Flat roofing in Northfield

What should you know before starting in Northfield?

Live in a conservation area or a listed building in Northfield? Check with Birmingham City Council before changing the outside of your home. Otherwise the main rules for your flat roof are Building Regulations, and we'll explain at the survey which certificates you'll receive.

Turning a flat roof into a pitched roof, or adding a roof terrace, usually needs planning permission.
The target U-value for a renovated roof is 0.16 W/m²K, where that's practical.
Most flat roof leaks start at edges, joints, outlets or wall abutments.

Postcode district: B31
Planning and building control: Birmingham City Council
From our West Bromwich base: 7 miles

Choices to weigh up in Northfield

Roof lights and outlets

Flat roof lanterns and flat glass roof lights can be fitted or replaced at the same time as a new roof. Outlets, gutters and edge trims are renewed so water runs away cleanly. Getting the fall right during the deck replacement is the best way to stop water pooling, which shortens a roof's life.

Torch-on felt

Modern reinforced bitumen membranes laid in two or three layers, bonded with heat. They're tougher and longer-lasting than old felt and suit roofs with lots of upstands and pipes. Felt is often the cheapest option, but it takes longer to lay and naked flames on site need extra fire precautions.

How much should you budget in Northfield?

Prices in Northfield match the rest of our area: £1,300–£7,500 depending on size and specification. Strip and replace a 20 m² rear extension roof in EPDM, with new deck and warm-roof insulation: usually £3,200–£4,600.

Guide prices for flat roofing
Option	Guide price	Good to know
Single garage roof	£1,300 – £2,600	About 15–18 m², strip and re-cover
Rear extension roof	£2,400 – £5,200	About 20–30 m², usually with insulation
Dormer or larger roof	£3,800 – £7,500	Upper-floor access, scaffold and detailing

Guide ranges include VAT where it applies. We confirm a fixed price for the agreed specification after visiting.

Before you book in Northfield

How much does a new flat roof cost?

In the West Midlands, re-covering a single garage roof usually costs around £1,300–£2,600, and a 20–30 m² extension roof around £2,400–£5,200, depending on the membrane, deck repairs and insulation. Dormer roofs cost more because of access. Your quote names the membrane and lists deck work and insulation separately.

Which postcodes in Northfield do you work in?

We cover B31 and the streets around them. If you're on the edge of Northfield, neighbouring Longbridge and Kings Norton are covered too.

What guarantee comes with a flat roof?

The membrane and related materials are covered by the manufacturer's guarantee, and the terms for your roof are set out in your quote. Some manufacturers' guarantees depend on the roof being installed to their specification and inspected, which is worth asking about. Keep the paperwork with your building regulations certificate.

Will I need permission from the council in Northfield?

You won't usually need planning permission, but the work must meet Building Regulations. Building control in Northfield is provided by Birmingham City Council or a registered building control approver, and some work is self-certified by registered installers.

Close to Northfield

More services in Northfield

Let us find the cause before we price the fix: book a free flat roof survey in Northfield.