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White uPVC sliding sash windows on a red-brick British country house
FOR YOUR HOME. FOR YOUR NEXT PROJECT.

uPVC sliding sash windows

Vertical sliding operation with proportions and detailing chosen around the character of the property.

Supply only or installationHomeowners & tradeSpecified around your opening
PLAN YOUR BUDGET

Product prices & optional extras

Made to your specification. Build a brief for a confirmed quotation.

Understand your options

ChoiceWhat to consider
Sash arrangementIdentify which sashes move and their useful opening positions.
Meeting railCompare its height and visible width on the actual elevation.
Period detailingReview horns, bars, joints and hardware as a coordinated design.
Cleaning featuresConfirm whether tilt-in or other access features are included in the exact system.

Proportions come before decorative extras

Take a straight-on photograph of the existing windows and note the meeting rail, pane proportions and surrounding masonry. A replacement with the wrong divisions can change the elevation even if it has decorative horns and a woodgrain finish. Compare the proposed frame and glass sizes rather than copying decorative details onto a different proportion.

Try the opening sequence

Ask to operate a relevant sample: release the catches, move each sash and return it to the locked position. Discuss reach and effort with the regular users. Any cleaning-release or tilt feature needs a demonstration and instructions; it should not be assumed from the generic sash-window name.

Survey the existing reveal

Older openings can have different internal linings, sill details and hidden junctions from a modern casement. Ask what removal and making good are included and how the frame position will be set. Establish any property restrictions before approving replacement; a heritage appearance is not consent.

White uPVC bay windows on a red-brick detached house at dusk

Apply it to your project

ILLUSTRATIVE SCENARIO

A terrace has three matching front windows but different internal floor and sill conditions. Keep the exterior proportions coordinated while surveying each opening independently. Treat a repeated visual design as three measured locations, not one size multiplied by three.

Questions before you choose

Is a sliding sash the same as a flush sash?

No. Sliding sash describes vertical movement; flush sash describes the closed relationship between sash and frame, usually on a casement.

Will every sash tilt inward for cleaning?

Do not assume it. Ask which cleaning features are included and how they should be used safely.

Research references

Manufacturer and technical references checked 12 October 2026. They establish market options, not a Bifoldsandmore supply partnership or a specification for your opening.

Useful tools already on the site

Compare quotations →Prepare measurements →Use the site survey tool →

Use the glazing builder to save your uPVC specification and optional extras, or send us your opening schedule for a project quotation.

LET’S GET THE DETAILS RIGHT

One opening or a whole house?

Send us the styles you like, your approximate sizes and site postcode. Tell us whether you need supply only or installation, and we’ll help you put the next steps in order.

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