Stevenage at a glance
- Postcode districts
- SG1, SG2
- Population
- about 91,774 (GeoNames)
- Council area
- Stevenage Borough Council
- Building approval
- Stevenage Borough Council building control, or a registered building control approver
- Nearest main town
- Luton, about 9 miles
- Guide price region
- East of England (+5% on West Midlands rates)
When does a garage roof in Stevenage need replacing?
Garage roofs in Stevenage are often replaced when the deck gives way. Chipboard decks swell and soften once they get wet, and you may see sagging between joists or feel the roof flex underfoot. Replacing the deck and covering together is usually more economical than repeated repairs.
Stevenage's flat roofs are mostly on shops with flat-roofed rear stores below flats, with plenty on terraced streets with flat-roofed rear kitchens and bathrooms too. The East of England is the driest part of Britain, with parts of the Anglian region around 630 mm a year, so summer heat and UV, not rainfall, do most of the ageing on a felt roof.
How much does a new garage roof cost in Stevenage?
For Stevenage we use East of England rates: £1,700–£2,950 is the guide for a typical 18 m² garage roof in EPDM, VAT included. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Single garage (18 m²), EPDM rubber | £1,700–£2,950 |
| Single garage (18 m²), torch-on felt | £1,600–£2,750 |
| Single garage (18 m²), GRP fibreglass | £1,850–£3,400 |
| Extension (20 m²), GRP, new deck + insulation | £3,150–£5,650 |
Which roofing system is best for a garage?
For most single garages, EPDM rubber is a strong choice, because a simple rectangle can usually be covered in one sheet with no joins in the field of the roof. It is light, flexible and quick to lay.
GRP fibreglass suits garages with integral box gutters, several corners or a roof that is walked on to reach windows or clean gutters. Torch-on felt remains a cost-effective, durable option, particularly on larger lock-up runs where budget matters. Where a garage adjoins timber or other combustible material, we also consider whether a torch-free system is the safer method, such as EPDM, GRP or a liquid-applied coating.
If you plan to convert the garage later, say so at survey. A roof built as a warm roof now saves stripping it again when the room is heated.
What's included?
- Gutter or outlet renewed where the old one has failed
- New membrane dressed into fresh edge and drip trims
- Free survey of the deck, fall and gutter line
- Strip-out of old felt, chippings and waste
Building regulations in England
Replacing more than half of a flat roof over a heated room usually counts as renovating a thermal element, so the roof is insulated to around 0.16 W/m²K where that's technically and economically feasible, and the work is notified to building control: the council or a registered building control approver, unless a registered competent person self-certifies it. A roof on a new extension is built to 0.15 W/m²K. Patch repairs, and most unheated detached garages, don't trigger the upgrade. Structural changes, or a new covering that adds 15% or more to the roof's weight, also need approval. More on the rules.
Which nearby areas do we also cover?
- Hitchin · 5 mi
- Letchworth Garden City · 5 mi
- Welwyn Garden City · 7 mi
- Harpenden · 9 mi
- Hertford · 9 mi
- Luton · 9 mi
Garage roofs in Stevenage: questions
Do you cover Stevenage?
Yes. Stevenage is part of our Hertfordshire coverage, including postcode districts SG1, SG2. Surveys and roofs are carried out by vetted roofing teams working under S&K Property Investments and Improvement Ltd.
Who checks building regulations for a flat roof in Stevenage?
Where the work needs approval it goes to Stevenage Borough Council building control, or a registered building control approver. We tell you at the survey whether your job needs it and deal with the paperwork as part of the quote.
How much does a new garage roof cost in Stevenage?
£1,700–£2,950 for a typical 18 m² garage roof in EPDM, at East of England guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Is it worth repairing a garage roof instead?
If the roof is generally sound and dry with one isolated defect, a repair is usually sensible. Widespread cracking, a soft deck or repeat leaks point to replacement.
How long does a garage roof last?
It depends on the system. As indicative figures, EPDM lasts 25–50 years, GRP 20–40 and modern torch-on felt 15–25, with good specification and maintenance.