In detail
EPDM Flat Roofing Explained
How an EPDM flat roof is built
A typical EPDM installation starts with a sound deck, usually OSB or plywood boards fixed to the joists. The membrane is then bonded to the deck with adhesive, with a separate contact adhesive around the perimeter. Edge trims are fitted to the drip edges and walls, and the membrane is dressed up any abutting walls and finished under flashing where needed.
Because the rubber comes in large sheets, most domestic garages, extensions and sheds can be covered in one piece. Where joints are needed, they are made with dedicated seam tape rather than heat.
EPDM compared with felt
Traditional felt roofs are built up in layers of bitumen-based sheets, torched or bonded together. They can perform well, but joints and the constant expansion and contraction of bitumen in sun and frost are where they tend to fail. EPDM is a single, flexible membrane with no need for open flames on site, which also makes it a sensible choice next to timber, uPVC and neighbouring properties.
Where I fit EPDM
Garage roofs, single-storey rear and side extensions, flat-roofed dormers, porches and canopies, bay window tops, and garden sheds and outbuildings. I often replace fascias and trims at the same time so the whole roof edge is renewed together: one customer in RG29 had uPVC fascias and an EPDM garage roof done in the same job.
Drainage and falls
A flat roof isn't actually flat. It needs a slight fall so water runs off to the gutter or outlet rather than sitting on the surface. Where an old roof has sagged or ponds badly, I'll explain whether the fall can be corrected as part of the job, so the new roof isn't sitting under standing water from day one.
Residential focus
My work is residential: homes, garages, extensions and outbuildings across Aldershot and the surrounding area. Every job is quoted individually after a free inspection, because the size, access and condition of the deck vary from roof to roof.
Why homeowners choose Justin
I'm Justin Wigmore and I run J Wigmore Roofing Ltd on my own. There's no sales visit followed by a different crew: the person who inspects your roof is the person who quotes it, carries out the work and clears up afterwards. I've been listed on Checkatrade for 16 years with a 10/10 rating from 408 reviews, and the same themes come up again and again: excellent communication, daily updates, turning up when I say I will, a clean and tidy site every day, and a final price that matches the quote.
Every job is priced as a fixed quote after a free inspection. I hold £1 million public liability insurance, and payment is by BACS (preferred), cash or cheque.
EPDM Flat Roofing across Aldershot and nearby towns
I'm based in Aldershot and regularly work across Farnborough, Ash and Ash Vale, Farnham and its surrounding villages, Fleet, Blackwater and Hawley, Godalming, Guildford and Odiham. Housing across North East Hampshire and West Surrey ranges from Victorian terraces and inter-war semis to post-war estates and modern homes with garages and extensions, so every roof is assessed on its own merits rather than priced from a list.
Before you get in touch
It helps to know roughly where the problem is, how long you've noticed it and whether water is getting inside. Photos taken from the ground are useful but not essential. Use the form below or call me, and I'll arrange a free inspection at a time that suits you. There's no obligation, and you'll get a fixed written quote so you can decide in your own time.










