Concrete in vinyl pool too hard

[aylad]

I will be replacing my liner this winter, as well--I live up near Shreveport, LA. Interesting about the discounted work before Mardi Gras--that's one question I need to be asking! As far as the concrete goes, I would think that the only factor in the concrete might be the number of rocks that is used in the mix, and perhaps they are creating the holes when under the pressure of the water? Does a softer concrete mix use less ( or smaller) rocks? If not, I would think that concrete is concrete is concrete.

My pool stays under a pretty high chlorine concentration most of the time, due to the high CYA levels that I keep because of my location,and I shock my pool pretty frequently. I have not had any deterioration problems so far that I'm aware of, and this is my pool's 8th year (I keep it open year round).

Hope this helps!

Janet

[waste]

Hi there, sorry your having persistent liner problems

Many liner pools have sand and cement bottoms and don't experience the rapid degradation that you describe. However, the Kreepy may be responsible, is there a way that you can make it's suction less aggressive while still allowing it to clean the pool? (Like leaving another suction port slightly open - I have very little experience with Kreepys so can't remember if there is a relief port for them)

Vermiculite and cement is a softer mix for the liner, but I doubt it's something you'd want to try to apply yourself as a 'skimcoat' If the floor is uneven or has sharp ridges or protrusions, you'd certainly want to address those areas!

You shouldn't have any trouble with a liner drop where you are (I installed a liner today with the air temp ~53* and little sun - it was 'tight as a bowstring', but went in fine ) Temps over 60* and full sun help a lot, but they can be done even when conditions aren't optimal.