Hot answers tagged adhesive
You typically want pavers sitting on top of a sand and compacted rock base. This allows for some movement as needed and some drainage if needed. If you are in a freeze/thaw climate, adhering the pavers to the sidewalk likely wouldn't work very well as water will eventually get under the pavers and start cracking everything a it freezes. Ideally, you're ...
I have never tried to adhere pavers to a sidewalk, but can't say I wouldn't recommend it. Instead I would install paver edging along the edges of the sidewalk and set the pavers in between them. Then I would fill in between the pavers in with polymeric sand to lock them in. Paver edging:
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