They did water proofing in terrace last year. It was complete useless and waste of money. After they start the work, estimate will change and they will demand more. The amount i paid was 5 times more than initial estimate. Five year bond is useless, within 6 months it started to leak again. I called them and they came up with new estimate. Worst thing is 2nd time, he took the money and disappeared.
They are fraud, avoid them.