Pool has this retaining wall and this is the only section that the concrete is directly against it. It’s short here about 1 foot high. This year I noticed a slight gap between concrete surface and wall so I’m thinking of sealing it. I tried polymeric sand in first section but it goes straight down because I guess it’s not “sealed” down below. I’m thinking of using that self leveling sealer for driveways or concrete but wondering if ground has to be sealed below it somehow.
Patio sealer
- Thread starter mrm1682
- Start date
- Nov 12, 2017
- 12,638
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Don't use sand. It doesn't flex. You need to use a backer rod, first, to "plug up" the crack, and then use a self-leveling sealer. The backer rods come in many diameters, so you would have to find one that fits that space, but fits snugly. You cram it down to the depth recommended by the sealer, then lay in the sealer on top, with a caulk gun.
Like this:
And this:
You can sprinkle sand on top of the sealant to disguise it as grout.
And there are many other solutions, too, for an expansion joint. I just know the above works, and is easy to install DIY.
Like this:
https://www.lowes.com/pd/M-D-20-ft-x-3-8-in-Gray-Backer-Rod-Polyethylene-Window-Weatherstrip/1085965
And this:
You can sprinkle sand on top of the sealant to disguise it as grout.
And there are many other solutions, too, for an expansion joint. I just know the above works, and is easy to install DIY.
Last edited:
- Nov 12, 2017
- 12,638
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Thanks! Was actually thinking of that but saw it mostly around driveway and sidewalks. This is merely to seal between concrete patio and retaining wall which are same height. Seems like it’ll work and the sprinkling idea would hide it.
- Nov 12, 2017
- 12,638
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
I described an expansion joint installation, but that doesn't mean the same technique can't be used in a space that doesn't need to expand and contract.
I just finished my expansion joint this year, and now I'm thinking of doing more with the leftover sealant, filling in the crack-relieve lines all over the concrete in my yard. They just fill up with dirt and leaves, and I'm tired of cleaning them out. So maybe I'll fill them in, and sand them over, and that'll be that. They'll just look like grout lines between large slabs of concrete.
I just finished my expansion joint this year, and now I'm thinking of doing more with the leftover sealant, filling in the crack-relieve lines all over the concrete in my yard. They just fill up with dirt and leaves, and I'm tired of cleaning them out. So maybe I'll fill them in, and sand them over, and that'll be that. They'll just look like grout lines between large slabs of concrete.