Looks like you have a pretty nasty rust problem there.
Ir rusty above ground vinyl pool.
The end result is a greasy black line about 2 inches wide around the pool liner.
Rust or corrosion for those who have aluminum pools is an above ground pool s number one enemy.
Above ground pool rust a variety of things can cause rust stains in a pool including screws nails staples hairpins or barrettes nonpool toys or rusty water pipes bringing in fill water.
Rust can be an eyesore flake into the water cause dangerous sharp or jagged edges and eventually causes the pool wall to split open.
Mineral and metal stains.
Rust stains and corrosion.
Rust on pool walls can come from water weeping through a weak gasket on vinyl liner skimmers returns lights and steps.
The most obvious problem with water leaking behind your pool liner is with the pool wall s finish.
Moisture rusts and corrodes pool walls made of steel as well as.
We get ring around the pool every time it rains.
I d go right over the seam where it joins too.
If the stain lightens from a small application of chlorine on it the stain is organic in nature.
Owners of in ground vinyl liner pools tend to focus their attention on what is most visible the enormous water barrier that covers the entire surface of the pool.
The main concern is that the corrosion developing on the wall can be sharp and can be a hazard for your liner.
While the walls in a vinyl liner pool may rust in almost all cases this level of rust is not enough to structurally compromise the wall itself.
Too much copper iron calcium or salts can all result in vinyl liner staining or marks.
I frequently have pool owners who ask me about rust.
But the people who build the structures understand that what s under the vinyl is just as important to a successful pool installation.
I ve never recommended this for a steel walled in ground pool but for above grounds i have recommended sheet metal and pop rivots over the rust and then duct taping the sheet metal to protect the new liner when it s dropped.
Our ground is greasy black clay and the fine clay particles suspend in the air when it is dry then rain into the pool.
Too much copper usually results in blue green staining while iron results in brown red or yellow staining.
First figure out what is causing the rust stain or any pool stain to avoid having to retreat the same stain over and over again.
Where does vinyl pool wall rust come from.
Finding the source of the rust the steel or ferrous material iron is important before removing the stain.