Bi-fold and patio doors in Kenilworth

Planning your bi-fold or patio doors in Kenilworth

This kind of work rarely needs planning permission, but it does have to comply with Building Regulations, and some parts must be certified by a registered installer or signed off by building control. In Kenilworth, building control is provided by Warwick District Council or a registered building control approver (formerly an approved inspector).

Bi-fold and patio doors must meet a U-value of 1.4 W/m²K or an equivalent energy rating.
Widening an opening needs a structural engineer's design and building control approval.
Glass in a door must be safety glass up to 1,500 mm above the floor.

Postcode district: CV8
Planning and building control: Warwick District Council
From our West Bromwich base: 21 miles

Options to consider in Kenilworth

Widening an opening

Turning a window into doors, or making an opening wider, means cutting the wall and fitting a new lintel or steel beam sized by a structural engineer. Building control must approve the structural work. We organise the calculations, temporary supports, steel and making good, and show these costs on their own lines in your quote.

French doors

A pair of hinged doors that open outwards or inwards, sometimes with fixed side panels. French doors suit narrower openings and older houses. They're the simplest and most affordable way to replace an old single back door, or to turn a window into a wider opening onto a patio.

Bi-fold and patio doors prices in Kenilworth

For a home in Kenilworth, our guide range is £1,200–£8,500 per doorset. Three-panel aluminium bi-fold, about 2.4 m wide, in an existing opening: usually £3,200–£4,800 per doorset.

Guide prices for bi-fold and patio doors
Option	Guide price	Good to know
uPVC French or sliding doors	£1,200 – £2,400 per doorset	Openings up to about 1.8 m
Three-panel aluminium bi-fold	£3,000 – £5,000 per doorset	Openings of about 2.4–3 m
Four- or five-panel aluminium bi-fold	£4,800 – £8,500 per doorset	Openings of about 3.6–4.8 m

Guide ranges include VAT where it applies. A free survey turns this guide into a fixed, itemised price.

Before you book in Kenilworth

What guarantee comes with the doors?

The frames, glass, rollers and locks are covered by the manufacturer's guarantee, and the terms for your doors are set out in your quote. Ask how sealed units, running gear and powder coating are covered, as these vary between systems. Keep the guarantee with your certificate and any structural sign-off from building control.

Which postcodes in Kenilworth do you work in?

We cover CV8 and the streets around them. If you're on the edge of Kenilworth, neighbouring Leamington Spa and Tile Hill are covered too.

What should I check before ordering?

Think about the floor level inside and out: a flush threshold needs the patio set lower, with drainage at the door. Decide which side the panels should stack and where the everyday traffic door goes, keeping furniture in mind. If the doors face south or west, ask about solar control glass to keep the room cooler.

Who approves bi-fold and patio doors in Kenilworth?

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

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Get the opening measured and the lintel checked: book a free survey in Kenilworth and we'll put it all in a written quote.