A useful quotation identifies each window, the faults found, the work proposed and what is excluded. Ask for repair, glazing, draught proofing and decoration to be described clearly enough that you can compare like-for-like proposals.
Give every window a reference
Use simple labels such as “front bedroom, left window” or W01, W02 and W03. Take one overall photograph for each reference and note which rooms and floor levels are involved. This avoids confusion where several similar windows need different work. Keep a copy of the schedule with the quotation.
What should the survey record?
- The condition of the case, sill, sashes and visible joints.
- Operation of the upper and lower sashes.
- Cords, pulleys, weights, fasteners and restrictors where inspected.
- Glass, putty and perimeter seals.
- Existing shutters, surrounds and decorative details to retain.
- Areas not accessible or not inspected, and the consequences for the estimate.
Ask for a clear scope
“Overhaul” and “full restoration” can mean different things in different quotations. Ask which parts are being renewed, which are being repaired and which are being left alone. Where timber repairs are proposed, ask how their extent will be confirmed. Where glass is being changed, ask for the type and thickness and how historic glass will be treated.
If draught proofing or secondary glazing is included, ask for an explanation of the ventilation strategy and how the finished window will be cleaned and maintained. If painting is included, establish whether it covers preparation, primer and finish coats, and which faces of the window will be treated.
Check the practical details
Clarify access equipment, protection of furnishings, waste removal, working hours, security while work is underway and making good. Ask how long each window may be unavailable and whether any work is carried out away from the property. Confirm the basis of the price, applicable VAT, payment stages and any warranty terms in writing.
How should hidden damage be handled?
Agree an approval process before work begins. A sensible record identifies the newly exposed defect, provides photographs, explains the additional work and states the price or pricing basis. This is more useful than a general statement that extras may apply. Ask whether work can pause safely while a decision is made.
What should you retain afterwards?
Keep the final window schedule, invoices, photographs, product details and maintenance instructions. Where permissions were required, keep the approved drawings and relevant correspondence with the project record. This provides a useful starting point for later repairs, repainting or a future property sale.
Related advice and services
- What affects sash window repair costs
- Listed building and conservation window service
- How to assess repair and replacement options
Back to all sash window resources
Discuss your windows
For a property in Stirling or Central Scotland, contact The Sash and Case Window Company with photographs and a description of the problem. An inspection can establish which work is appropriate for your windows.