A simple checklist to help you compare glazing quotes fairly and avoid surprises.
Request the precise frame material, glazing specification, glass thickness, spacer bar type, and hardware included in each quote. Two quotes that appear similar in price can differ significantly in specification, so having this detail in writing is the only reliable way to compare like-for-like rather than relying on a headline total.
Clarify whether the quote includes removal and disposal of old frames, making good internally, external finishing, and any structural work identified. Some quotes look cheaper because they exclude items that others include as standard, so ask each company directly what is and isn't covered by their price.
Confirm whether the company is FENSA or CERTASS registered and that you will receive the relevant certificate after installation. This is a straightforward but important question, as it confirms the legal compliance of the work and protects you when you come to sell your home.
Ask how long the guarantee lasts for the frame, glazing and hardware separately, whether it is insurance-backed, and what routine maintenance is required to keep it valid. Guarantee terms vary considerably between companies and can be a meaningful factor in overall value, not just an afterthought.
Find out a realistic lead time from order to installation, how long the installation itself is expected to take, and what happens if unforeseen issues arise during fitting, such as discovering damaged brickwork. A company that gives clear, specific answers is generally more trustworthy than one offering vague reassurances.
Ask to see examples of similar past installations, whether photographs or details of comparable projects, and how long the company has been trading in your area. This gives you a better sense of their experience with projects similar to yours, beyond just the numbers on the quote.
Two or three quotes is generally a sensible number, giving you enough to compare fairly without the process becoming overwhelming. Focus on comparing specification and inclusions carefully rather than simply picking the cheapest headline figure.
Not necessarily, but you should ask exactly why it's cheaper, whether that's a lower specification, fewer inclusions, or simply a more competitive labour rate. A significant unexplained gap between quotes is worth querying directly with each company.
No, a reputable installer will expect and welcome detailed questions, as it shows you are taking the decision seriously. If a company seems reluctant to answer clear questions about specification or inclusions, treat that as a warning sign.
Yes, always ensure your final quote, specification and any verbal promises are confirmed in writing before you sign a contract. This protects both you and the installer if there is ever a dispute about what was agreed.
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Request a fixed written quote from us and use our checklist to compare it fairly against others.
