Crowthorne · Berkshire
Bifold Doors in Crowthorne
We cover Crowthorne and the rest of Berkshire for bifold door supply and fitting, from a three-panel set for a kitchen to wide multi-panel openings.
- RG45
- GU47
- RG40
- Guide from £3,595
About folding patio doors in Crowthorne
In England, replacement doors with more than 60% of the internal face glazed should achieve a U-value of 1.4 W/m²K or a Doorset Energy Rating of band C under Approved Document L. New openings in extensions are assessed with the whole extension, and large glazed areas may need energy calculations.
Creating a new bifold opening in an external wall is structural work that needs building regulations approval and a correctly sized lintel or steel beam. Replacing existing doors in the same opening is simpler. Planning permission may also be needed for new openings in listed buildings, flats or conservation areas.
Security on bifold doors comes from multi-point locks on the traffic door, shoot bolts top and bottom on the folding panels, internally glazed beads, anti-lift track design and hinges that cannot be removed from outside. Ask whether the system has been tested to PAS 24 and fit an anti-snap cylinder.
Thresholds range from a raised weathered sill to a low or flush threshold for level access between floor and patio. Low thresholds rely on drainage outside, such as a slot drain, and some shelter from driving rain. The right choice depends on exposure, patio levels and how the doors are used.
What a typical job includes
- Survey of the opening, support above and floor levels
- Written guarantee terms and advice on building regulations sign-off
- Made-to-measure bifold doorset in your chosen colour
- Fitting, levelling, adjusting and sealing the frame
Working in Crowthorne
- Postcodes covered
- RG45, GU47, RG40 and the surrounding area, including Sandhurst, Yateley and Camberley
- Coast
- Crowthorne is well inland, around 59 km from the nearest coast, so salt exposure is not usually a factor.
- Daylight and sun
- In Crowthorne the midwinter sun reaches about 15° above the horizon at noon, with roughly 7.6 hours of daylight, rising to about 62° and 16.4 hours in midsummer. A wide bifold opening on a south or west-facing wall brings in strong sun and can overheat a room, so solar-control glass or integral blinds may help. North-facing bifolds benefit from high light-transmission low-E glass to make the most of winter daylight.
- Access and setting
- Rural gardens often slope or sit lower than the floor, so threshold height and drainage need careful planning. Exposed open sites benefit from stiffer aluminium systems, raised thresholds and outward-opening doors that seal against the wind.
- Rules in England
- Approved Document K requires safety glass in critical locations in England: glazing in doors and in side panels within 300 mm of a door, up to 1500 mm above floor level, and any glazing in walls or partitions up to 800 mm above floor level.
Guide prices in Crowthorne
| Typical job | Guide price inc VAT |
|---|---|
| Aluminium bifold, 2400 mm wide | £4,295 – £5,495 |
| Aluminium bifold, 3000 mm wide | £5,095 – £6,595 |
| Aluminium bifold, 4800 mm wide | £7,495 – £9,595 |
| uPVC bifold, 3000 mm wide | £3,595 – £4,595 |
Get a guide price for your size
Replacing windows and doors with similar ones is usually permitted development for houses in England. Flats, listed buildings and homes in conservation areas or covered by an Article 4 direction can need permission, so check with the council first.
What you can choose
Panel configuration
From two to seven or more panels, folding left, right or splitting both ways, with or without a separate traffic door.
Aluminium bifolds
Slim, stiff thermally broken panels that carry large glass units, powder coated in a wide range of colours and finishes.
uPVC bifolds
A lower-cost option with bulkier frames, suited to smaller openings with fewer panels, available in white, grey and woodgrain foils.
Bifold Doors in Crowthorne: questions
Do bifold doors leak or let in draughts?
Well-made bifold doors fitted level and square should keep out wind and rain, but they rely on accurate installation, a sound lintel and working drainage. Leaks usually come from blocked track drainage, a flush threshold on an exposed elevation or panels that have dropped out of adjustment. Keeping the tracks clean prevents most problems.
Are bifold doors secure?
Good bifold doors are secure when the traffic door has a multi-point lock and anti-snap cylinder, the other panels have shoot bolts top and bottom, the glass is internally beaded and the hinges and track resist lifting. Ask whether the system has been tested to PAS 24, and consider laminated glass for ground-floor doors.
Can bifold doors have a level threshold?
Yes, most bifold systems offer a low or flush threshold for near level access between inside and out. It works well with a drainage channel outside and some shelter from wind-driven rain, because a flush track is less weather resistant than a raised sill. The glazier checks the patio and floor levels and exposure at survey.
How much do bifold doors cost?
The cost of bifold doors depends on the opening width and height, number of panels, material, colour, glass, threshold type and the condition of the opening. Aluminium usually costs more than uPVC, and wider sets, triple glazing and special finishes add more. See the guide prices for typical ranges; the written quote fixes the price for your specification.
Do you cover Crowthorne for bifold doors?
Yes. We can quote for bifold doors across Crowthorne and the surrounding Berkshire area, including postcode districts RG45, GU47 and RG40, and nearby Sandhurst, Yateley and Camberley. Start with your postcode on the quote form and a glazier will arrange a free survey before giving you a written quote.
Get a written quote in Crowthorne
Free survey for new glazing, clear guide prices and one point of contact for every glazing job.