Flat Roofing in Gerrards Cross

Gerrards Cross at a glance

Postcode districts: SL9
Population: about 20,633 (GeoNames)
Council area: Buckinghamshire Council
Building approval: Buckinghamshire Council building control, or a registered building control approver
Nearest main town: Slough, about 6 miles
Guide price region: South East (+10% on West Midlands rates)

What flat roof work do we do in Gerrards Cross?

Dormer roofs

If your dormer in Gerrards Cross was added years ago with a basic felt roof and little insulation, it will tend to fail at the edges first, and they leave the loft room cold in winter and hot in summer. A warm-roof replacement deals with both problems at once.

Single-ply membrane roofing

Single-ply is a common choice for medium and large flat roofs in Gerrards Cross because it covers big areas quickly, is light on the structure and has a long typical life. Wide rolls mean fewer seams, and those seams are welded and probed rather than glued.

Green and sedum roofs

Homeowners in Gerrards Cross building a new extension may find a green roof can help with a planning application, as some councils encourage them for biodiversity and slower rainwater run-off. It is worth raising early with your designer, before the roof structure is drawn up, so the joists can be sized for the extra weight.

All flat roof services in Gerrards Cross:

How much does a flat roof cost in Gerrards Cross?

Guide prices at South East rates including VAT. New and replacement roofs get a fixed price after a free survey; repair prices are confirmed once we've found the problem.

Job	Guide price inc VAT
Localised patch repair	£170–£550
Extension (20 m²), EPDM, new deck + insulation	£3,100–£5,350
Single garage (18 m²), liquid-applied	£2,250–£3,600
Porch or bay (4 m²), EPDM	£850–£1,400
Extension (20 m²), felt, new deck + insulation	£3,000–£5,150

What flat roofs are typical in and around Gerrards Cross?

In a town like Gerrards Cross flat roofs are mostly on shops with flat-roofed rear stores below flats and terraced streets with flat-roofed rear kitchens and bathrooms. Rain and wind decide how a flat roof is detailed. Much of the South East sits in the drier Thames catchment at roughly 730 mm of rain a year, so the usual failures are at joints, upstands and outlets rather than from sheer volume of rain. Approximate 1991–2020 regional averages based on Met Office data.

Who approves flat roof work in Gerrards Cross?

Where approval is needed it goes to Buckinghamshire Council building control, or a registered building control approver. Replacing more than half of a roof over a heated room usually counts as renovating a thermal element, so it is insulated to current standards and notified to building control. How the rules work.

Which places near Gerrards Cross do we cover?

Flat roofing in Gerrards Cross: questions

Do you cover Gerrards Cross?

Yes, including postcode districts SL9. Send your postcode with your enquiry and we'll arrange a survey.

Is a free survey available in Gerrards Cross?

Yes, for new and replacement roofs. A standalone condition survey or leak investigation report is a paid service.

Do flat roofs in Gerrards Cross need building control approval?

Often. Replacing more than half of a roof over a heated room usually means insulating it to current standards and notifying building control, and structural changes need approval too. In Gerrards Cross that's Buckinghamshire Council building control, or a registered building control approver. We tell you at the survey and handle it.

How much is a new flat roof in Gerrards Cross?

A typical 18 m² EPDM garage roof is £1,750–£3,100 and a 20 m² insulated EPDM extension roof is £3,100–£5,350, at South East guide rates including VAT.