Getting like-for-like window quotes

A quote only tells you something useful when you can hold it against another. Yet window quotes are notoriously hard to compare, because installers often price slightly different products, glass, hardware and guarantees. The fix is to force a genuine like-for-like comparison: give every installer the same brief, and read each quote for the same details. Do that, and the numbers finally mean something.

Write the brief down once

Before you speak to anyone, note the job in plain terms: how many windows and doors, the rooms, the frame material and colour, the glazing, and the finish date you would like. Hand that same note to every installer. The moment one of them prices triple glazing while another prices standard double, your comparison is broken. Our guide to what to tell an installer covers the details worth pinning down before the surveys begin.

Compare the specification, line by line

When the quotes arrive, put them side by side and check the specification, not just the total. Look at the frame profile and energy rating, the glass unit and any coatings, the locking and security rating, trims and sills, and whether making good the plaster or render is included. A higher price with a better specification and a longer guarantee can be far better value than the cheapest headline figure. If it helps to see how a detailed specification is built, read about getting professional-grade window specs quoted.

Weigh the things that are not the price

Two genuinely like-for-like quotes may still differ on guarantee length, lead time, deposit protection and how established the company is. Those factors are part of the value. An insurance-backed guarantee that outlives the firm, a realistic installation date, and protection for any deposit you pay all count for something. Treat the price as one column among several, and the right choice usually becomes clear.

A quick comparison checklist

When you sit down with your quotes, a short checklist keeps the comparison honest. Confirm that every quote lists the same number of windows and doors, the same frame material and colour, and the same glazing and energy rating. Check that each includes making good, the removal and disposal of your old frames, and any scaffolding or access equipment. Compare the guarantee length and whether it is insurance-backed, the deposit terms and their protection, and the promised installation window. Note how responsive each company was and whether the surveyor explained things clearly. When those columns line up, the price difference that remains is one you can trust, and the decision becomes far less daunting.