EPDM vs Felt Roofing: Which Flat Roofing System Is Best for Your Property?

When it comes to replacing or installing a flat roof, one of the most common questions homeowners ask is whether they should choose EPDM rubber roofing or traditional felt roofing. Both systems have their advantages, but the right choice often depends on your property, budget, and long-term expectations.

At Treetop Roofing, we regularly install and repair both EPDM and felt roofs across South Wales, helping homeowners find a solution that offers durability, value for money, and peace of mind. In this guide, we'll explain the key differences between the two systems and help you understand which may be the best fit for your home.

What Is EPDM Roofing?

EPDM stands for Ethylene Propylene Diene Monomer, a synthetic rubber membrane designed specifically for flat roofing applications. It has become increasingly popular in recent years due to its impressive lifespan and low maintenance requirements.

EPDM is typically supplied in large sheets, allowing many flat roofs to be covered with very few seams. Fewer joints mean fewer potential weak points where water could eventually penetrate.

Benefits of EPDM Roofing

Exceptional Longevity

A professionally installed EPDM roof can last 30 to 50 years, making it one of the most durable flat roofing materials available today.

Weather Resistance

South Wales experiences a wide range of weather conditions throughout the year, from heavy rainfall and strong winds to occasional freezing temperatures. EPDM remains flexible during cold weather and is highly resistant to UV exposure, reducing the risk of cracking and premature ageing.

Minimal Maintenance

Once installed correctly, EPDM roofs generally require very little ongoing maintenance beyond periodic inspections and keeping drainage outlets clear.

Environmentally Friendly

EPDM is considered a sustainable roofing option due to its long service life and recyclable properties.

What Is Felt Roofing?

Modern felt roofing has come a long way from older systems that homeowners may remember from decades ago. Today's high-performance torch-on felt roofs are manufactured using reinforced bitumen layers that provide significantly improved durability and weather protection.

Felt roofing remains a popular choice for garages, extensions, porches and outbuildings.

Benefits of Felt Roofing

Cost-Effective Installation

Felt roofing often has a lower initial installation cost compared to EPDM, making it attractive for homeowners working within a tighter budget.

Multiple Protective Layers

Most modern felt systems consist of several bonded layers that create a strong waterproof barrier.

Easy to Repair

If damage occurs, felt roofs can often be repaired quickly without replacing the entire roofing system.

Suitable for Various Property Types

Felt roofing can perform very well when installed correctly and maintained over time.

EPDM vs Felt: A Side-by-Side Comparison

Feature	EPDM Roofing	Felt Roofing
Average Lifespan	30–50 Years	15–25 Years
UV Resistance	Excellent	Good
Maintenance	Very Low	Moderate
Installation Cost	Higher Initial Cost	Lower Initial Cost
Repairs	Less Frequently Needed	Easier Spot Repairs
Appearance	Clean Modern Finish	Traditional Flat Roof Look

Which Roofing System Should You Choose?

There is no single answer that suits every property.

EPDM may be the better option if you are looking for a long-term investment, want minimal maintenance, and prefer a roofing system capable of withstanding decades of changing weather conditions.

Felt roofing may be more suitable if you require a dependable flat roof solution while keeping installation costs lower, particularly for garages, sheds, or smaller extensions.

The most important factor is ensuring the roof is installed correctly by experienced roofing professionals. Even the highest quality materials can fail prematurely if poor workmanship is involved.

Expert Advice from Tree Top Roofing

At Tree Top Roofing, we understand that replacing a flat roof is an important investment. We take the time to assess each property individually, explain the available options clearly, and recommend a roofing system based on your needs rather than a one-size-fits-all approach.

Whether you are considering an EPDM roof for a modern extension or a high-performance felt system for a garage conversion, our team is committed to delivering workmanship you can rely on.

If you would like honest advice about your flat roofing project, we offer a 20 year guarantee, Contact Us today to arrange a free inspection and no-obligation quotation.