Flat Roofing in Sevenoaks

Sevenoaks at a glance

Postcode districts: TN13
Population: about 29,506 (GeoNames)
Council area: Sevenoaks District Council
Building approval: Sevenoaks District Council building control, or a registered building control approver
Nearest main town: Maidstone, about 14 miles
Guide price region: South East (+10% on West Midlands rates)

What flat roof work do we do in Sevenoaks?

Torch-on felt roofing

On larger roofs in Sevenoaks with poor falls, torch-on felt pairs well with tapered insulation, which builds the fall into the insulation boards. That deals with ponding properly while adding insulation, rather than patching the low spots and waiting for the next leak.

EPDM rubber roofing

If your Sevenoaks roof has been patched more than once and the felt is cracking or blistering, a full replacement in EPDM can be better value than another repair. The rubber stays flexible through hot summers and freezing nights, and the replacement is the right point to bring the insulation up to standard.

Extension and kitchen roofs

Extension roofs in Sevenoaks are often replaced because the original was built cheaply: thin chipboard decks, little or no insulation and felt turned up the wall without a proper flashing. Twenty or thirty years on, those weaknesses show up as leaks at the back wall and a cold, damp ceiling.

All flat roof services in Sevenoaks:

How much does a flat roof cost in Sevenoaks?

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
Single garage (18 m²), GRP fibreglass	£1,950–£3,600
Extension (20 m²), EPDM, insulation + 1 rooflight upstand	£3,300–£5,750
Commercial roof (100 m²), single-ply + insulation	£14,550–£23,950
Single garage (18 m²), EPDM rubber	£1,750–£3,100
Balcony (12 m²), liquid-applied, scaffold	£2,100–£3,600

What flat roofs are typical in and around Sevenoaks?

In a town like Sevenoaks flat roofs are mostly on low-rise post-war blocks of flats and shops with flat-roofed rear stores below flats. 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 Sevenoaks?

Where approval is needed it goes to Sevenoaks District 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 Sevenoaks do we cover?

Flat roofing in Sevenoaks: questions

Do you cover Sevenoaks?

Yes, including postcode districts TN13. Send your postcode with your enquiry and we'll arrange a survey.

How much is a new flat roof in Sevenoaks?

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.

What's the best flat roof system for a house in Sevenoaks?

For most garages and extensions it's EPDM or GRP; torch-on felt is the budget option and liquid suits detailed or overlay jobs. We recommend one at the survey.

Do flat roofs in Sevenoaks 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 Sevenoaks that's Sevenoaks District Council building control, or a registered building control approver. We tell you at the survey and handle it.