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Upgrades

Green and sedum roofs in Brixham

A sedum roof suits an extension in Brixham that is overlooked from upstairs windows, or a garden building you want to blend into the garden. We explain the weight, planning and maintenance points at the survey so the decision is a clear one.

Sedum green roof with a gravel border and inspection chamber on a single-storey extensionComputer-generated example image

Brixham at a glance

Postcode districts
TQ5
Population
about 16,693 (GeoNames)
Council area
Torbay Council
Building approval
Torbay Council building control, or a registered building control approver
Guide price region
South West (+3% on West Midlands rates)

Why choose a green roof in Brixham?

Rainwater from flat roofs in Brixham runs off quickly in heavy showers. A green roof holds some of that water back and releases it more slowly, which is one reason some owners and developers choose one. The flowering sedum also draws in bees and other insects.

In and around Brixham, flat roofs are typically found on newer estates where the first extension roofs are now being replaced, and on 1960s and 1970s link-detached houses with flat-roofed garages and porches. The South West averages roughly 1,260 mm of rain a year and many roofs face wind off the Atlantic, so we specify fixings and edge details for wind uplift as well as drainage.

How much does a green roof cost in Brixham?

For Brixham we use South West rates: £4,550–£8,350 is the guide for a 20 m² insulated extension roof finished as a sedum green roof, VAT included. The fixed price comes after a free survey for new and replacement roofs.

JobGuide price inc VAT
Extension (20 m²), EPDM with sedum green roof£4,550–£8,350
Extension (20 m²), EPDM, new deck + insulation£2,900–£5,050

Can my flat roof take the weight of a green roof?

Not every roof can, which is why we check the structure before quoting. A sedum roof is light compared with an intensive garden, but its growing medium holds water, and a saturated build-up adds significant weight to the roof.

We look at the joist sizes, spans and spacing, the condition of the deck and what the roof sits on. On a recently built extension with generously sized joists, an extensive green roof may be straightforward. On an older garage or a roof with undersized or rotten timbers, the structure may need strengthening, or a structural engineer's calculation may be needed before we can go ahead.

In England, a new roof covering that adds 15% or more to the weight of the roof triggers building control approval, and a green roof will often fall into that category. We handle building control where it is needed. The building regulations page covers the approval routes in each nation.

What's included?

  • Drainage layer, filter and lightweight growing medium
  • Root-resistant membrane or separate root barrier
  • Warm or inverted build-up to suit the roof
  • Structural check of joists, deck and supports

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?

Green and sedum roofs in Brixham: questions

Do you cover Brixham?

Yes. Brixham is part of our Devon coverage, including postcode districts TQ5. 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 Brixham?

Where the work needs approval it goes to Torbay 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 Brixham?

£4,550–£8,350 for a 20 m² insulated extension roof finished as a sedum green roof, at South West guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.

Can you put a green roof on a pitched roof?

We install green roofs on flat roofs only. Sloping green roofs need extra restraint to stop the growing medium slipping, and they are a specialist job outside our work.

Can a green roof have a rooflight in it?

Yes. The rooflight sits on a raised upstand with a gravel strip around it, so the planting stays clear of the glazing and the upstand stays visible and dry.

Other flat roof work in Brixham

Green and sedum roofs in Brixham: get a fixed price

Free survey and a written fixed quote for replacement and new roofs. No obligation.

Call usGet a guide price