Doors
Aluminium sliding patio doors focused on sightlines, panel formats, thresholds, and performance for larger glazed openings.
Personalise Your Door
Door colour: Anthracite Grey
Standard colours
Inside and outside finishes can be discussed separately where the chosen range allows.
Sliding handle and lock finish
Sliding patio doors keep the visible hardware cleaner: handle finish, lock position, track format, bogie detail, and threshold are confirmed around the panel layout.
Made to measure. We show the relevant colour and hardware options during your survey before anything is finalised.
Sliding handle and lock finish
Sliding patio doors keep the visible hardware cleaner: handle finish, lock position, track format, bogie detail, and threshold are confirmed around the panel layout.
Made to measure. We show the relevant colour and hardware options during your survey before anything is finalised.
Specification Choices
Sliding door choices come down to how slim you want the frame to read, how the panels move, the threshold detail, and how the final cost is shaped. These are set out below before survey.
Sightline choice is often the main reason a homeowner prefers a slider over a bi-fold, so the page keeps that decision front and centre.
A standard sightline route keeps the system robust and balanced for family use while still delivering the broader glazed feel that makes sliders appealing.
Slimmer centre-line options reduce the visible aluminium through the meeting point and make the closed elevation feel more like uninterrupted glass.
Sliding doors are usually chosen because they preserve glass while avoiding swing space, so the panel format needs to suit the opening and the level of access required.
The classic two-panel format keeps the system straightforward: one fixed pane, one moving sash, and no inward or outward swing space needed.
Broader openings can be split into a fixed pane and two sliding leaves, widening the opening while preserving the cleaner frame rhythm that often makes sliders preferable to bi-folds.
On broader spans, a 4-panel multi-track layout lets leaves pass each other or part from the centre, opening more of the wall without moving into a folding-door format.
Sliding patio doors are quoted from a measured survey rather than a fixed panel price, because the cost is driven by how much glass the system has to move and how the opening is finished. These are the factors we price around.
Opening width, panel count, and track format (mono, dual, or triple)
Glass area and panel weight, supported up to 400kg
Sightline route: standard frame or the slimmer 45mm option
Glazing spec: double or triple, plus solar-control or acoustic glass
Threshold detail and finished floor levels
Colour route: stock powder coat, RAL, or dual-colour inside and out
Access, making good, and any structural preparation on site
Because these vary opening to opening, we confirm the specification at a free survey and give a fixed written quote rather than a panel-count guide price.
Opening details
Optional Upgrade
Sliding patio doors are chosen for big panes and clean garden views. Integral blinds keep that look neater than curtains or track-mounted blinds, giving privacy and glare control inside the glass without adding a second visible layer across the opening.
A clean option for wide rear glazing where privacy and glare matter every day.
Magnetic integral blinds
A slim magnetic slider raises, lowers, and tilts the blind inside the sealed glass unit.
Electric integral blinds
Remote operation suits larger panes, harder-to-reach glass, and cleaner contemporary rooms.
We compare integral blinds with standard glass, solar-control glass, curtains, and external shading so the final slider specification stays practical.
Ask about sliding door blind upgradesAluminium sliding patio doors are usually the better answer when the view through the glass matters every day, not only when the doors are fully open. For Romford and Essex homes, they suit kitchen extensions, rear living rooms, and garden-facing openings where large glass panels, no swing space, and a calmer closed-door view matter more than opening the whole wall. We survey the opening, track format, threshold, drainage, panel weight, sightline route, glazing, and furniture layout before recommending a 2-panel, 3-panel, 4-panel, or wider multi-track slider.
Slim 35mm interlock keeps the central meeting stile visually tight
Panel sizes up to 2000mm wide by 3000mm tall allow wider glazed openings with fewer frames
Class 3 air permeability, 6a water tightness, and C3 wind resistance on the tested platform
Acoustic performance up to 40dB with the right glazing specification
Thermally broken aluminium frame with 14mm to 36mm glazing compatibility
Colour-matched hardware and single or dual-colour powder coating available
How It Works
Step 1
We measure the structural opening, check the base and track run, compare internal and patio levels, and weigh up panel sizes and glass weight to confirm which sightline route and panel format suit the view.
Step 2
The frame is powder-coated to your chosen colour and the panels are built to the agreed format, with glazing, threshold, and locking locked to the measured opening and the confirmed panel weights.
Step 3
Our Cii team sets the track dead level, hangs and adjusts the sliding panels so they glide smoothly on the rollers, weather-seals the opening, and checks the lock and handover. Assure certification is provided where applicable.
Free Survey
Tell us the opening and the finish you want, and we will survey it, confirm the aluminium sliding patio doors specification, and give you a fixed written quote with no obligation rather than a generic estimate.
Before installation
The quote should cover the door set and the practical work around it: access, opening preparation, levels, planning checks, and what happens after the doors are fitted.
Straightforward slider replacements are usually fitted in one to two days once the doors are manufactured. Wider multi-track openings or structural changes are planned separately.
We check the aperture, lintel, base, and track run before confirming whether the existing opening suits the panel format you want.
Most like-for-like replacements do not need planning permission, but listed buildings, flats, and conservation areas should be checked first.
Keep the bottom track and rollers clear of grit, clean the powder-coated frames with mild soapy water, and rely on the Cii 10-year installation guarantee after handover.
Compare door types
The right garden door depends on whether you care most about the closed-glass view, the widest clear opening, or a simple hinged pair.
Best when the closed view matters most and you want large panes with no swing or fold space taken up.
“Thoroughly recommend this company. From the first call I was given really helpful advice and fitters came out the next day. The fitter was very knowledgeable and helpful, completed the job, and gave good advice on other areas we needed looking at. Will definitely use again and have no hesitation recommending them to friends and family.”
“Good price and hassle free. The doors look brilliant, exactly what we wanted. The fitters were friendly and left everything spotless.”
“Second time using CII for different properties. Easy process, good pricing, and the work was completed exactly as promised.”
Questions Answered
Where We Work
Based in Romford, we regularly work across Essex, North and East London, and into Hertfordshire. If you are not sure whether we cover your area, just give us a call.
Find Us
Phone
020 8500 9100Hours
Mon to Fri, 8am to 6pm
Free home surveys available across our coverage area.
Areas We Cover
Not seeing your area? Get in touch and we will let you know if we travel to you.
Get Started Today
Get a free, no-obligation quote from our team. We survey, advise, and install with a clear plan from first visit to final handover.
Mon-Fri 8am-6pm · No call centres · Speak directly with Ross
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