Replacement quotes, matched to your window type

A window is not a window when it comes to price. The frame style, the number of opening sashes, the size of the glazed area and the way the unit sits in the wall all change what an installer has to supply and fit — and that is exactly what shifts a quote up or down. Ask for a generic “window replacement” figure and you will get a generic answer; ask by type and you get numbers you can actually compare.

This hub is the map for the whole site. Pick your window type below to read a page written around how that style is measured, what the quote should include and where people commonly over- or under-spec the job.

Why the window type changes the quote

Three things move the price more than almost anything else. First, the frame style: a simple fixed or side-hung casement is quicker to make and fit than a mechanical sliding sash or a multi-panel bay. Second, the opening arrangement — every openable sash adds hinges, handles, seals and labour, so a two-panel bay that all opens costs more than the same bay with one vent. Third, the glass specification: standard A-rated double glazing, acoustic units, toughened safety glass near doors and low floors, or triple glazing all carry different costs.

Because those variables stack up, a quote built around your actual windows is far more accurate than a price per window pulled from thin air. It also protects you at survey stage, when a vague quote can suddenly grow once the fitter sees what is really there.

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Choose the type you are replacing

Each guide covers measuring, like-for-like versus upgrade options and the quote checklist for that style.

• Casement window replacement — the UK’s most common style, hinged at the top or side.
• Sash window replacement — vertical sliding sashes for period and Victorian homes.
• Bay window replacement — angled or square multi-panel bays measured as a set.
• Patio & French door replacement — sliding and hinged doors quoted alongside your windows.

Not sure it is the whole window?

Sometimes only part of the window has failed. If your frames are sound but the glass has fogged, our guide on misted double glazing replacement explains when a new sealed unit is enough. If you are weighing up glass-only against a full replacement, read replace the glass or the whole window? before you commit to anything. For a like-for-like match on an older property it also helps to compare window styles to replace like-for-like, and if you are still deciding whether to mend or renew, this guide on repair or replace — how to decide is a sensible next read.

What every quote should cover

However you replace, a good quote is itemised. It should spell out removal and safe disposal of the old units, the frame material and colour, the glass specification and energy rating, the fitting and making good of plaster and sills, and the guarantee. Prices vary widely by region and specification, so treat any single figure as a starting point. When you are ready to line up numbers, you can get a fast quote direct, no showroom, or browse the current double glazing deals and prices to get a feel for the market.

Funding and contribution options may be available subject to eligibility and a home survey, and £0-upfront options may be available for those who qualify. The quote and home assessment are always free and carry no obligation.

Ready to get numbers that fit your windows? Tell us the type and your postcode and we will match you with vetted installers covering your area.