Is Self Adhered Underlayment Better than Synthetic Underlayment for My Roof?

Both self-adhered and synthetic underlayment have their advantages and disadvantages, and which one is better for your roof will depend on a variety of factors. Here are some things to consider:

Self-Adhered Underlayment


  • Provides excellent protection against water penetration, since it forms a watertight seal around fasteners and other roof penetrations.
  • Provides a good secondary layer of protection against leaks in case the shingles are damaged or compromised.
  • Easy to install and requires no special tools or equipment.


  • More expensive than synthetic underlayment.
  • Heavier and thicker than synthetic underlayment, which can make it more difficult to handle and install.
  • More prone to tearing and puncturing during installation.

Synthetic Underlayment:


  • Lightweight and easy to handle and install.
  • Less expensive than self-adhered underlayment.
  • Provides good traction for workers during installation.
  • Resistant to tearing and puncturing during installation.


  • Not as watertight as self-adhered underlayment, since it relies on overlapping seams to provide protection against water penetration.
  • Can be less durable over time than self-adhered underlayment, especially in areas with high winds or extreme weather conditions.

Ultimately, the choice between self-adhered and synthetic underlayment will depend on your specific needs and budget. If you live in an area with high winds or extreme weather conditions, or if you are looking for the best possible protection against water penetration, self-adhered underlayment may be the better choice. However, if you are looking for a more affordable and easy-to-install option that still provides good protection, synthetic underlayment may be the way to go.

It’s always a good idea to consult with a professional roofer to determine which underlayment will be best for your specific roof and needs.

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