Pouring a concrete slab for a hot tub
by Rick
(Grand Haven, MI USA)
Q. I am pouring a 12x13foot slab for my hottub under my deck. I have scheduled a concrete pump trailer and 2 friends to help. I will be pouring in contact with my exterior foundation of my home. what should I use for a expansion joint against the foundation? and second how do I screed with no form boards on two of the four sides of my slab, as those my slab will be in a corner of my foundation? Love your site. Thank you. Rick
A. You can use a product called Iso-strip. I have a page about this material here.
We wet screed the concrete when we don't have a form to screed from. This takes practice in order to get the concrete level without digging in or creating a hump. You could nail a pressure treated 2x4 onto the foundation and use this to screed from and as an isolation joint.
Hi, I am Mike Day, owner of Day’s Concrete Floors, Inc. in Maine. I've been working with concrete for 40 years now, and this website is where I can share with you all the knowledge, wisdom and expertise I've gained from installing all kinds of stamped concrete, concrete floors, concrete overlays, concrete slabs and also repairing & fixing cracked or spalled concrete.
There’s a lot to cover, so if you have any questions, contact me!
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