Re-Caulking A Concrete Pool..Using TSP & Acid Wash..by Anthony
I want to recaulk under the lip of my in-ground concrete pool. The old caulk has mold in it. I plan to TSP Acid wash and TSP again. Will this take care of the problem so my new caulk job will look good. Thanks for the question Anthony The first step is to clean the surface with TSP (trisodium phosphate). A gallon of TSP used for pools will cover an area about 200 square feet. Be sure to get all the mold and/or algae off before you start any caulking or repairs. Try to strip as much old caulking off the edges and seams as you can. The new caulking needs a clean seat to dry and cure. I've used TSP a few times on pools in Arizona. Acid washing all or part of a pool is never fun, but sometimes it's needed. When using muriatic acid, be sure to always wear goggles, protective clothes, and long rubber gloves. Muriatic acid is corrosive very caustic. Muriatic Acid Remember when you do the repairs to use just enough to do the job right. I've had to re-plumb other people's mistakes and it takes twice as long to do the job a 2nd time. I guess they thought that if you can screw something down and tight is good, then really really really tight is even better. Not true. Hope this helps and good luck with your project Robert |
