I have some pavers that were put over the concrete when we redid the
pool a couple years ago that have come loose. Does anyone happen to know
what temp the concrete and/or ambient temp needs to be before for the
:glue" will hold?
Statistics are like bikinis. What they reveal is suggestive,
but what they conceal is vital.
If they were done properly the "glue" is a concrete product - probably an
acrylic modified thinset mortar . It just needs to be above freezing for
concrete to set . Dig the old stuff out enough that you have a "bed" of
mortar a half inch or more thick to reset the paver(s) into so you can level
it with the rest .
The manufacturer of the adhesive should list the recommended temp. range
right on the package. If not , check their on-line spec sheet.
Just for an example, Loctite epoxy recommends to use between 39 and 95 F
I would check what was used before. I have set a lot of brick pavers on
concrete. The adhesive I have always used was plastic roof cement, as
close to the old cutback adhesive as possible. I've never had any come
loose. Once set, brush in/on fine samd to fill any voids.
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