Hi all, I just bought a subsale intermediate house 22x70 (roughly 10 years old), but big headache now because of water leaking problem.

1st: major leak on the side wall 2nd floor. Previous owner also experienced leak so he did waterproofing to the water tank slab 2 years ago but now there are signs of leaking as well. The water tank is open air as seen in the picture. I've asked 2 "roof water leak experts" to view before, the 1st one suggest that it's the firewall (wall between my house and neighbour's house) that is letting water in. The 2nd one suggested that the previous owner's waterproofing not done well, but never mentioned about the wall, don't know is it because he's not as professional as the 1st?


Both experts also suggested to do torch on membrane on all roof flashing, and the top part the "backbone", but the 1st one quoted to build an entire roof over the open air water tank to prevent water from going into the side wall. They will also help to replace or fix cracked roof tiles.

1st one quoted 10k just for fixing everything and building the small roof and adding membrane at V gutter. 5 years warranty.
2nd one quoted around 7-8k for doing lesser things, but even include washing and new coating. 5 years warranty.

Previous owner had contractors to seal the roof here and there with cement and both of them also very very disapprove on that.

Anyone had any experience doing full water proofing with membranes? Is the price ok?
2nd: Previous owner said 2 of the upstairs bathroom was leaking so he renovated both the bathrooms, but now ground floor below master bathroom can see water leak marks again. The 1st expert mentioned up there did a quick check and found many many many "empty" tiles in the renovated bathrooms and cracks in the part between 2 tiles. Does that mean I need to redo the entire bathroom again?



Also, most of the serious watermarks seem to be on the wall that's touching the neighbour, not like middle of the plaster ceiling. How do I know it's not the neighbour's problem?

Sorry for the long post, jjust very desperate and very miskin now 

1st picture, i suggest you do conventional waterproofing. Torchlight membrane will not last long as the product will crack and sip water in if to direct sunlight

2nd picture, sure you need to hack the toilet and apply waterproofing again.

I recently bought a subsale house which about 8 yrs old. Now the roof top is leaking and caused the ceiling koyak already. my contractor quote me 15k to hack the cement at roof top, 3 layer water proofing and put back cement and add 1 more layer water proof on surface. Is it expensive or the price reasonable?

Also the master room balcony and 1 of the bed room balcony also got leaking issue. He also recommended to redo the whole thing by remove the tiles and do water proof then install back the tiles. Both job he quoted me another 13K.

Total damage bout RM 29K jus for water proofing.

sqft of each balcony?

Hi, I am living in a Mid floor Condo, the affected area is the wall near my 2nd toilet. I am facing some issue where paint started to bubble and in certain areas Mold started to grow, at first i thought it was a water leakage, but when I look at the water bills it seems fine( RM 12- 15) per month. When I touch the walls, it seems very powdery even the steel door frame started to rust a bit from below. FYI There is no pipes in the Left wall.

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Hi all, my outdoor wall lamps are frequently spoiling despite them being so-called 'waterproof' and has this rubber band inside - seems like the rain water is somehow sipping in - what i can do to prevent this?

A picture would have been helpful?! 

Based on my previous experience( at relatives home), either a silicon or a transparent tape had been helpful, again depending on the lamp type. Else consider getting a newer one

Hi,

On top of the master bedroom toilet of my house is a small RC slab (around 80 sqft), as per the google map screenshot below.

Currently suspected water leaking from here until the GF wall between my house and the neightbour. As the bathroom is fully tiled up, suspected the water leaks behind the wall tiles from the roof down to the GF wall.

Got 1 contractor recommending painting with Sika waterproofing (1k), but I think this will not last long?

Another contractor recommended torch-on membrane (2.7k). From the posts in this thread, sounds like this is also not a good solution as it's directly exposed to sunlight, might be able to last only a few years. Is it correct?

May I know if there's any other better solution? Or the torch-on membrane is ok for this situation?

Thanks