Understanding EPDM Roofing Thickness Options: 1 Minute to Choosing the Right EPDM Roofing Thickness

EPDM roofing, known for its durability and flexibility, is a popular choice for flat and low-slope roofs in both residential and commercial applications. One of the most important considerations when selecting EPDM is its thickness, as it directly impacts performance, longevity, and cost. EPDM membrane thickness typically ranges from 45 mil (1.1 mm) and 60 mil (1.5 mm) up to 90 mil (2.3 mm). Thicker membranes generally offer better resistance against punctures, tears, and weathering, while thinner options can be more budget-friendly and easier to install in certain situations.

The right thickness depends on several factors: building location, foot traffic, weather conditions, and installation methods. For structures exposed to moderate weather and minimal foot traffic, 45 mil may be sufficient. However, if the roof will endure frequent movement or extreme climates, opting for 60 mil or 90 mil is advisable for increased durability and longevity. Many professionals also weigh the balance between initial investment and long-term savings, since thicker EPDM may reduce repairs and replacements over time.

As a designer, I always recommend thoughtfully evaluating the space's functional needs and potential future usage when selecting materials. For clients planning rooftop features or green roofs, a thicker EPDM layer can complement the overall design by ensuring a solid waterproof base—just as a carefully chosen layout supports both aesthetics and utility in a home renovation. If you're considering a full remodel or building new spaces, starting with an accurate floor plan and considering material specification for every surface is essential. Tools like a 2D Floor Planner not only visualize spatial arrangements but also help architects and homeowners coordinate precise measurements—including roofing thickness—with ease.

Tips 1:

Always consult with a roofing specialist when determining EPDM thickness for your project. They can assess environmental factors and building requirements to guide the best choice for durability and cost-effectiveness.

FAQ

Q: What is the standard EPDM roofing thickness?

A: Common EPDM membrane thicknesses include 45 mil, 60 mil, and 90 mil, with 60 mil being the most popular for commercial and residential roofing.

Q: Does thicker EPDM last longer than thinner types?

A: Yes, thicker EPDM membranes generally offer better resistance to wear and can last longer, especially in areas with frequent foot traffic or harsh climates.

Q: Is a thicker EPDM membrane harder to install?

A: Thicker membranes are slightly heavier and may require more skill and effort to install, but the added durability often offsets these challenges.

Q: How do I decide what thickness is suitable for my roof?

A: Consider factors such as roof usage, climate, anticipated foot traffic, and budget. Consulting a roofing expert is highly recommended.

Q: Can EPDM be used on pitched roofs?

A: EPDM is most commonly used on flat or low-slope roofs but may be adapted for gently pitched roofs with professional guidance and proper installation techniques.