Rugby at a glance
- Postcode districts
- CV21, CV22
- Population
- about 78,117 (GeoNames)
- Council area
- Rugby Borough Council
- Building approval
- Rugby Borough Council building control, or a registered building control approver
- Nearest main town
- Coventry, about 11 miles
- Guide price region
- West Midlands (baseline rates)
Why choose a green roof in Rugby?
Garden rooms and outbuildings in Rugby, as elsewhere, often have small flat roofs that are seen from the house and garden. A sedum finish helps them blend in, provided the structure is strong enough and the roof underneath is built properly.
Rugby's flat roofs are mostly on newer estates where the first extension roofs are now being replaced, with plenty on lock-up garage blocks on estates too. England averages roughly 870 mm of rain a year and the West Midlands sits close to that, so falls and outlets are the difference between a roof that drains and one that ponds.
How much does a green roof cost in Rugby?
At West Midlands guide rates, a 20 m² insulated extension roof finished as a sedum green roof comes to £4,400–£8,100 including VAT. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Extension (20 m²), EPDM with sedum green roof | £4,400–£8,100 |
| Extension (20 m²), EPDM, new deck + insulation | £2,800–£4,900 |
Can a green roof go on my existing flat roof?
Only if the existing waterproofing is sound, root-resistant or protected by a root barrier, and has plenty of life left. In most cases it makes more sense to lay a green roof as part of a replacement.
Once the sedum, substrate and drainage layers are down, the membrane underneath is hard to inspect and expensive to repair, because the green layers have to be lifted to get to it. Putting a green roof on an ageing covering risks paying for the greenery twice. Our repair or replace guide helps you judge whether your current roof is a sensible base.
As for planning, re-covering a house roof normally needs no application if its appearance doesn't change materially. Because a green roof does change how a roof looks, check with your council, especially for listed buildings, conservation areas and roofs that are easily seen. The planning guide has more.
What's included?
- Root-resistant membrane or separate root barrier
- Gravel strips kept clear around edges and outlets
- Warm or inverted build-up to suit the roof
- Pre-grown sedum blankets laid and watered in
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?
- Daventry · 9 mi
- Coventry · 11 mi
- Bedworth · 11 mi
- Royal Leamington Spa · 12 mi
- Hinckley · 13 mi
- Nuneaton · 14 mi
Green and sedum roofs in Rugby: questions
Do you cover Rugby?
Yes. Rugby is part of our Warwickshire coverage, including postcode districts CV21, CV22. 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 Rugby?
Where the work needs approval it goes to Rugby 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 green roof cost in Rugby?
£4,400–£8,100 for a 20 m² insulated extension roof finished as a sedum green roof, at West Midlands guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Can I walk on a green roof?
Only for maintenance, and only where it is safe. Most extensive green roofs on homes aren't designed as roof terraces, and a terrace generally needs planning permission and edge protection.
Can you put a sedum roof on a garage?
Often, yes, if the structure is strong enough. Many older garage roofs have light timbers, so a structural check comes first and strengthening may be needed.