How to tell it's the seal
Run the back of your hand round the edge of the closed window on a windy day. If you can feel air at the join between the opening sash and the frame, that's the gasket. If the cold is coming through the middle of the glass instead, that's a different problem — usually a failed sealed unit.
Perished, flattened or shrunk
Gaskets fail in three ways. They go hard and crack, they flatten permanently and stop filling the gap, or they shrink back and leave a gap at the corners. All three are fixed the same way — the old gasket comes out of its channel and new goes in.
Sometimes it isn't the rubber
A window that's dropped on its hinges won't seal however good the gasket is, because the sash isn't meeting the frame squarely any more. If that's what we find we'll sort the hinges, otherwise you'd have new seals and the same draught.
Trickle vents
Not every draught is a fault. Trickle vents are meant to let air in, and blocking them causes condensation and mould. If yours are stuck open or rattling we can fix that, but we'd rather sort the vent than seal up ventilation the house needs.
Get a price for your job
Free quotes, no call-out charge and no obligation. Ring us and describe the job, or send a photo and we'll come back to you.
Call 01922 894977 Request a quote
Certass registered · PWF Trusted Installer · £5m public liability · 40 years' experience
Common questions
Will new seals cut my heating bill?
They'll stop a specific draught and make the room noticeably more comfortable. Anyone promising a figure is guessing.
Can I just use self-adhesive foam strip?
It'll help for a winter. Proper gasket sits in the channel it was designed for and lasts years rather than months.
The draught is only in cold weather — normal?
Fairly. Materials contract in the cold and a marginal seal becomes a failing one. It's still worth doing.
Where we cover
draughty windows and worn seals across the West Midlands and the towns around it, including: