Not sure which single-ply membrane thickness is right for your roof? Learn the pros and cons of 45 mil, 60 mil, and 80+ mil options and which thickness is best for Georgia homes.

What thickness of membrane should I choose?

Single Ply Roofing FAQs
November 10, 2025•2 min read

What Thickness of Single-Ply Roofing Membrane Should You Choose?

For most Georgia homeowners, 60 mil or 80 mil membranes are the best choice for durability, weather resistance, and long-term value.

Here’s a breakdown of your options:

1. 45 mil membranes

  • Lower cost upfront

  • Suitable for low-traffic or short-term applications

  • Not ideal for heavy foot traffic or long service life

2. 60 mil membranes

  • Popular standard for both homes and commercial buildings

  • Offers solid puncture resistance and weather protection

  • Recommended for moderate to high foot traffic areas

3. 80+ mil membranes

  • Premium durability and impact resistance

  • Ideal for flat roofs with rooftop equipment or frequent access

  • Longer warranties and reduced risk of future damage

Why does thickness matter?

  • Thicker membranes resist punctures and tears better

  • They last longer, especially under Georgia’s heat and storms

  • Added upfront cost is offset by fewer repairs and longer life

What do roofing experts recommend?

Roof Nuts recommends 60 mil or higher for most homeowners. It's a smart investment if you plan to live in your home for more than 10 years or want minimal roof maintenance.

FAQs

Is a thicker single-ply membrane worth the cost?
Yes. Thicker membranes (60 mil or 80 mil) provide better protection and last longer. You’ll save on future repairs and get a better return on investment.

What’s the most common thickness for TPO or EPDM roofs?
60 mil is the industry standard for durability and cost-efficiency.

Can I walk on a single-ply roof?
Yes, but thinner membranes like 45 mil are more prone to punctures. Use walkway pads for protection, especially with 60 mil or thinner membranes.

How long does a 60 mil TPO or EPDM roof last?
Typically 20–30 years with proper installation and maintenance.

Need help choosing the right system?

Call Roof Nuts at 404-476-6851 or visit RoofNutsGA.com to schedule a free consultation. We serve homeowners across Atlanta, Augusta, Macon, and more.

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