Flat Roofing in Grantham

Grantham at a glance

Postcode districts: NG31
Population: about 44,580 (GeoNames)
Council area: South Kesteven District Council
Building approval: South Kesteven District Council building control, or a registered building control approver
Guide price region: East Midlands (−2% on West Midlands rates)

What flat roof work do we do in Grantham?

Flat roof repairs

Buying or selling a property in Grantham with a tired flat roof? A surveyor's report may flag damp, blistering or ponding. A targeted repair can deal with an isolated defect, and where the roof is near the end of its life we will explain that clearly so the cost can be planned.

Flat roof replacement

A mineral felt roof laid decades ago may still look intact from the ground in Grantham, yet have lost its chippings, cracked at the laps and pulled away at the upstands. Those faults let water track under the covering, so by the time a ceiling stain appears, the deck has often been wet for some time.

Extension and kitchen roofs

Ponding against the house wall is a common reason for replacing an extension roof in Grantham. When the deck dips near the wall or the fall runs the wrong way, water sits against the abutment and eventually gets in. A new roof with corrected falls moves the water to the gutter.

All flat roof services in Grantham:

How much does a flat roof cost in Grantham?

Guide prices at East Midlands 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), liquid-applied	£2,000–£3,200
Upstand or flashing repair	£250–£640
Extension (20 m²), felt, new deck + insulation	£2,650–£4,600
Extension (20 m²), EPDM, insulation + 1 rooflight upstand	£2,950–£5,150
Single garage (18 m²), GRP fibreglass	£1,750–£3,200

What flat roofs are typical in and around Grantham?

In a town like Grantham flat roofs are mostly on 1960s and 1970s link-detached houses with flat-roofed garages and porches and low-rise post-war blocks of flats. The climate is part of the brief. The East Midlands is drier than the west of Britain, so most flat roofs here fail through age, UV and poor detailing at upstands rather than sheer rainfall. Approximate 1991–2020 regional averages based on Met Office data.

Who approves flat roof work in Grantham?

Where approval is needed it goes to South Kesteven 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 Grantham do we cover?

Flat roofing in Grantham: questions

Do you cover Grantham?

Yes, including postcode districts NG31. Send your postcode with your enquiry and we'll arrange a survey.

Can you repair a leaking flat roof in Grantham?

Yes. We trace where the water is actually getting in first, because the leak inside is rarely under the defect outside, then repair with materials compatible with your roof.

Is a free survey available in Grantham?

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

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

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.