Hi. What's the best way to repair the expansion joints in a concrete
driveway, where the fiber board has deteriorated ? I was thinking of using
backer rods and regular or roofing caulk in a tube.
Is the black roofing caulk any better than the stuff in the concrete section
of the store ?
Is sand an alternative to the backer rods ? I have about 10 joints to fill,
and sand would be a lot cheaper.
I thought about using the expanding insulating foam. It says it is for
interior & exterior use, but I wonder how it would hold up in a driveway
Thanks for the input.