. Tyvek is a name ubiquitous to home-building, and their synthetic roofing products don't disappoint. From 120, through 160, to the 200 varieties, one of their products is almost certain to meet your needs. Grace Tri-Flex is another popular choice, and it's both resilient, as well as easy to install. Atlas's WeatherMaster is specifically designed for water- and ice-damming, and isn't commonly used across the majority of a job, because it's wildly expensive. Whichever you choose, be certain that it's installed by a practiced craftsman, as the quality of the job is every bit as important as the materials used.

Christopher Thomas
Last updated on February 15, 2019 by Christopher Thomas

Building PCs, remodeling, and cooking since he was young, quasi-renowned trumpeter Christopher Thomas traveled the USA performing at and organizing shows from an early age. His work experiences led him to open a catering company, eventually becoming a sous chef in several fine LA restaurants. He enjoys all sorts of barely necessary gadgets, specialty computing, cutting-edge video games, and modern social policy. He has given talks on debunking pseudoscience, the Dunning-Kruger effect, culinary technique, and traveling. After two decades of product and market research, Chris has a keen sense of what people want to know and how to explain it clearly. He delights in parsing complex subjects for anyone who will listen -- because teaching is the best way to ensure that you understand things yourself.

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