Grantham · Lincolnshire
Sliding Doors in Grantham
We cover Grantham and wider Lincolnshire for sliding patio doors in aluminium and uPVC, from two-panel replacements to large multi-track and lift-and-slide systems.
- NG31
- Guide from £1,795
Sliding patio doors for homes and businesses in Grantham
Sliding door panes reach near the floor, so they need safety glass. In England, Approved Document K treats glass in doors, and in side panels within 300mm of a door's edge, up to 1500mm from the floor as critical. Toughened glass is standard; laminated adds security and holds together if broken.
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.
Security on sliding doors depends on multi-point hook locks that grip the frame, anti-lift blocks that stop panels being lifted off the track, internally glazed beads and an anti-snap cylinder. Older patio doors without anti-lift protection can sometimes be lifted out, so ask whether the system is tested to PAS 24.
Included as standard
- Made-to-measure sliding doorset in your chosen colour
- Toughened or laminated safety glass in every panel
- Written guarantee terms and advice on building regulations sign-off
- Removal and disposal of the existing doors
Local details for Grantham
- Postcodes covered
- NG31 and the surrounding area, including Sleaford, Newark-on-Trent and Melton Mowbray
- Coast
- Grantham is well inland, around 44 km from the nearest coast, so salt exposure is not usually a factor.
- Daylight and sun
- In Grantham the midwinter sun reaches about 14° above the horizon at noon, with roughly 7.3 hours of daylight, rising to about 60° and 16.7 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
- Rural patios are often uneven or sit below the floor, so threshold height, drainage and level tracks need careful planning. Exposed sites benefit from stiffer frames, robust weather seals and laminated glass, as homes may be some distance from neighbours.
- 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 Grantham
| 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
In England, replacing a whole window, roof window or glazed external door is building work. It has to be notified to building control, either by an installer registered with a competent person scheme such as FENSA or Certass, or through a building notice to the council. Replacing only the glass in an existing frame is a repair and is not notifiable.
Choosing your sliding doors
uPVC patio doors
A lower-cost in-line sliding door with chunkier frames, available in white, grey and woodgrain foils for standard openings.
Flush or low threshold
A low-profile bottom track for near level access, paired with external drainage and used where there is some shelter.
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.
Sliding Doors in Grantham: questions
Are sliding doors better than bifold doors?
Neither is better for every home. Sliding doors suit people who want large panes, slim frames and an uninterrupted view when the doors are closed. Bifold doors suit people who want to open almost the full width in summer. Sliding doors also take no space inside or out when opened, which helps on small patios and balconies.
What maintenance do sliding patio doors need?
Sliding patio doors need regular cleaning of the bottom track and drainage slots, a wipe of the frames with mild soapy water and occasional checks of the brush seals and locks. Avoid oiling the track, which attracts grit. If a panel starts to drag, roller adjustment is usually a short job for a glazier.
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.
How much do sliding patio doors cost?
The cost of sliding patio doors depends on the width and height, the number of panels and tracks, aluminium or uPVC, standard or lift-and-slide hardware, colour, glass and threshold. Large slimline aluminium systems sit at the upper end. See the guide prices for typical ranges; the written quote fixes the price for your exact specification.
Do you cover Grantham for sliding doors?
Yes. We can quote for sliding doors across Grantham and the surrounding Lincolnshire area, including postcode districts NG31, and nearby Sleaford, Newark-on-Trent and Melton Mowbray. 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 Grantham
Free survey for new glazing, clear guide prices and one point of contact for every glazing job.