French doors vs other door styles
French doors suit a more traditional look and a narrower opening than bifold or sliding doors, but both leaves typically need to open for full access, unlike sliding or bifold options. The right choice often comes down to the room layout and how the space is actually used day to day.
What a good window quote should include
A proper quote should state frame material and colour, glazing spec, whether old windows/frames are removed and disposed of, the FENSA/CERTASS certificate, and the guarantee length on both frames and glazing units, which can differ.
Draught-proofing vs full replacement
If the frame and seals are otherwise sound, draught-proofing strips and secondary glazing can meaningfully cut draughts without full replacement — worth considering before committing to new windows, particularly on a period property where replacement is restricted anyway.
Do you need planning permission for new windows?
Like-for-like replacement usually doesn't need planning permission. Adding a new window opening, especially on a side elevation close to a boundary, or in a conservation area or listed property, often does. Check before ordering if you're changing an opening rather than replacing what's already there.
Window and door guarantees, what to check
Frame guarantees commonly run 10 years, glazing unit guarantees are often shorter — ask specifically, since a failed seal (misting between panes) is a glazing unit issue, not a frame issue, and needs to be covered by the right guarantee. Installation workmanship guarantees are usually separate again.
Background checks and identity verification
Before booking, check an installer's registration number directly on the FENSA or CERTASS website, not just take their word for it — window and door sales has historically had more than its share of doorstep sales pressure, so independent verification is worth the two minutes it takes.
Emergency glazing and boarding up
For a broken window (break-in, accident, storm damage), boarding up is usually a same-day emergency service separate from full replacement, which follows the normal survey-to-fitting timeline. Ask specifically about emergency call-out availability if security is an immediate concern, not just repair timing.
Red flags in a cheap window quote
A quote well below others is worth questioning — check it specifies the same glazing spec (U-value), includes the FENSA/CERTASS certificate, and covers disposal of old windows. High-pressure doorstep sales tactics and "today only" pricing are worth treating with real caution in this trade specifically.