What’s included in a window quote
A line-by-line window quote breakdown, so you know exactly what a proper quote should spell out — and what a vague one quietly leaves for later.
A good window quote is a contract in waiting. Every figure on it, and every line that is missing, decides what you actually get for your money. The trouble is that a headline price of “six windows fitted” can hide wildly different products and standards of workmanship. This window quote breakdown walks through each part a complete quote should contain, so you can tell a thorough one from a thin one at a glance.
The frames and glass specification
This is the heart of the quote and the part vague sellers skate over. It should name the frame material (uPVC, timber or aluminium), the profile or system, the colour and finish, and the exact glazing — double or triple, the energy rating, and any acoustic or toughened glass. “A-rated windows” is a start, but a proper quote states the U-value and the specific units. If you are unsure what any of it means, our jargon explained guide translates the labels, and reading up on energy ratings explained helps you judge one glass spec against another rather than trusting a sticker.
Fitting, removal and making good
Windows do not float into place. A complete quote itemises taking out the old frames, disposing of them, fitting the new units, and “making good” — the plastering, sealing and finishing that leaves the reveal tidy inside and out. If a quote lists a product price but says nothing about making good, ask whether it is included or a later surprise. Reputable installers spell this out; it is one of the quickest ways to tell a full quote from a bare one.
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Get my free quote →Guarantee, certification and building regs
Replacement windows are notifiable work under building regulations, so your quote should include the FENSA or Certass certificate that proves compliance — you will need it when you sell. It should also state the length of the guarantee, exactly what it covers (frames, glass, hardware and the fitting), and whether it is insurance-backed so it still stands if the company stops trading. A ten-year guarantee that is not insurance-backed is worth less than it looks.
The total price, VAT and any options
The bottom line should be the full price including VAT, with any deposit and payment stages set out clearly. If the installer offers ways to spread the cost, those should be listed as options, not baked into a confusing single figure. Any funding and contribution options are subject to eligibility and a home survey, so treat them as a separate line rather than a headline discount. To sanity-check whether a total is fair, it helps to understand what windows actually cost and how much of the price is product versus labour.
Timescales in writing
A complete quote gives you a lead time — roughly how long from order to fitting, and how many days the job will take. This is genuine logistics, not a sales countdown: installers in many areas have survey appointments this month, and knowing the timeline lets you plan around it. Vague timing is a small red flag; our quote red flags guide covers the others.
Quick test: a quote you can read and understand in five minutes — product, fitting, guarantee, price, timing — is a good sign. One that needs a phone call to explain what you are actually buying is not.
How to use this breakdown
Once you know what a full quote contains, comparing offers becomes far easier. Head back to the hub on how to compare window quotes to line yours up like for like, then run each through the window quote checklist before you sign. And if you have not gathered your first quote yet, that is the place to start.
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