Flat elevation
Sash and frame sit level in one plane, with no step or shadow line, the giveaway of standard uPVC.
uPVC flush casement windows
uPVC flush casement windows with the sash level with the frame, for a flat period look, fitted across London by our own team.
01uPVC windows
What is a flush casement window?
A uPVC flush casement window has an opening sash that closes level with the outer frame, the way timber casements were built. It suits period houses and terraces where a standard casement looks out of place.
Concealed corners
Corner joints imitate a mortice and tenon, so there is no diagonal weld line and the corner looks like joinery.
Foil in the rebate
Woodgrain foil runs into the rebate, so an open sash still looks like painted timber, with no white plastic showing.
02Technical specification
Specification.
Every option is confirmed at survey, against your opening and your build stage.
- Style
- Sash flush with the outer frame
- Opening
- Outward, as a casement
- Finishes
- White, Anthracite Grey, matt woodgrain foils
- Ventilation
- Trickle vents, concealed option
- Fitting
- Supplied and fitted by our own installation team
- Lead time
- Made to order; confirmed with your quote
03Asked before every survey
The questions that matter.
Will anyone be able to tell it is not timber?
From the pavement, rarely. The flush sash, the concealed corner joint and matt woodgrain foil that runs into the rebate remove the usual signs of plastic. Up close you can still tell by touch. If the building calls for genuine timber, we supply that too.
Is uPVC allowed in a conservation area?
Sometimes, and the council decides. On the front of a period house, or where an Article 4 direction removes permitted development, timber is often required. Some heritage flush ranges are now accepted in places, but not as a rule. Ask your planning department first.
Does a flush window leak more than a standard casement?
Only if badly fitted. A flush sash has no external lip over the seal, so the frame must be set true and the cill must carry water away from the wall. That is why our own team fits what we supply.
Can I have a flush casement in a dark colour?
Yes: Anthracite Grey and woodgrain foils are available. Dark frames get hot in the sun, so profile quality matters more than colour. A good system has thick reinforcement and a foil that reflects infrared; ask for it by name when you compare quotes.
04Start here
Start with a conversation.
- A render of the finished result before you commit
- Showroom in Ruislip, opposite Ruislip Manor station, with parking
- One team from survey through to installation
Prefer to talk?+44 20 3375 8609Not ready for prices? Send us a message instead