Our pool was built ~3yrs ago and the builders comprehensive warranty for any issues is about to run out. Over the last six months we noticed a rust stain developing on a deep end wall nearest to a backyard hill. We've worried for awhile that there might be a water seepage issue with this wall, as after construction it took well over a year for the tile grout to completely dry and the grout had to be applied 3 times. There was also a leak in the deep end plaster that required significant patching.
We had the pool builder come out to look at the stain and they confirmed that it was a rust stain extending all the way from the initial foundation rebar. They are hoping that it is a just a small issue. But, I'm worried that we may just be seeing the tip of the iceberg with regard to water near the hill wall causing more stains in the future. I've asked the pool builder to inspect the status of rebar when they open up the wall to fix and replaster that section.
Unfortunately, the pool builder states that they need to completely drain the pool in order to patch the stain. We do have a hydrostatic valve in the pool, but it has never been tested to my knowledge and I'm wondering what the risk of the pool popping up is...The builder has stated they will not be responsible if the pool pops up during work. That doesn't make sense to me as they are the original builder and are fixing an original construction defect.
The pool is 34'x16' and takes up most of the space in the backyard. The builder provided only 2ft of clearance from the retaining hill wall. Standard code in our area is 3ft but they said that was not necessary...was this a big mistake?
What would you all advise? Any suggests are much appreciated.