Leaking spa spillway, need waterproof sanded grout?

bbohica

Member
Oct 11, 2018
11
austin tx
The images sort of say it all. I bought this house last year and the spa spillway leaks and runs down throughout the stone and grout. In addition to the grout on top of the spillway stone being bad, it also leaks around the sides and possibly bottom of the spillway stone when the spa is off. You can see water trickling down the outside of the spa, and the water in the spa drops to the bottom of the spillway stone.

What readily available products are available for me to repair this myself? I patched the spillway up with silicon awhile back but it just grew algae underneath and I had to remove it. I looked for Laticrete grout locally, but can't find it anywhere that will sell it to the public.

Appreciate any help!
 

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bdavis466

TFP Expert
Platinum Supporter
Aug 4, 2014
5,294
San Clemente, CA
It looks like type S mortar was used as that is very common in that type of construction. The problem though is that it does not hold up well to water and erodes away with time.

Your best bet would be to remove all of that grout and replace with something that's designed to withstand water
 

bbohica

Member
Oct 11, 2018
11
austin tx
Not a salt water pool. Using liquid chlorine per TFP advice, but who knows what was done prior.

Yes, I want to chip out all the old grout and replace it, we're on the same page here for sure. My question is, what product to use, or is there an additive to mix in with some big box store sanded grout?