uPVC Window Replacement — Mechanism, Glass & Full Unit
uPVC Window Replacement — Mechanism, Glass & Full Unit
uPVC window replacement in Preston from £125. Three things commonly go wrong with a uPVC window: the locking mechanism wears out, a double-glazed unit fails (misted or cracked), or the whole frame needs replacing after damage or end-of-life. We handle all three — usually in a single visit.
What's included
- Survey and identification of the failure (mechanism, glass, or frame)
- Removal of the failed component
- Supply and installation of the replacement
- Adjustment and alignment of the new unit
- Full operational test and aftercare advice
- Disposal of the old window or component
Pricing
Window locking mechanism (espagnolette strip) replacement from £125. Sealed glass unit (single double-glazed pane) replacement from £195. Full uPVC window unit (frame + glass + lock) from £495. Per window — multiple windows in one visit attract a discount. No VAT and no call-out fee — the price you see is the price you pay. Parts and labour are included unless otherwise stated.
Frequently asked questions
How do I know if it's the mechanism or the glass?
If the handle is loose, won't lift, or won't lock — it's the mechanism. If the glass is misted, cracked, or you can see water between the panes — it's the sealed unit.
Can the glass be replaced without changing the frame?
Yes — a misted or broken double-glazed unit is replaced by removing the beading and swapping just the glass. The frame stays in place.
How long does a full window replacement take?
Typically 1–2 hours per window. We protect the area and clean up fully before leaving.
Will my new window match the others?
We match the colour, style and glazing pattern of your existing windows. Decorative or leaded glass can be ordered to specification.
Is the work guaranteed?
Yes — 12-month workmanship guarantee on installation, plus the manufacturer's warranty on the window unit itself (typically 10 years for sealed units).
Service area & guarantee
We serve Preston, Lancashire and the surrounding PR postcode area. Same-day and emergency appointments available. All work is carried out by a fully insured local locksmith — no national call-centre middlemen. All our work is backed by a 12-month workmanship guarantee.
Book online by selecting your option and adding to cart, or call us on 07786 917834 for advice and emergency callouts.