Categories: roofing

Synthetic vs. Felt Roofing Underlayment

Choosing the right roofing underlayment is crucial for the longevity and protection of your roof. During roof replacement or installation, homeowners typically choose between felt and synthetic underlayment. In this post, we discuss the advantages and drawbacks of each underlayment material to help you make the best choice.

Key Factors to Consider

The roofing underlayment is the primary layer that sits directly between your roof’s deck and the external roofing material. It’s a vital barrier against moisture and a secondary defense against harsh weather elements.

Felt Roofing Underlayment

Felt underlayment, often saturated with asphalt to enhance water resistance, is a time-honored choice. It comes in two grades: #15 and #30, with #30 being the thicker and more durable option. Its higher absorbency is beneficial in holding moisture. However, its weight and susceptibility to tearing under harsh weather reduce its advantage over synthetic underlayment.

Synthetic Underlayment

Synthetic underlayment is manufactured from polymers, such as polyethylene or polypropylene. It is known for its exceptional durability and tear resistance. This material is also lightweight, making it a favorite among roofing professionals. It often comes in larger rolls, which can reduce labor costs and installation time.

Durability and Performance

Synthetic underlayment provides superior performance in coastal climates. It also has better resistance to UV rays, moisture and tearing. Unlike its felt counterpart, it can endure prolonged exposure without degradation during roof installation.

Installation

Due to its lighter weight and larger roll size, synthetic underlayment can be more efficient to install. It can be particularly crucial for solar roofing companies that need a reliable base to install heavy solar panels without causing undue strain on the roofing structure.

Cost-Effectiveness

Felt underlayment costs less upfront. However, considering maintenance and potential longevity, synthetic underlayment may provide better long-term value. Its durability also means that the need for roof repairs could be reduced, offering peace of mind in the face of unpredictable weather.

Choosing the Right Underlayment for Your Home

While synthetic underlayment boasts robust features, the best choice still depends on your specific needs, budget constraints, and preferences. For those prioritizing cost above all else, high-quality felt underlayment might suffice. However, synthetic is an excellent option for those looking to invest in longevity and performance.

LePage and Sons Roofing LLC provides personalized recommendations and ensures appropriate solutions to your roofing needs. We guarantee quality work and excellent customer service. Call us at (508) 295-6483 or fill out our contact form to schedule a consultation.

LePage and Sons Roofing

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