Quote:
Originally Posted by Slipknot
you could try spray foaming the sills but water will find it's way in the path of least resistance so might be futile since you say it's problematic to get to the area from outside.
I hope you have a pump in case
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I need to insulate the sills regardless. Old house and they leak cold air badly. Not sure the best way to go about this. Access from the cellar is good though.