Insulating frames
Multi-chamber uPVC frames trap air and slow heat loss, where timber leaks and aluminium conducts.
Why uPVC?
Warmer rooms, lower running costs.
Most of a home’s heat slips out through old windows. uPVC frames and double glazing keep that warmth where you want it — in the room.
The problem
Old windows let your heat escape.
Single-glazed windows in old timber or aluminium frames lose warmth fast — through the thin glass, through the frame, and through the gaps around them. That's the cold spots, the draughts, and the heater that runs all evening without ever quite warming the room. And every bit of heat that escapes is money — you've paid to create that warmth, and it's going straight out the window.
- Cold spots by the windows
- Draughts you can feel
- Rooms slow to warm up
- Heating that runs and runs
The fix
How uPVC keeps the heat in.
Double glazing
Two panes and a sealed gap keep far more warmth in than single glazing ever could.
Sealed and tight
Multi-point seals pull the window tight to the frame, shutting out the draughts that make a room feel colder than it really is and keeping the warmth where you want it.
Good to know
Frequently asked questions
Will new windows really make my house warmer?
Yes. uPVC frames and double glazing slow the heat loss that old joinery lets through, so rooms hold their warmth and feel less draughty — especially noticeable in a Canterbury winter.
Will warmer windows lower my power bill?
Less heat escaping means your heating works less hard to keep rooms comfortable, which typically shows up in running costs over time.
Which makes more difference — the frame or the glass?
Both matter. The frame stops conduction and draughts; the glazing slows heat loss through the pane. We specify them together for the best result.
Is it worth upgrading just some rooms?
Often, yes — the rooms you live in most, or the coldest ones, are a sensible place to start. We can stage the work room by room.
Get started
Tired of heating a home that leaks it?
Tell us which rooms feel coldest and we’ll come back with honest options to make them warmer — and cheaper to heat.