The details that are easy to miss are exactly where the real value of a quote is decided – and where unexpected costs can hide.
When you receive a quote for windows or doors, it is tempting to look only at the total price. But the details that are often overlooked are what decide whether the offer is truly good value or whether it will lead to unexpected costs later. This checklist works for evaluating any quote, regardless of supplier.
Check whether the quote covers the product itself, removal of the old window or door, auxiliary materials, installation and waste disposal. A lower price often means one of these items is excluded and will be charged separately later.
A reliable quote includes the profile manufacturer and model, the number of glazing chambers and the U-value, and the hardware manufacturer. If you only see “PVC window, standard glazing” without concrete data, ask for more detail.
The quote should state clear timelines for both manufacturing and installation. If the timeframe is missing or unclear, it can disrupt planning, especially if the window replacement is linked to other building work.
Check how many years of warranty apply to the frame, how many to the hardware, whether installation labour is covered as well as materials, and what the process is if a problem arises during the warranty period.
Delivery charges are sometimes added separately and can significantly affect the total if the site is far from the supplier’s base. Make sure they are either included in the price or listed clearly.
A serious quote usually includes a visual sketch with dimensions, not just a text description. This helps confirm that the offer matches exactly what you requested and prevents misunderstandings at the order stage.
Material prices can change, so it is important to know how long the quoted price is valid. This avoids surprises if the decision-making process is delayed.
Check point
Why it matters
Items included in the price
Avoid hidden extra costs
Technical parameters
Compare quotes by quality, not just price
Lead time
Plan other related work
Warranty terms
Know your long-term protection
Delivery costs
Avoid extra charges on the invoice
Drawing or sketch
Confirm it matches what you requested
Quote validity period
Avoid price changes if the decision is delayed
Received a quote and not sure how to evaluate it? Get in touch – we will be happy to help you understand what to look for, even if you ultimately choose another solution.
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