Expansion joint between deck and coping?

what kinda decking cause it can go 2 ways. If it poured concrete coping and then to concrete decking would say a deff yes, but if it was pavers on concrete pour you could get away with it for pour to unite wall and then do none for the paver coping/ stone coping to paver sidewalks. even if you go paver coping to pavers on sand gravel base you can get away without a zip strip.

but i would do what your PB wants cause he holds the warranty cards.

i'm on a poured concrete scratch coat with paver coping and paver sidewalks. i didn't do one. i think it yucks up the look of paver to paver border. i did do expansion joints between my scratch coat and unite shell. i also then chalked the line between the coping and unite shell concrete pour to water tighten it up, but you don't see it.
 
i would then. concrete needs expansion. especially since it's cool deck.

try to find a plastic or similar material one so you don't have SL (self leveling) chalk pouring in the small voids of the coping. it will stick out more. SL really only works and looks ok if you have a very very straight run with not a lot of mortar joints coming out in all diff directions. and they need to be dead even with the end of the coping so you have nice clean lines. the cleaner the lines that will bump up against the decking will be the better for it not to stick out. I really would stay away from SL stuff if you could though. I would use a zipstrip of some type.

that's just me. my builder wanted me to use one but my buddy and myself veto'ed it cause of being all pavers. it would stick out like a sore thumb.

just my opinion though. i would use one though if i had concrete decking though.

jim
 
Was the pool complete? I would expect the joint to be filled with a travertine coping and kool deck. Weeds, snakes, crud, will become a problem IMHO. It will end up with something but likely not what you want.
 
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