Timber Bifold Doors

Bespoke Timber Bifold Doors

Bifold doors transform the relationship between inside and outside. They fold open to create a wide, uninterrupted opening — connecting your kitchen, living room, or extension to a garden, terrace, or patio. At Prime Sash Windows, we manufacture bespoke timber bifold doors from 2 to 8 panels, built to your exact opening dimensions.

Unlike aluminium or uPVC alternatives, our timber bifold doors offer warmth, character, and authenticity. Engineered hardwood provides dimensional stability — no warping, no bowing — while delivering thermal performance that exceeds Building Regulations requirements.

Specification

• Panels — 2 to 8 panels. Maximum panel width 950mm.
• Timber — engineered Accoya or hardwood. 50-year rot guarantee (Accoya).
• Frame — 50mm face, 95mm depth. Leaf section 94mm × 65mm.
• Glazing — double glazed 4/16/4 (U-value 1.4) or triple glazed 4/12/4/12/4 (U-value 0.8).
• Security — PAS24 multi-point locking. Secured by Design option available.
• Threshold — Standard hardwood, aluminium low-profile, or flush aluminium.
• Colour — any RAL colour, full Farrow & Ball range. Dual colour (different interior/exterior) available.
• FENSA registered — Building Regulations self-certification on completion.

Guide Pricing

Guide prices from our online configurator (October 2026): supply only, excluding VAT and installation, standard specification (engineered timber, double glazing, white finish). Standard height 2100mm, £945 per m². Use our 3D configurator for an exact quote based on your specification, or read the full bifold doors price guide.

Timber vs Aluminium Bifold Doors

Aluminium bifolds dominate the mass market, but timber offers clear advantages for discerning homeowners. Timber is a natural insulator — it conducts heat 1,500 times less than aluminium, meaning fewer cold spots and lower energy bills. Timber can be repaired and refinished indefinitely, while aluminium cannot. And timber bifolds suit period properties, Conservation Areas, and Listed buildings where aluminium may not be acceptable.

Our engineered timber construction eliminates the warping risk associated with solid timber. Accoya — acetylated radiata pine — is dimensionally stable, rot-proof, and comes with a 50-year structural guarantee.

How It Works

• 1. Design online — Use our 3D configurator to design and price your bifold doors instantly.
• 2. Free survey — We visit your property, measure the opening, and confirm the specification.
• 3. Manufacture — Your doors are built in our workshop. Typical lead time 6–8 weeks.
• 4. Installation — Our FENSA-certified fitting team installs your doors.

Frequently Asked Questions

How much do timber bifold doors cost?

Guide prices start at about £3,570 for a 2-panel set 1.8 m wide and £7,140 for 4 panels at 3.6 m (supply only, excluding VAT and installation; standard specification from our online configurator, October 2026), priced at £945 per square metre. The bifold price guide lists sizes up to 8 panels.

How many panels can a bifold door have?

From 2 to 8 panels, each up to 950 mm wide, folding to the left or to the right.

Can I have a traffic door?

Yes. A traffic door opens on its own like a normal door without folding the rest; it sits on the opposite side to the fold.

Timber or aluminium bifold doors?

Timber insulates far better, can be repaired and refinished, and suits period properties; our comparison on this page and the bifold doors worth-it guide weigh up the costs over time.

Areas We Cover

We manufacture and install timber bifold doors across all London boroughs and Hertfordshire. Free site surveys within 25 miles of London. Our most active areas include Wandsworth, Chiswick, Richmond, Dulwich, Hampstead, Muswell Hill, Chelsea, Kensington, and St Albans.