uPVC Windows
Energy-efficient, made-to-measure casement & tilt-and-turn windows, professionally fitted.
Learn more →Family-run in the Forest of Dean · Est. 30+ years
Crystal-clear views, crafted for thirty years.
Local, honest double glazing in Cinderford — uPVC windows, doors, conservatories and fast misted-unit replacement across the whole Forest of Dean.
★★★★★ 5.0 from local customers
· 5-yr glass & 10-yr frame guarantees
30+years
local
local
Building-Regs certified
5 & 10-year guarantees
Family-run, since the 1990s
Free, no-obligation quotes
What we do
Every glazing job, handled by one trusted local team
From new windows and doors to a single foggy pane — we make our own sealed units, so you get the right glass, faster.
Doors
Composite, uPVC, French & patio doors — secure, warm and beautifully finished.
Learn more →Sash & Vertical Sliders
Classic sliding sash looks with modern, draught-free uPVC performance.
Learn more →Misted / Sealed Units
Foggy windows? We replace just the sealed glass unit — clear views again, fast and affordable.
See how it works →Conservatories
Bright, usable extra space — new builds, re-glazing and warm-roof upgrades.
Learn more →Bespoke & Stained Glass
Decorative, leaded and stained glass made and repaired to your design.
Learn more →Mirrors & Glass Cut to Size
Made-to-measure mirrors, table tops, shelves and replacement glass, cut and bevelled.
Learn more →Fascia & Guttering
uPVC fascias, soffits and guttering to finish and protect your home.
Learn more →
Our most-requested repair
Foggy, misted windows? You probably don't need new frames.
When condensation appears between the glass, the sealed unit has failed — not the whole window. We replace just the glass unit, so you get clear views back quickly, at a fraction of the cost of replacement windows.
- Keep your existing frames — far cheaper
- We manufacture our own sealed units — quick turnaround
- Warmer, clearer, more energy-efficient glass
- Backed by our 5-year glass guarantee
Why Seal Glass
The local name homeowners actually recommend
We're a genuine Cinderford family business — not a national salesforce. Three decades of work across the Forest of Dean, and most of it comes from word of mouth.
30+years' experience
5.0average rating
5yrglass guarantee
10yrframe guarantee
Recent work
Glazing we're proud of
★★★★★ rated locally
What our Forest of Dean customers say
★★★★★
“Knowledgeable staff, quick and efficient window replacement — they left the room cleaner than before.”
— Local customer, Cinderford★★★★★
“Efficient and reliable. Quoted on the Wednesday and fitted by the Friday.”
— Verified review★★★★★
“Responsive after another company let us down — quoted and repaired within 48 hours, even before Christmas.”
— Forest of Dean homeownerWhere we work
Proudly serving the whole Forest of Dean
CinderfordColefordLydney
MitcheldeanNewnhamDrybrook
RuardeanLittledeanWestbury-on-Severn
Ross-on-WyeGloucesterAll areas →
Good to know
Frequently asked questions
Can you replace just the misted glass, not the whole window?+
Yes. In most cases we replace only the sealed glass unit and leave your existing frames in place — it clears the misting fast and costs far less than new windows.
Are you registered / is the work certified?+
All replacement window and door installations are carried out to current Building Regulations and registered under a competent-person scheme, so your work is properly certified.
How quickly can you come out?+
We're known for fast turnaround across the Forest of Dean — many customers are quoted within days and fitted soon after. Call 01594 829458 for a free quote.
Which areas do you cover?+
Cinderford, Coleford, Lydney, Mitcheldean, Newnham, Drybrook and the wider Forest of Dean and Gloucester area.
What guarantees do you offer?+
A 5-year guarantee on glass and a 10-year guarantee on uPVC frames.
Do you give free quotes?+
Yes — every quote is free and no-obligation. Request one below or call 01594 829458.
Free & no-obligation
Get your free quote
Tell us what you need and we'll be straight back to you. Prefer to talk? Call 01594 829458.