ning
Elite Member
This isn't really a "rural living" thing, but in lieu of finding some other forum site, I figured I'd ask the DIY geniuses here first!
There's an in-ground pool at our house that hasn't been used in a long time (like, more than 15 years), and there was some pretty disgusting water (with a floating plastic cover) in it until very recently. My son wants to use the pool, and I was sick of knowing there was a swamp monster evolving there, so we used a pump to empty it (the pool is actually slightly above original ground grade and the ground here is very dry right now so there's literally no concern about it floating/cracking due to it being empty for a while) and pressure-washed the inside.
Now, the walls have some pretty significant calcium scale deposition. I'm considering ways to remove it; not only is it ugly, but it's an abrasion hazard for skin. The pressure washer (supposedly a 3000psi unit) with a turbo nozzle very gradually was able to flake some of the worst of the scale off without any sign of damage to the gunite, but it was going to take forever at that rate (I'm not talking "all day" I'm talking spend the entire month straight or more forever, like, no).
What to do?
The first ideas were to hire it out, which would be
1: Acid-wash the pool. We've called around, and nobody seems interested. They seem busy enough taking care of pools that just need the basics. I'm still hopeful we'll find someone else to do the job as I have plenty of other projects to work on and I don't like the idea of acid washing this myself.
2: Bead-blasting. We got one callback on this, and they want an arm and a leg just to do the tile line, which is the smallest part of the job. I've watched a youtube of someone doing this themselves and I'd prefer to do the tile myself than to pay what this guy wanted - but he wouldn't even quote the rest of the pool.
So it seems likely I'll end up doing this job myself (well, me and my son).
At this point we're considering using a drill-mounted abrasive like this to knock as much of the scale off hopefully quickly and easily, and then follow up finer abrasives, and though I said I don't want to acid wash, possibly finish with some muriatic acid - once the whole pool is smooth from abrasive work, presumably it won't take too much acid work and I can probably be convinced to get the final 0.1mm of scale off that way - unless it looks & feels fine without the acid in which case I'll just call it then.
Thoughts?
There's an in-ground pool at our house that hasn't been used in a long time (like, more than 15 years), and there was some pretty disgusting water (with a floating plastic cover) in it until very recently. My son wants to use the pool, and I was sick of knowing there was a swamp monster evolving there, so we used a pump to empty it (the pool is actually slightly above original ground grade and the ground here is very dry right now so there's literally no concern about it floating/cracking due to it being empty for a while) and pressure-washed the inside.
Now, the walls have some pretty significant calcium scale deposition. I'm considering ways to remove it; not only is it ugly, but it's an abrasion hazard for skin. The pressure washer (supposedly a 3000psi unit) with a turbo nozzle very gradually was able to flake some of the worst of the scale off without any sign of damage to the gunite, but it was going to take forever at that rate (I'm not talking "all day" I'm talking spend the entire month straight or more forever, like, no).
What to do?
The first ideas were to hire it out, which would be
1: Acid-wash the pool. We've called around, and nobody seems interested. They seem busy enough taking care of pools that just need the basics. I'm still hopeful we'll find someone else to do the job as I have plenty of other projects to work on and I don't like the idea of acid washing this myself.
2: Bead-blasting. We got one callback on this, and they want an arm and a leg just to do the tile line, which is the smallest part of the job. I've watched a youtube of someone doing this themselves and I'd prefer to do the tile myself than to pay what this guy wanted - but he wouldn't even quote the rest of the pool.
So it seems likely I'll end up doing this job myself (well, me and my son).
At this point we're considering using a drill-mounted abrasive like this to knock as much of the scale off hopefully quickly and easily, and then follow up finer abrasives, and though I said I don't want to acid wash, possibly finish with some muriatic acid - once the whole pool is smooth from abrasive work, presumably it won't take too much acid work and I can probably be convinced to get the final 0.1mm of scale off that way - unless it looks & feels fine without the acid in which case I'll just call it then.
Thoughts?