I am building an extention and have been told that my new windows need to be set back into the cavity and secured by straps into the inner leaf of brickwork. This is to prevent cold bridging. What kind of straps do I need and how would they be fitted without being on view?
fitting window
- Thread starter kevinmachell
- Start date
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http://www.double-glazing-parts-repairs.co.uk/schuring-window-fixing-clip
Upvc?
They clip onto the frame and are behind the finishing on the reveals.
Upvc?
They clip onto the frame and are behind the finishing on the reveals.
Thank you. does this also apply to door frames or do they need more substantial securing?
You have been misinformed about the set-back. You don't set frames back into the cavity
The frame is normally fixed to the outer skin, but so that the the back edge of the frame covers the joint of the vDPC, or between the back edge of the outer leaf and the cavity reveal liner if you are using them
You can use the fixing clips if you like, but the frame position is the important bit.
Set them too far back and the cills wont work
Likewise for door frames
The frame is normally fixed to the outer skin, but so that the the back edge of the frame covers the joint of the vDPC, or between the back edge of the outer leaf and the cavity reveal liner if you are using them
You can use the fixing clips if you like, but the frame position is the important bit.
Set them too far back and the cills wont work
Likewise for door frames
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The frames are installed butted against the inside of the external leaf in Scotland, The external skin is constructed approx 10mm smaller than the inside to form a rebate.
Maybe the architect is a Scotsman
No fensa up here either.
Maybe the architect is a Scotsman
No fensa up here either.
There are fixing systems that allow the window to be positioned over the cavity, but these are pre-prescribed methods that require installation of a recipient cavity closing 'frame' which is built in by the builder. The window is then fitted into this frame later on.
Standard fix is as Woodpulp describes. It is prudent to allow the window to sit back over the cavity slightly so that here is zero contact with the outer masonry when it comes time for plastering the reveals.
Standard fix is as Woodpulp describes. It is prudent to allow the window to sit back over the cavity slightly so that here is zero contact with the outer masonry when it comes time for plastering the reveals.
Many thanks everyone your answers were most helpful. With regard to cavity closing using vertical DPC and brick I thought that all cavity closing needed to be done using propriety closings containing an inbuilt amount of insulation and that the building regs demanded it. I have learned a lot from you all on this subject.
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