From my experience as an inground cement pool owner for 7 years. Drain it and have it sandblasted and repaint with a quality marine/pool paint. I would not recommend the paint sold at your local pool supply store. My pool is 20 x 40 and hold 40,000 gallons of water. The paint I use is from a local company that really doesn't sell to the general public. It costs me around $500 for the paint. I can paint the pool myself. The sandblasting should be done by a professional and should cost anywhere between $1,000 and $1,500. Other than that, I know of no other solution to remove paint chipping from the bottom. I had the same problem and it was causing my water to get very cloudy. I know a lot more about the paint part if you need more info and want to email me.
Concrete, as well as many epoxy mixes will harden underwater. Someone needs to be IN the water to properly apply the patch material.
No. An older (possibly better) type of Fiberglass pool was constructed in this manner, with a concrete/Gunnite/Marcite trowled bottom and Fiberglass panels at the side of the pool. Panels are caulked together along vertical joints. Actually not a bad deal, but caulked joints must be maintained. Once the concrete starts showing through at the bottom of the pool, its time to drain and resurface. Bottom of pool should be acid washed every 3-5 years to keep it sparkling and remove mold, mildew, stains. If bottom surface is chipping off, its getting close to time to resurface bottom of pool. Bottom is treated just like any concrete/gunite/Marcite pool surface. Sides are simply brushed, caulked in timely manner.
Just cover the bottom of the pool to keep it cool this will prevent the cement cracking
when I was finishing concrete, we would use a combination of epoxy glue and decrotive pea gravel. mix the 2 and place on the cement, trowel down smooth and let dry. use marine epoxy or any that is water proof. when dry you can wash it with a hose to get rid of the dirt
Sounds like mustard algae. Usually happens after a lot of rain or warm weather.
I had an inground pool installed. We just turned on the lights at night and noticed footprints on the bottom. Can this be fixed? Call the pool company back. The bottom is normally sand mixed with cement. The liner will probably have to be removed and bottom smoothed. They should have checked that before installing the liner. Those printswi catch sediment and debris for the life of the liner.
chlorine
There are two parts to a vinyl liner pool: the bottom and the walls. The walls are the first 3 1/2' down from the top, all the way around the pool. There are many different types of walls including galvanized steel, aluminum, fiberglass, polymer and concrete. The bottom, everything below the first 3 1/2' down, can be made from cement, a cement/vermiculite mix, a sand/vermiculite mix, a cement/sand/vermiculite mix, or just plain sand. What is used under the pool liner depends upon the preference of the pool builder and the specifications of the homeowner or contractor.
Resurfacing is applying (troweling) a new coat on top of a eroding pool bottom. The best material to use is pool base (vermiculite and portland cement). It can be applied from 1/4" thickness and can be tapered to smooth edge.
Hydralic cement?
Swimming pools can have many types of bottoms. Most are cement or dirt. So if its cement and bumpy its probably wearing and the same if its dirt. When the pool was put in on top of the dirt is sand usually so the sand has shifted. The water stays in because most pools have liners.
if it is above the water line just make up a strong sand cement mix with a concrete bond in it and apply it to the chipped area. If it is under water you may have success with an underwater epoxy putty.