EPDM Rubber Roofing in St Helier

If you're looking for EPDM Rubber Roofing in St Helier (SM4), you've come to the right place. AWN Roofing Specialists provide Single-ply EPDM membrane for flat roofs. 50+ year lifespan. Ideal for extensions, garages, dormers.

About St Helier

St Helier is one of the largest post-war housing estates in South London, mostly 1950s-60s construction with flat-roof maisonettes, decks and walkways above ground-floor flats. Common work here: flat-roof renewals (EPDM and GRP), felt deck replacements, and structural gutter work on shared blocks.

What we offer in St Helier

EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber membrane that's become the gold standard for flat roofs across the UK. A single sheet, fully adhered or mechanically fixed, with no seams in the field of the roof.

What is EPDM?

A synthetic rubber membrane manufactured in large sheets (up to 15m wide and 30m+ long). Most residential installations are done in a single sheet — no field seams at all.

The rubber is highly flexible (-40°C to 150°C operating range), UV-stable, and chemically inert. It doesn't pollute rainwater runoff, which is increasingly important for sustainable drainage.

Why we recommend EPDM

• 50+ year lifespan — outlasts felt and GRP by decades
• Seamless single sheet — no joins to fail in the field
• Flexible — handles building movement without cracking
• Recyclable — sustainable end-of-life option
• Quick install — most residential roofs done in 1-2 days
• Cost-effective long-term — though higher upfront than felt, lower lifetime cost

Where EPDM works

• House extensions and dormers
• Garage roofs
• Porches and bay windows
• Garden offices and outbuildings
• Most residential flat roofs with adequate falls (minimum 1:80)

Where EPDM isn't ideal

• Walkable surfaces (use GRP instead)
• Roofs with heavy foot traffic
• Roofs that need to be very low pitch (under 1:80 fall)
• Bitumen/asphalt surfaces (EPDM degrades on contact — we use a separation layer)

Installation process

1. Strip existing roof covering
2. Inspect and repair deck (OSB or plywood, 18mm minimum)
3. Install insulation to current Building Regulations (Part L)
4. Lay EPDM membrane — fully adhered with bonding adhesive
5. Form upstands at walls, parapets, roof windows
6. Install edge trims and termination bars
7. Water test (flood test for 24 hours)
8. Register manufacturer warranty

Warranties

• Material warranty: 20-25 years (standard manufacturer)
• Expected service life: 50+ years
• Workmanship warranty: 10 years from us

Cost guide

• Typical garage roof (15-20m²): £1,500-£2,200
• House extension (20-40m²): £2,000-£4,000
• Large flat roof (50m²+): £4,500-£7,500

Why choose AWN Roofing for EPDM Rubber Roofing in St Helier?

• Local knowledge: We know St Helier properties — period homes, modern builds, conservation rules where applicable
• Fast response: Same-day emergency callouts, free quotes within 48 hours for non-urgent work
• Written quotes: Itemised, fixed-price, no hidden extras
• Certified work: NVQ-qualified team, full public liability insurance, manufacturer warranties
• Local reputation: Most of our St Helier work comes from word-of-mouth referrals