I have a problem for the past 2 years, which I have yet to rectify. I have water seepage problem on my wall, and according to my plumber, it is coming from my neighbour upstairs. He said there is no need to remove any tiles or do any major repair works. He assured me that he can solve the problem by simply pumping certain liquid into the wall. I hope it can solve the problem. He is asking RM450 for the repair. Is this a reasonable price to pay?

Don't know what pump. A kind of liquid that can stop the leakage. Not sure how it works etc. But he guarantees that the problem will be solved- of course his guarantee has no value.

I suspect it is not even piping. It is caused by re-tiling of neighbour's toilet floor 2 years ago.

The contractor came over the weekend. My mistake. He did not inject anything. He scrapped off the wet paint, and applied a layer of cement-like mix onto the surface. I don't know what exactly that mix is, but according to a fellow forumer here, it is cementitious waterproofing. So far so good... Fingers crossed, I hope this will solve my problem. RM350 after negotiation.