Rubber Roofing vs Felt: Which Lasts Longer?
When it comes to choosing a flat roofing material, longevity is often one of the biggest deciding factors. Whether you're a homeowner replacing an ageing garage roof, a contractor specifying materials for a new project, or a business owner looking for a reliable roofing solution, investing in a roof that stands the test of time can save significant money and maintenance in the long run.
Two of the most common flat roofing materials in the UK are EPDM rubber roofing and traditional roofing felt. While both have their place in the industry, they differ considerably in terms of lifespan, durability, maintenance requirements and overall value.
In this guide, we'll compare EPDM vs felt roofing to help you decide which material offers the best long-term performance.
What is EPDM Roofing?
EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber membrane that has been used successfully on flat roofs for over 50 years. Originally developed for commercial buildings, it has become increasingly popular for domestic projects thanks to its exceptional durability, flexibility and ease of installation. EPDM generally offers a longer lifespan than standard felt roofing, although installation quality, drainage and the specification of each system all influence how long flat roofing lasts.
EPDM membranes are supplied in large sheets, meaning many roofs can be covered with very few seams, reducing the risk of leaks. This makes EPDM roofing a practical option for roofing in all shapes and sizes.
Common applications include:
- Home extensions
- Garages
- Garden rooms
- Sheds
- Commercial buildings
- Schools
- Apartment blocks
What is Felt Roofing?
Roofing felt has been a staple of flat roofing for decades. Modern felt systems have improved significantly from older bitumen felt roofs and are now typically installed as multi-layer systems using torch-on or self-adhesive techniques.
Felt remains popular because of its relatively low installation cost and familiarity among roofing contractors.
It is commonly used on:
- Garages
- Garden buildings
- Extensions
- Small commercial properties
Rubber Roofing vs Felt: Lifespan Comparison
One of the biggest differences between the two systems is how long they last, as outlined below.
|
Feature |
EPDM Rubber Roofing |
Felt Roofing |
|
Roof Lifespan |
40–50+ years |
15–25 years |
|
Manufacturer Warranties |
Often up to 20–25 years |
Typically 10–20 years |
|
UV Resistance |
Excellent |
Moderate |
|
Weather Resistance |
Excellent |
Good |
|
Maintenance |
Very Low |
Moderate |
While a well-installed felt roof can perform well for many years, EPDM is recognised across the roofing industry for offering a significantly longer service life than many felt systems.
For many property owners, that means replacing a felt roof 2-3 times during the lifespan of a single EPDM installation.
Rubber Roofing vs Felt: Which Roof Handles the UK Weather Better?
The British climate can be challenging for flat roofs. Flat roof weather resistance plays an important part in
A roofing system needs to withstand:
- Heavy rainfall
- Frost
- Snow
- High winds
- UV exposure
- Temperature fluctuations
EPDM Performance
EPDM remains flexible even during freezing temperatures.
Unlike many roofing materials, EPDM expands and contracts naturally with changing temperatures without becoming brittle.
It also offers excellent resistance to:
- Ozone
- UV rays
- Standing water
- Cracking
- Splitting
This makes it particularly suitable for UK weather conditions. However, good drainage remains essential: standing water should not be treated as normal simply because the membrane can withstand it.
Felt Performance
Modern felt roofing performs far better than older felt systems, but prolonged exposure to sunlight can dry out the bitumen over time.
As felt ages, it can become:
- Less flexible
- More prone to cracking
- Vulnerable around joints
- Susceptible to blistering
Regular inspections can help identify problems before they become serious. For both materials, precise roof detailing and secure edges are essential to preventing flat roof leaks.
EDPM vs Felt Roofing: Installation Differences
EPDM
One of EPDM's biggest advantages is the ability to install large single-piece membranes.
Fewer joins generally mean fewer opportunities for leaks.
Depending on the system used, EPDM is usually:
- Fully adhered
- Mechanically fixed
- Ballasted (on larger commercial roofs)
Installation is generally clean, with no naked flames required when using cold-applied adhesive systems.
Felt
Felt is normally installed in multiple layers.
Torch-on felt requires gas burners during installation, which introduces additional fire risks and requires experienced installers.
Self-adhesive systems are available but still involve more seams than a comparable EPDM roof.
If you’re replacing a felt roof with rubber, the existing roof deck, insulation and drainage should be assessed before installation. The chosen EPDM system guidelines will aid this preparation phase.
Rubber and Felt Roof Maintenance Requirements
Every flat roof benefits from regular inspection, but maintenance needs differ considerably. For owners comparing EPDM vs Felt maintenance, main considerations should be inspection frequency, seam condition and repair requirements.
EPDM Roof Maintenance
EPDM requires very little routine maintenance.
Typically, this involves:
- Removing leaves and debris
- Clearing gutters
- Checking roof outlets
- Annual visual inspections
Repairs, if required, are usually straightforward using compatible tapes or patch kits in accordance with manufacturing guidelines.
Felt Roof Maintenance
Felt roofs generally require more frequent inspection because seams and overlaps can deteriorate over time.
Owners should regularly check for:
- Cracks
- Blisters
- Loose edges
- Ponding water
- Damaged flashings
Prompt repairs can help extend the roof's service life. Recurring leaks, widespread cracking or repeated patch repairs may be signs a felt roof needs replacing with EPDM.
Rubber vs Felt Roof Durability: Resistance to Damage
EPDM
EPDM is extremely resistant to:
- UV degradation
- Ozone
- Weathering
- Thermal movement
It also has excellent elasticity, allowing it to stretch without cracking.
Felt
Modern felt provides good durability but remains more susceptible to:
- Heat damage
- UV ageing
- Surface cracking
- Mechanical damage around joints
Over many years, these issues can gradually reduce performance.
When choosing a durable flat roof covering, consider access requirements and the risk of impact damage alongside resistance to weathering.
Rubber Roofing vs Felt: Environmental Impact
Sustainability is becoming increasingly important within construction.
EPDM
EPDM offers several environmental benefits:
- Long service life
- Reduced replacement frequency
- Low maintenance
- Many products are recyclable at the end of their life
- Reduced waste over decades of use
Felt
Although modern felt products have improved environmentally, they generally require replacement sooner, resulting in more waste over the building's lifetime.
Rubber Roofing vs Felt: Cost vs Long-Term Value
One of the reasons felt remains popular is its lower initial installation cost.
However, choosing roofing solely on upfront price can sometimes prove more expensive over time.
For example:
Felt
- Often a lower initial cost
- Shorter lifespan
- More maintenance
- Earlier replacement
EPDM
- Higher initial investment
- Significantly longer lifespan
- Lower maintenance
- Better long-term value
When comparing cost remember to consider installation, maintenance, repairs and eventual replacement together.
So, is rubber roofing worth the extra cost? Many building owners find that EPDM's longevity makes it the more cost-effective option over the lifetime of the property.
Rubber Roofing or Felt: Which Roofing Material is Right for You?
When comparing rubber vs felt for your project balance the expected lifespan with your budget and how long you plan to use the building.
Choose EPDM if you want:
- Maximum lifespan
- Minimal maintenance
- Excellent weather resistance
- Long-term value
- Modern roofing performance
Choose felt if:
- Budget is your primary concern
- The roof is a short-term solution
- You prefer a traditional multi-layer roofing system
- The building has specific project requirements
Final Thoughts: Does Rubber Roofing Last Longer Than Felt
Both EPDM and felt roofing have earned their place in the roofing industry, but if longevity is your priority, EPDM is the clear winner.
With a potential lifespan of over 40 years, outstanding resistance to the UK's unpredictable weather, and minimal maintenance requirements, EPDM provides exceptional long-term value for homeowners and commercial property owners alike.
While felt remains a cost-effective solution, those looking to invest in a roof that delivers decades of reliable performance will often find EPDM to be the smarter choice. Whichever material you choose, correct installation and regular inspections are essential to achieving its expected lifespan.
At Flexible Roofing Supplies, we supply a comprehensive range of high-quality EPDM roofing products, accessories and installation essentials to help you complete your next flat roofing project with confidence. Whether you're a professional roofer or tackling a DIY installation, we’re here to help. Explore our EPDM rubber roofing range on our website or contact our team for any advice on choosing the right products for your job.
