Does anyone know what the stuff is called that is put over the concrete in swimming pools to keep them from leaking? I’m not looking for stuff to repair a leak, but to treat the the concrete at the time of construction. Thanks.
The concrete shell is coated with some sort of plaster, tile, or a combination to form the waterproof coating. Sometimes there’s a thin bond coat under the plaster. Bond coats are generally used when new plaster is applied over older plaster but not over a new shell. Mixtures of small pebbles in plaster are also used.
I once saw a truck with the hopper and hoses used to spray building materials.
The door signage ID’d it as a Pool build/repair outfit.
The bags of “stuff” were labelled “White Concrete”. Never heard of it before and not since, but I was not hallucinating at the time (ah, fond memories…).
Generally, they are called “Plaster-Lined” pools
There are several swimming pool forums - Google “swimming pool forum” - add the “swimming” unless you enjoy billiards.
Gunnite (or Gunite) is a popular product for this use.
Yes - this is the stuff. Someone told me about it and I could not remember the name. Thanks.