Repointing of existing flagstone front proch

by Patrick
(Glenside, PA)

I have an existing flagstone front porch and walkway. The flagstone itself is in good shape and has a good pitch to it. However, the pointing between the flagstone is cracked and missing in many places. Also, the previous owners attempted to repair it in some places, but did a messy job having not removed excess concrete on top of the flagstone.

Do you have instructions or recommendations for removing the broken and remaining pointing between the flagstones and replacing with concrete. Also, where the previous repair job left concrete on top of the flagstone, can that be ground down with a grinder or other process?

Thank you,

Patrick Wakefield

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by: David

Dear Patrick,

You will need to chisel out or rent a diamond blade saw and cut out the joints. You can check out this free video here to give you an idea:

You can then check out the following video to see how to retuck the cement into the joints.

As far as cleaning the stone, you should first try to get a strong steel brush and see if you can get the excess concrete off of the stone. Mix in some water and use some elbow grease to see how that comes.

If that doesn't work, then you might have to consider grinding it or renting a sand blaster.

Great luck!

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