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

Prices based on standard height (2100mm), double glazing, white finish. Use our 3D configurator for an exact quote based on your specification.

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 8–10 weeks.
• 4. Installation — Our FENSA-certified fitting team installs your doors.

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.