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The Norfolk Broads Forum / Broads Boat Owners Q & A / Window rubbers - seal or not seal?
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Posted By Discussion Topic: Window rubbers - seal or not seal?

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Oct-20-2019 @ 3:00 PM                           Permalink
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Knows that Roys is in Hoveton
Posts: 72
Joined: Aug 2006

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Hi, I will be changing the windows (perspex) and their associated rubbers on my day boat. The rubbers are the claytonite type with the insert fitted with a tool. The question is whether to use any sealant on the rubbers on the hull side or just fit without. Has anyone any experience to share on this please? - thanks Colin

Don't Trudge it - Rudge it!

Oct-20-2019 @ 3:36 PM                           Permalink
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Mudplug Juggler
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Assuming we are talking about an existing dry fitting I suspect that the critical consideration is the state the the rim of the aperture into which the rubber is to be fitted.  If ply in good condition then a brush ground with something like Deks No1 if seal the wood and prevent water being taken up would be a good idea, If Fibreglass but pitted then a lick of gelcoat rubbed to a smooth finish is what I would do.  I would only use sealant on the join unless it is really obvious that the rubber is not going to lay flat.  You might always have to readdress the window and this would be a lot easier and less damaging if you don't have to contend with a lot a 'goo'    Cool Indifference

Bill...(The Ancient Mardler)

Oct-20-2019 @ 6:09 PM                           Permalink
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I superglued the cut ends together after allowing the Claytonite seals to settle ( usually shrink back)
I left the insert similarly overlong for a while to allow shrinkage.
Also you probably know to stagger the rubber and insert join. As far as sealant it depends on the aperture condition, l didn't ( Freeman 23) and after a settling period l have had no leaks since it was done 4-5 years ago.

Freeman F23 Flittermouse moored near

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