Upvc window - fitting expanding foam tape

18 Nov 2017
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United Kingdom

I have some WHS halo windows where the outside of the frame has a profile for fixing cleats or frame extenders to. So the outside of the frame looks like:

outside of frame.png

My question is say I want to fit expanding foam tape (Compriband TP600 or similar) around the perimeter of the window frame instead of using silicone sealant. Where should I stick the expanding foam tape to the frame?

I was thinking of doctoring some frame extenders (see below) so I could clip them into/on the side of the frame which would give me a flat edge to stick the foam tape to. But is there a better way of fitting tape to similar frames?
frame extender.png

chopped down to:

frame extender cut.png

Any advice appreciated.
Last edited:
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