Hot Tub Forum
Original => Hot Tub Forum => Topic started by: cranbiz on March 02, 2021, 08:53:25 am
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So I have been busily preparing for my new tub. It's going on an enclosed porch that formally was open. It has a decent pitch to it, like 2 1/4" over 13' which I figured is too much out of level for the tub. From research, I understand that flat is more important than level.
The area I'm putting the tub on has been pretty much leveled using concrete and self leveling cement (within a quarter to half a bubble on either axis). The patio itself that I leveled, is 4" of concrete and a finish layer of tera cotta tile in a mosaic pattern, so plenty of weight bearing capacity.
Anyways, my base layer of quickcrete had some high spots that the self leveling concrete didn't cover. In total, I have one spot, about 3" in diameter that has aggregate sticking up about a 1/4 of an inch and several very small spots about the same height (like 2 or 3 stones).
The tub will have an ABS base and the worse high spot is not on the edge.
Is this good enough or do I need to break out the grinder to fix the high spots?
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I would grind it flat personally. I wouldn't risk a pressure point on the bottom of the spa. If you put a diamond wheel on a hand grinder it will be gone in not time.