Sealing cat flap gap in wood panelled door

25 Nov 2006
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United Kingdom
Hi. I'm fitting a cat flap for a friend in their wood panelled door. I haven't seen the door yet but they've sent me a photo with measurements and I've downloaded the cat flap dimensions. The cut-out area falls within the panel section but the flap's outer frame will bridge the panel between the mullion and stile. That means there will be gap between the plastic frame and panel and from the photo it looks to be quite deep. Am not sure it will be easy to seal - any ideas?

Would using silicone sealant on the bare wood of the cut out area be sufficient or should I find a way to seal the panel gap? Thanks
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