Flat roofing in Knowle

What should you know before starting in Knowle?

Live in a conservation area or a listed building in Knowle? Check with Solihull 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.

Rotten decking is only found once the old roof is stripped, and any repair is agreed in writing first.
Most flat roof leaks start at edges, joints, outlets or wall abutments.
Getting the fall right stops water pooling, which shortens the life of any membrane.

Postcode district: B93
Planning and building control: Solihull Council
From our West Bromwich base: 14 miles

Which options suit homes in Knowle?

Warm-roof insulation upgrade

Rigid insulation boards are laid on top of the deck, under the new membrane, so the timbers stay warm and the risk of condensation drops. A warm roof raises the roof level slightly, which affects upstands, door thresholds and window cills. We check those details at survey before recommending it.

GRP fibreglass roof

Glass-reinforced plastic laid as a liquid resin and matting over a board deck, which cures into a hard, joint-free, walkable surface. GRP works well on roofs with awkward shapes, roof lights and balconies, and comes in grey and other colours. It must be laid in dry conditions and needs a stable deck.

Flat roofing prices in Knowle

For a home in Knowle, our guide range is £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. Your fixed price for the agreed specification follows a free survey at your Knowle address.

Flat roofing in Knowle: common questions

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.

Which postcodes in Knowle do you work in?

We cover B93 and the streets around them. If you're on the edge of Knowle, neighbouring Dorridge and Balsall Common are covered too.

How long does a flat roof replacement take?

A single garage roof usually takes one or two days, and an extension or dormer roof two to five days, depending on size, insulation and detailing. Flat roofing needs dry weather, especially GRP, so we may move a start date if heavy rain is forecast. The roof is kept covered overnight throughout.

Does Solihull Council need to approve my flat roof?

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

Close to Knowle

More services in Knowle

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