EPDM Rubber Roofing in Cumbria | Installation, Cost, Time, & Benefits

EPDM rubber roofing is a durable, flexible, and weather-resistant solution, ideal for the varied and often harsh climate of Cumbria. Whether you’re covering a flat roof on a garage, extension, or garden outbuilding, EPDM offers long-lasting protection against heavy rain, wind, and occasional snow, making it a practical choice for both DIY enthusiasts and professional installations.

Installation of an EPDM roof involves careful preparation, from cleaning and inspecting the roof deck to correctly applying adhesives, primers, tapes, and trims. Factors like roof size, complexity, and local weather conditions can affect the installation timeline, which ranges from a single day for small sheds to several days for larger or more complex roofs. Homeowners should follow key dos and don’ts to ensure proper adhesion, prevent leaks, and maintain the roof’s performance over its lifetime.

Cost is influenced by materials, labour, roof access, and additional work such as insulation or deck repairs, with typical installed prices ranging from around £1,000 for small garden sheds to several thousand pounds for larger projects.

How to Install an EPDM Roof in Cumbria?

EPDM, or ethylene propylene diene monomer, is a highly durable synthetic rubber material commonly used for flat roofing. Popular for its longevity, cost-effectiveness, and flexibility, EPDM is ideal for Cumbria’s weather, with roofs enduring heavy rain, strong winds, and occasional snow. With the right installation and care, an EPDM roof can last up to 50 years, making it a practical solution for both traditional stone cottages and modern extensions across the Lake District.

Here’s the process of installing an EPDM roof safely and effectively, including all the materials and tools you’ll need.

What You’ll Need

• EPDM rubber membrane

• Broom and soft brush

• Angle grinder or mortar chisel

• Water-based deck adhesive

• 9” roller

• Contact adhesive

• Sharp knife

• EPDM tape and primer

• Paint brush

• Penny roller

• Masonry drill, RawlPlugs, and fasteners

• Mastic

• Hammer

1. Surface Cleaning & Preparation

Begin by thoroughly cleaning the roof with a soft brush to remove dust, dirt, moss, or grease. Any old roofing materials should also be removed. Ensure the roof is completely dry, as moisture prevents the adhesive from bonding correctly. Inspect for cracks or gaps and fill anything larger than a quarter of an inch with wood strips. Chase out mortar joints if you’ll be installing wall trim later.

2. Positioning the Membrane

Unfold the EPDM membrane over the roof, leaving extra material to overhang walls and edges. Install drip battens or edge trims if needed. Let the membrane rest for about 30 minutes to allow natural expansion, reducing wrinkles during installation.

3. Apply Water-Based Adhesive

Fold back half of the membrane and apply water-based deck adhesive evenly with a 9” roller. Leave a 150mm perimeter free for contact adhesive later. Roll the membrane back into place, then sweep across with a broom to remove trapped air and ensure a smooth bond.

4. Apply Contact Adhesive

Fold back the perimeter section and apply a thin layer of contact adhesive to both the deck and membrane. Allow it to become touch-dry, then re-fold the membrane. Trim excess membrane from walls and vertical upstands.

5. Use EPDM Tape for Corners

For external corners, cut EPDM tape to size with extra allowance. Apply EPDM primer slightly beyond the tape area, let it touch-dry, then press tape firmly in place. Use a penny roller to ensure a complete bond.

6. Install Wall Trim

Drill through the wall trim and wall, insert RawlPlugs, and secure with fasteners. Apply mastic along the trim and wall chase for a watertight finish.

7. Finish the Edges

Form a “pigs ear” fold in the membrane along edges, position trim corners, and secure with snap clips. Install drip or gutter front trims and trim any remaining excess membrane.

8. Final Checks & Tips

Your EPDM roof is now installed! To maximise lifespan:

• Regular inspections: Check for cracks, splits, or loose areas, especially after storms.

• Cleaning: Remove debris, gently sweep or rinse the surface, and avoid high-pressure washers.

• Prompt repairs: Fix minor damage immediately to prevent costly structural issues.

Health & Safety Tips

Working on a roof can be hazardous, especially in Cumbria where weather conditions can change quickly. Keep safety a top priority:

• Clear debris: Remove any dirt, loose tiles, or tools to prevent trips and falls.

• Check the weather: Always work on dry, mild days. Avoid icy, wet, or extremely hot conditions.

• Stay aware: Never turn your back on the roof edge and mark safe walkways.

• Wear proper gear: Sturdy shoes with grip, gloves, goggles, and a hard hat are essential.

Can You Install EPDM Rubber Roofing Yourself in Cumbria?

If you’re considering installing an EPDM roof yourself, the good news is yes, it’s possible! For small DIY teams or confident homeowners, EPDM is one of the most straightforward roofing systems to handle. Its lightweight, flexible, and cold-applied nature makes it ideal for flat roofs on homes, extensions, garages, and outbuildings across Cumbria.

EPDM is particularly suited to DIY projects because it doesn’t require heavy machinery or hot-applied adhesives, which can be complicated and unsafe. With a clear step-by-step approach and the right materials, including adhesive, rollers, and trims, a careful DIY install can give you a high-quality, long-lasting roof that will stand up to the region’s heavy rainfall, strong winds, and even occasional snow.

That said, Cumbrian weather can be unpredictable, and roofs on older stone cottages, rural farmhouses, or properties in exposed locations can present unique challenges. For these projects, many homeowners choose to call in local experts like Westmorland Roofing. Our team combines decades of experience with local knowledge to ensure your EPDM roof is installed efficiently, safely, and with a professional finish you can rely on for decades.

DIY installation is possible, but having guidance from experienced installers can save time, reduce errors, and guarantee peace of mind, especially in Cumbria’s sometimes harsh and changeable weather.

What is the EPDM Rubber Roof Installation Cost in Cumbria?

If you’re considering an EPDM rubber roof for your home, extension, or outbuilding in Cumbria, it’s natural to wonder about the cost. EPDM is a long-lasting, flexible, and durable roofing solution, but prices can vary depending on roof size, complexity, and other factors specific to your property.

Here’s a rough guide to what homeowners in Cumbria might expect:

• Small Garage or Shed (~15 m²): £1,000 – £1,500

• Small Extension or Garden Room (~25 m²): £2,000 – £3,000

• Larger Extension or Flat Roof (~40 m²+): £3,200 – £4,800+, depending on roof complexity and access

This estimate includes both materials and professional installation, but prices can vary depending on local conditions, materials chosen, and specific requirements of your property.

What Affects the Cost?

Several factors influence how much an EPDM roof will cost:

• Roof Size: Larger roofs naturally require more membrane and more labour. Small garage or shed roofs may only take a day to install, while bigger extensions or complex designs can take several days.

• Roof Complexity: Vents, upstands, skylights, and corners increase installation time and materials, raising the overall cost.

• Materials: Quality of EPDM membrane, adhesives, primers, trims, and flashing all affect price. Premium brands like Firestone or ClassicBond are slightly higher but offer superior durability.

• Labour & Access: Roofs in rural or hard-to-reach locations, typical for many Cumbrian homes, may require scaffolding or additional safety measures.

• Preparation & Repairs: Replacing damaged decking, adding insulation, or removing old roofing will also add to the final price.

How Long Does It Take to Install an EPDM Rubber Roof in Cumbria?

EPDM roofing is a popular choice for property owners across Cumbria, thanks to its durability, flexibility, and weather resistance. Whether you’re covering a garden room in Keswick, a garage in Kendal, or a flat roof extension in Barrow-in-Furness, understanding how long the installation takes helps you plan your project effectively.

1. Roof Size

The larger the roof, the longer the installation. A small garden room or shed (around 8–10 sqm) can usually be completed in a single day. Larger roofs, or those requiring EPDM sheets to be joined, may take several days to complete.

2. Roof Complexity

Simple, flat roofs without additional features like vents, pipes, or skylights are quicker to cover. Complex roofs with multiple upstands or corners require extra care and detailing, which naturally extends the timeline.

3. Weather Conditions

Cumbria’s climate can be unpredictable, and rain, frost, or strong winds can slow down or delay EPDM installation. The membrane should ideally be applied on dry days, with temperatures above 5°C to allow adhesives to bond correctly. Cold or damp weather can extend curing times, so it’s important to plan around local forecasts.

4. Safety Considerations

Safety is essential. Working at height, especially on wet or slippery surfaces, requires careful planning. Taking time to set up safety measures and ensuring a stable work environment can add to the overall project time but is vital for a secure installation.

Typical EPDM Installation Timeline

Planning your installation with these factors in mind ensures a smooth process and a long-lasting, waterproof EPDM roof that can withstand Cumbria’s heavy rainfall, strong winds, and occasional snow.

For homeowners unsure about timing, weather, or handling tricky roof details, Westmorland Roofing offers expert EPDM installation across the Lake District and surrounding areas, delivering professional results efficiently and safely.

For a straightforward flat roof in Cumbria:

• Small roofs (garages, sheds, garden rooms): 1 day

• Medium roofs (extensions, multi-upstand projects): 1–2 days

• Large or complex roofs (commercial flat roofs, multiple joins): 2–5 days

What are the Benefits of EPDM Rubber Roofing in Cumbria?

When it comes to flat roofing in Cumbria, EPDM rubber roofing has become one of the most reliable and versatile solutions for homeowners, farmhouses, and small commercial properties alike.

Whether you’re replacing the flat roof of a modern extension in Windermere or covering a traditional stone garage in Kendal, EPDM, short for ethylene propylene diene terpolymer, offers exceptional performance in even the harshest Cumbrian conditions.

Even smaller outbuildings such as summer houses, sheds, and garden studios benefit from EPDM membranes, ensuring every part of your property is protected against the constant rain, strong winds, and heavy snowfalls that characterise life across the Lake District and coastal towns like Barrow-in-Furness and Workington.

Due to the following benefits of EPDM rubber roofing, it is an increasingly popular choice for Cumbria homeowners. From the Lake District fells to the coastal towns, it offers a dependable, long-lasting solution that stands up to local weather conditions, protects your property, and delivers real value.

Exceptional Waterproofing

Cumbria’s unpredictable weather can be tough on roofs, but EPDM excels where others struggle. When installed correctly, an EPDM membrane is completely waterproof, making it a top choice for areas prone to heavy rainfall, snow, and storms.

Its robust composition ensures that water is kept firmly out, safeguarding your home, extension, or outbuilding from leaks and damp – a common concern for older stone cottages and rural properties.

Environmentally Friendly

For environmentally conscious homeowners in Cumbria, EPDM offers a sustainable roofing option. The membrane is fully recyclable and long-lasting, meaning fewer replacements over time and less waste sent to landfill.

Brands such as Firestone and ClassicBond use inert materials with minimal environmental impact, giving you peace of mind that your roof is both durable and eco-friendly.

Easy to Fit

Unlike some traditional roofing materials, EPDM is lightweight and straightforward to install. Its flexibility allows it to adapt to uneven surfaces and accommodate the natural expansion and contraction caused by Cumbria’s fluctuating temperatures.

A typical installation involves roof preparation, positioning the membrane, applying adhesive, and finishing trims and edges, a methodical process that can be completed quickly and efficiently by professionals like Westmorland Roofing.

Cost-Effective

EPDM is a highly economical roofing solution, particularly when you consider its long lifespan and low maintenance requirements. It provides excellent insulation, keeping homes warm during chilly Cumbrian winters while reflecting summer heat, which can also help reduce energy bills.

Its durability means minimal repair work over the years, protecting interiors from water damage and giving homeowners excellent value for money.

Low Maintenance & Highly Durable

One of the standout advantages of EPDM is its resilience. Its tough, weather-resistant surface is remarkably resistant to splits, cracks, and leaks, even in areas exposed to coastal winds or heavy rainfall.

Routine inspections are simple, and any necessary repairs can be quickly addressed with specialist adhesives and sealants. For Cumbria’s rural and remote homes, this low-maintenance durability offers true peace of mind.

Flexible & Lightweight

EPDM’s molecular structure makes it highly flexible, allowing installation in the height of summer or the depths of winter without risk of damage. Its lightweight nature also ensures it won’t strain your roof structure, making it ideal for both modern flat roofs and traditional extensions across the region.

What are the Dos and Don’ts of EPDM Rubber Roofing in Cumbria?

EPDM rubber roofing is an excellent choice for flat roofs across Cumbria, offering durability, flexibility, and weather resistance. However, like any roofing system, getting the best performance from EPDM depends on careful installation and proper care. Whether you’re a DIY enthusiast or hiring a professional, following these dos and don’ts will ensure your roof lasts for decades.

Dos

1. Do Prepare the Surface Thoroughly

Before installing EPDM, make sure the roof deck is clean, dry, and free of debris. Any dust, dirt, or old roofing material can prevent proper adhesion and create weak spots that lead to leaks.

2. Do Use the Right Adhesives and Primers

EPDM requires specific water-based or contact adhesives for a secure bond. Follow manufacturer instructions closely, and allow adequate drying or curing times for maximum performance.

3. Do Allow the Membrane to Rest

After unrolling the EPDM, let it rest for at least 30 minutes before applying adhesive. This helps the rubber relax, preventing wrinkles and ensuring a smooth installation.

4. Do Check Weather Conditions

Cumbria’s weather can be unpredictable. Always aim to install or repair EPDM on dry, mild days. Avoid installation during heavy rain, frost, or strong winds, which can affect adhesion and safety.

5. Do Inspect Regularly

Even though EPDM is durable, regular inspections help identify minor issues like small tears, loose edges, or debris accumulation. Early detection prevents larger problems and extends the lifespan of your roof.

6. Do Hire Experienced Installers for Complex Jobs

For roofs with multiple upstands, vents, or drains, or for historic Cumbrian stone cottages, consider hiring professionals like Westmorland Roofing. Our experience ensures a secure, long-lasting finish that can withstand Lake District rainfall and coastal winds.

Don’ts

1. Don’t Skip Safety Measures

Always prioritise safety when working at height. Avoid slippery conditions, wear suitable footwear, and use safety harnesses or barriers where necessary.

2. Don’t Install on Wet or Frosty Surfaces

Adhesives won’t bond properly to damp or frozen surfaces, which can lead to leaks or premature membrane failure.

3. Don’t Cut Corners on Materials

Using incorrect adhesives, low-quality primers, or substandard trims can compromise your roof’s durability. Always use products recommended for EPDM roofing.

4. Don’t Ignore Expansion and Contraction

EPDM expands and contracts with temperature changes. Avoid fixing it too tightly or forcing it into place, as this can cause wrinkles, splits, or tears over time.

5. Don’t Forget Edge and Corner Detailing

Poorly sealed edges, corners, or wall upstands are common causes of leaks. Ensure all trims, tapes, and sealants are applied correctly.

6. Don’t Delay Repairs

Even small cracks, holes, or lifted edges should be addressed immediately. Delaying repairs can allow water ingress and damage the roof deck below.