Toughened, laminated and obscure glass
Toughened (safety) glass is required by Building Regulations in doors and low-level windows. Laminated glass adds security and noise reduction. Obscure (patterned) glass is used where privacy matters, like bathroom windows, without losing light — worth specifying which you need per opening rather than assuming standard clear glass throughout.
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.
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.
How the quote and survey process works
An initial quote is usually based on rough measurements and photos; a firm price follows an in-person survey, since window openings in older properties are rarely perfectly square or a standard size. Made-to-measure lead times are typically 2-6 weeks after survey, before installation is booked in.
Do you need a certificate to sell your house?
Conveyancing solicitors routinely ask for the FENSA or CERTASS certificate for any window or door replacement done during your ownership. Without it, you may need a retrospective building control inspection, which can hold up a sale — keep the certificate with your house paperwork when the work's done.
Common window and door jobs
Window specialists handle full window replacement, double glazing unit repairs (a fogged unit usually means a failed seal, not the whole frame), door replacement, conservatories, and draught-proofing. Composite and bifold doors are increasingly common alongside standard uPVC window replacement.
Window regulations, FAQ
Do I need a certificate for a single window replacement? Yes, the same Part L rules apply whether it's one window or the whole house. Can I fit my own windows? Technically yes, but you'd then need a separate council building control inspection, which most installers' FENSA/CERTASS registration avoids automatically.
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.