Mech-Mate Pitliner
The Mech-Mate Pitliners are available in a wide range of sizes to suit not only the size of your brick pit, but also the depth of water or damp ingress, i.e if your pit has just a fewinches of water in the bottom ( in its worst condition ) you do not necessarily need a "full depth" Pitliner, up to the garage floor. A Pitliner can be supplied to line your pit to an appropriate level above the water / damp ingress.
Contact Mech-Mate to discuss Mech-Mate Pitliners in more detail and to discuss pricing.