Misted Double Glazing in Castleford — Replacement Sealed Units from PTF Glass
A window that’s clouded over with a misty film sealed inside the glass is a blown double glazed unit — the seal has failed and moisture is trapped between the panes where no cloth can reach. It’s a common problem in Castleford homes, and the fix is a single made-to-measure replacement unit. PTF Glass manufactures these units at our Bramley workshop and supplies them to Castleford ready for you or your glazier to fit.
Blown Units Across Castleford
Castleford, where the Aire and Calder meet in the south-east of the district, has a large stock of former mining and mill housing — solid terraces and inter-war semis around the town centre, Glasshoughton and Airedale, alongside newer estates built around the Xscape and Junction 32 developments. Much of the established housing was double glazed a generation ago, and that’s the era of sealed unit now reaching the point where the original edge seals fail and the glass blows.
The cause is always the same. A double glazed unit keeps a dry, gas-filled cavity sealed between two panes. When the perimeter seal wears out through age and weather, the gas escapes and damp air takes its place, condensing on the inner glass into a foggy haze. It can’t be cleaned away, dried out or re-sealed in place — the only permanent answer is a new factory-sealed unit cut to the same dimensions.
Supplying Castleford from Bramley
PTF Glass manufactures in Bramley, Leeds (LS13 4EN), an easy run from Castleford along the motorway network. Measure your failed unit, send us the sizes and glass type, and we make a matched replacement. Collect it from Bramley at no extra cost, or ask for a delivery price into Castleford when you order. Because we make the glass ourselves, you get a direct price for the finished unit — no national franchise margin and no subcontractor.
If you have several blown units, which is common once glazing reaches this age, ordering them together usually works out more economical than one at a time.
Only the Glass Is Replaced
The point that saves Castleford homeowners the most money: a misted window almost never needs a whole new window. The frame — uPVC, timber or aluminium — is usually still sound. It’s the sealed glass unit that has failed, and that single part is all you replace. A new unit, made to your measurements and matched to the existing glass and spacer, drops straight back into the frame once the beading is removed.
Fit it yourself if you’re handy, or have any Castleford glazier fit a unit ordered through us. Our cost of replacing a double glazed unit guide shows typical prices by size so you know what to budget.
How to Spot a Blown Unit
- A foggy or milky haze sealed between the panes that won’t wipe off
- Water droplets or a tide-mark visible inside the glass on cold mornings
- A pane that feels colder than the rest of the room, where gas has leaked
- A dull, cloudy window however thoroughly you clean it
If the moisture is on the room-facing surface — the side you can wipe — it’s more likely a ventilation issue than a blown unit. Our condensation in double glazed windows guide explains the difference, and our double glazing wet inside guide covers the wetter, dripping cases.
Why Castleford Chooses PTF Glass
PTF Glass has made and supplied glass across Leeds and West Yorkshire since 2008 — over 15 years — with a 4.8 out of 5 rating from 47 Google reviews. Every replacement sealed unit carries our own 5-year guarantee against sealed-unit failure, plus the Eurocell 10-year manufacturer guarantee on windows. Fixed prices, made-to-measure manufacturing and honest, no-pressure advice. The full service is set out on our misted unit replacement page.
Get a Price for Your Castleford Replacement Unit
Send us the sizes of your blown unit and we’ll give you a clear, no-obligation price for a made-to-measure replacement — ready to collect from Bramley or for delivery into Castleford.
Frequently Asked Questions
Do you supply replacement units across Castleford, including Glasshoughton and Airedale?
Yes. We make made-to-measure replacement sealed units across Castleford and its surrounding areas including Glasshoughton, Airedale and Allerton Bywater. Units are made at our Bramley base (LS13 4EN) for free collection, or we can arrange delivery — ask for a price when you order.
How do I know it’s a blown unit and not just dirty glass?
If the haze sits between the two panes and you can’t reach it from either side, the unit has blown — surface dirt cleans off, trapped misting doesn’t. Cleaning the inside and outside faces and finding the cloudiness still there confirms it’s a failed seal needing a new unit.
Is replacing the unit cheaper than a new window?
Yes, usually by a large margin. The frame stays in place and only the glass unit is replaced, so you avoid the cost and disruption of a full window. Our cost guide gives typical figures by unit size.
How long will my Castleford unit take?
Standard clear units are typically ready within 7–14 working days for collection from Bramley or delivery into Castleford. Toughened or specialist glass can take a little longer.
Do you fit the glass?
No — PTF Glass supplies the made-to-measure unit only. You or your own glazier fit it into the existing frame. Single units usually drop straight in once the beading is removed, and any local Castleford glazier can fit a unit you’ve ordered from us.