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NorthwestWindow Co.
Living room with a large sliding patio door looking over a garden to distant hills

Doors

Sliding patio doors

Big panes, slim frames and a view that stays with you all year. Doors that slide aside without taking up an inch of floor.

Doors

The view, uninterrupted

A sliding patio door has two or more large glazed panels, one or more of which slides behind the others. Because nothing swings or folds, the panels can be bigger and the uprights between them fewer, so you see more garden and less door.

They are a strong choice wherever space is tight on either side of the opening, for rooms with a view worth framing, and for anyone who wants plenty of light without rearranging the furniture around a door swing.

Large panes

Fewer, wider panels give the most glass and the slimmest sightlines.

No swing space

Panels slide within the frame, so furniture and planters can sit right beside the door.

Hooks and anti-lift

Multi-point hook locks and anti-lift blocks keep panels in the frame.

Toughened and insulated

Toughened low-E double glazing with brush and gasket seals.

Contemporary house with slim black aluminium glazing

uPVC or aluminium

uPVC sliding doors are the economical route and match our uPVC windows exactly, in the same eight colours. They suit openings of ordinary domestic size very well.

Aluminium is stronger, so panels can be taller and wider with narrower frames, and it can be finished in any RAL colour. For a wide opening on a new extension it is usually the better choice.

  • Two, three or four-panel layouts
  • Left or right sliding, or centre opening on four panels
  • Low thresholds available
  • Integral blinds available

Specification

The details, in full

Typical specification. We confirm the exact details for your order on the quotation.

Sliding patio doors specification
MaterialsuPVC or thermally broken aluminium
LayoutsTwo, three or four panels
GlazingToughened low-E double glazing
SecurityMulti-point hook locking with anti-lift protection
ColoursuPVC in eight finishes; aluminium in any RAL colour
Guarantee10 years on frames, 5 years on sealed units, 2 years on hardware

Questions

Good things to ask

Straight answers to the questions we hear most about this product.

Are modern sliding doors draughty?

No. The patio doors of the 1970s and 80s gave sliders a poor reputation. Modern doors have thermally efficient frames, double seals and precise rollers, and they comfortably meet current Building Regulations.

How much of the opening can I walk through?

On a two-panel door, roughly half. On three and four-panel doors it depends on the layout. If opening the whole wall is the priority, look at bifolds. If the view matters more, sliding doors win.

Do sliding doors need much maintenance?

Very little. Keep the bottom track free of grit with a vacuum or a soft brush and wipe the frames a few times a year.

Get a price for sliding patio doors

Tell us what you have in mind and we will come back with a clear, itemised quote. No pressure and no sales visit you did not ask for.