Fibreglass pump chambers - Leak repair in floor of fibreglass pump

[Mulberry Man]

I have a fairly complex drainage system including, that includes the discharge from a domestic septic tank going into a deep mounted fibre glass pump chamber. The floor of the tank is approx 3.5m below the garden level. The chamber is 1m diameter and 2m deep. Following the recent heavy rainfall, it seems as if the base of the pump chamber is in the water table and the floor is leaking, very clean water is coming into the tank. Can fibre glass pump chambers be repaired or is it a replacement job? Is there anything that can be done as a temporary patch repair whilst water is trying to flow up into the tank.
Any other ideas? ???

[lutonlagerlout]

i know some flat roofers who are using a new system where you roll on like a glass fibre/resin material,i think its guarenteed for 25 years on roofs
also centerprufe might do the job,its hard to say without looking really
cheers LLL

[flowjoe]

We have repaired tanks in the past using fibre glass patches, however we were stopping water from leaving the tank and not entering it.

The trouble with ground water is that you don`t know the pressure or force your fighting against, so in this instance you want the patch on the outside, rather than on the inner wall.

If you have to de-water (lower the ground water level) while the patch is curing it would be cheaper to put a new tank in.

If the leak is in the base of the tank a good old fashioned concrete repair may work, but this could change the levels that the pump operates at.

Let us know how you get on