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gaps around windows

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oldognewtrick

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Pick up some backer rod from the hardware store, push it in the gap then use the Sikaflex to top coat it. Backer rod is a flexible foam product. You can find it where they have the insulation usually.
 

qmqmqm

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Pick up some backer rod from the hardware store, push it in the gap then use the Sikaflex to top coat it. Backer rod is a flexible foam product. You can find it where they have the insulation usually.
Thanks! Is the backer rod good for vertical gaps?
 

Jeff Handy

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If the gap is too fat for the backer rod to wedge itself tight, you can double it up and twist it like a spiral to make a big fat piece of it.
 
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