Northampton · Northamptonshire
Sliding Doors in Northampton
Sliding patio doors in Northampton give wide garden views through large panes and slim frames, and our glaziers survey your opening before you receive a fixed written quote.
- NN1
- NN2
- NN3
- NN4
- NN7
- Guide from £1,795
Aluminium sliding doors for homes and businesses in Northampton
In England, a replacement door with more than 60% of its 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. Large sliding doors in new extensions are assessed within the extension's energy calculations.
Lift-and-slide doors raise the panel off its seals when the handle is turned, so it glides easily, then lower it back onto the gaskets when closed. This allows very large, heavy panels with good weather sealing. Standard in-line sliders are lighter, simpler and usually cost less.
Sliding doors use large panels running on rollers within a multi-track frame. A two-panel door has one fixed and one sliding panel, while three or four-track systems let several panels stack behind each other for a wider opening. Panels can also slide into a wall pocket on some systems.
Making an opening wider for new sliding doors is structural work that needs building control approval and a correctly sized lintel or steel. Replacing doors in the existing opening is simpler. Flats, listed buildings and conservation areas may also need planning or other consent for the change.
What a typical job includes
- Made-to-measure sliding doorset in your chosen colour
- Toughened or laminated safety glass in every panel
- Fitting, levelling, roller adjustment and sealing
- Written guarantee terms and advice on building regulations sign-off
About Northampton for this job
- Postcodes covered
- NN1, NN2, NN3, NN4, NN7 and the surrounding area, including Wellingborough, Daventry and Rushden
- Coast
- Northampton is well inland, around 96 km from the nearest coast, so salt exposure is not usually a factor.
- Daylight and sun
- In Northampton the midwinter sun reaches about 14° above the horizon at noon, with roughly 7.5 hours of daylight, rising to about 61° and 16.5 hours in midsummer. Large sliding panes on south or west elevations can bring strong solar gain and glare, so solar-control or neutral low-E glass helps keep rooms comfortable. On north-facing elevations, high light-transmission glass and slim frames make the most of limited winter daylight.
- Access and setting
- Large sliding panels are heavy and long, so city installations need planned access through the house, parking nearby and sometimes lifting equipment for upper floors or balconies. Flats need freeholder consent and planning permission, and acoustic glass helps on busy roads.
- 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 Northampton
| Typical job | Guide price inc VAT |
|---|---|
| Aluminium slider, 1800 mm wide | £2,695 – £3,495 |
| Aluminium slider, 3000 mm wide | £3,995 – £5,095 |
| Lift-and-slide, 4000 mm wide | £6,695 – £8,595 |
| uPVC patio door, 1800 mm wide | £1,795 – £2,395 |
Get a guide price for your size
Approved Document Q applies to new homes in England, where doors and windows are expected to meet PAS 24 or an equivalent standard. It does not apply to replacements in existing homes, but PAS 24 products are still a sensible choice.
Specification choices
Lift-and-slide doors
Panels lift off their seals to glide, then drop to seal tightly when closed; suited to very large, heavy glass panels.
Slimline aluminium sliders
Very narrow frames and interlocks for the widest view, powder coated in a range of colours, suited to large openings.
Glass specification
Toughened low-E double glazing as standard, with triple glazing, laminated security glass, acoustic or solar-control glass available.
Sliding Doors in Northampton: questions
Do sliding patio doors need building regulations approval?
Yes. Fully glazed replacement doors like these are controlled fittings under building regulations, so the work must meet energy and safety glazing standards. In England, an installer registered with a competent person scheme can self-certify the installation, or building control approves it. Widening an opening is structural and needs separate approval. Other UK nations set their own requirements.
How long does it take to install sliding doors?
Replacing a typical set of sliding patio doors takes about a day on site, and large multi-panel or lift-and-slide systems can take longer, especially if lifting equipment is needed. The doors are made to order first, and the manufacturing lead time is confirmed in writing when you accept the quote.
Can sliding doors have a level threshold?
Yes, many sliding door systems offer a low or flush bottom track for near level access. They need good external drainage and some shelter, because a flush track is less weather resistant than a raised sill. On exposed elevations, a slightly raised threshold is often the more reliable choice, and the survey checks which suits your patio.
What guarantee comes with sliding patio doors?
Manufacturer guarantees apply to the frames, coating, rollers, locks and sealed units, and the terms are confirmed in writing. Cover for rollers can depend on regular cleaning, so read the conditions. Guarantee terms for the installation are set out in writing with your quote, so you know exactly what is covered before you go ahead.
Do you cover Northampton for sliding doors?
Yes. We can quote for sliding doors across Northampton and the surrounding Northamptonshire area, including postcode districts NN1, NN2, NN3, NN4 and NN7, and nearby Wellingborough, Daventry and Rushden. 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 Northampton
Free survey for new glazing, clear guide prices and one point of contact for every glazing job.