Most of the time the leak is above the frost line so the warmer your climate the deeper the crack could be.
Vinyl pool main drain leak.
The pool s main drain can crack and require repairing which can cause serious leaks.
During winter months or periods of non use most pool drains do not need to be plugged but in some cases plugging a main drain is required or recommended.
Look for sinkholes where sand under the liner may have washed away.
If there is a leak in the line in the section above the bottom of the pool the amount of pressure loss can be used to indicate where in the line that leak is.
There may be a grid of rebar under the pool plaster which you will need to cut with bolt cutters.
When the pool and the pool return pipes settle in the ground at different rates this almost always results in a leak where the return meets the pool wall.
This leak will probably be under the main drain well or within 2 feet of the main drain where it makes its turn towards the trench.
If the depth of the main drain you re testing is different than 9 the pressure the water puts on the air lock can be calculated at 43 psi per foot of water.
An inground swimming pool s main drain is located in the deep end of the pool.
Skimmer returns cleaner line steps pool lights main drain etc.
This type of leak is a very common leak location.
If so there are special considerations.
The main drain is one of the hardest complicating factors for finding leaks in pools.
Some adjustment to circulation or filtration is usually needed to make up for the missing main drain.
Break out the leaking area with the jackhammer.
Look for tears or separations around all fittings.
A main drain circulates the pool s water by pulling water off the bottom of the pool and sending it to the filter.
We have here a comprehensive guide for finding a leak in an above ground pool with a vinyl liner and how it can be repaired.
In addition to the individual items such as the skimmer returns lights and main drains already discussed leaks through the physical structure of the pool itself are very common.
Most common pool leaks one thing any pool installer would tell you is that fixing the leaky sections of a vinyl pool liner is a whole lot easier than finding where exactly the hole is located.
This repair will likely cost between 400 and 700 unless the entire drain needs to be replaced.
Leaks in main drains are hard to fix and for this reason leaking main drains are commonly abandoned.
Structural leaks vinyl liner pools structure leaks are very common in swimming pools.
