I was quoted by a supplier to install a single membrane layer + 2 layers of waterproof sealant for my rooftop..

RM7500 including cleaning and 5 years warranty. About 105sqm area. How's the price?

It's not an empty rooftop, there's the solar heater, water tank, pumps, and all sorts of angle bars to support a tedious piping networks.

Hi guys do you know of any contractor/plumber that does inspection for condo in KL area? My floor has magical water seeping upwards in the kitchen area.

This is strange bcuz it's not from the ceiling, which is the usual problem. Another thing is it's on and off and not continuous so it's hard to pinpoint where it's coming from.
There are 5-6 spots where the seepage is, sometimes it all comes at once, sometimes only one spot. Water bill is still consistent so maybe minor leak for now. Could it be outlet pipes? I've no clue and reached a dead end.

I've tried contacting plumbers around and they're reluctant to do such work bcuz it requires a lot of hacking. Is there no device or technique to detect the seepage/leak from within the wall?

Have you try asking the management for advise ? Ask them if they have the plans or drawings for the entire condo.

This is also an 'opportunity' to change the entire kitchen floor tiles.

Yes I have. The thing is that in my aunt's condo the management would solve such an issue but unfortunately mine won't take the responsibility. Just need a recommendation here... Mould has start to spread...

You can try to approach any Indon worker. He is more likely to do the job compare to locals. Try to approach the condo maintenance guys also. They will have contacts

From experienced, those locals prefer good money and easy work.

Hi sifu, I recently completed the torch membrane waterproof 3 days ago. Today raining and a little bit of leaking from the roof slab. The contractor informed me that due to the pressure of the rains as the concrete slab is not totally dry yet. Is it true?

There's now water leak in my porch ceiling per pic below. Definitely the water is sipping fro the drainage fro upper roofing per pic. What product and diy method can I water proof it?

The drainage was water proofed few years ago at $600 though. Aircond water piping does not drip into the drainage instead via another piping into proper hole on the roof

Previously contractor suggested changing the whole drainage which costs $1200😡

Hey Shifus,

Recently I've spent a huge sum of money to replace all the old cement roof tiles of mine to new Monier ones, to mitigate small leaks and to prepare for a planned new ceiling (17k MYR).

The contractor in charge did such a sh**ty job that now a few of my rooms are practically raining when heavy rain is in occurrence. My ceilings are all completely drenched. I have since ended my relationship with the prior contractor (Paid only 8k and ended contract) and are now consulting a new one which recommends either aluminium foil or zinc sheet to be installed under the current roof tiles.

Should I agree with this ? Please advice me as i want to prepare to redo my ceiling ASAP.

Home is 1.5k sqft.

Aluminium sheet installation quote = 1.7k
Zinc sheet installation quote = 2.5k

any recommendation for torch membrane specialist?

My carporch concrete roof top is having small cracks and the normal waterproofing paint is not really workable although many layers were painted.
i googled and many placed as ads.

size is about 20'x20'

Cheras area.

1. PU injection chemical (no hacking) 

Advantage 
Fast job,
no hacking concrete,
filling up the concrete crack structure (inside the concrete)
effective and the most used at site construction repair.

Disadvantage
messy and dirty,
there is chance the water leaking find new exit point,
home owner require to patch up the new plaster ceiling.

2. Epoxy grout between the tiles joint (no hacking) 

Advantage 
Fast job,
no hacking concrete,
filling up the minor crack joint between the tiles joint surface (top surface)

Disadvantage
It did not solve the big crack inside the concrete.
If big crack exist inside concrete, the leaking will come back because epoxy grout mostly treated the top surface part.
The additional movement & vibration concrete, the epoxy grout will wear and tear out.
Many public unaware contractors using tiles joint filler or cement grout filler instead of epoxy grout filler.

3. Epoxy flake coating (no hacking) 

advantage 
no hacking concrete
instantly cover your dirty floor tiles
Create many design patterns

Disadvantage 
Cover up existing beautiful tiles,
time consuming as it takes 2 – 3 days to fully cured
it did not solve concrete structure crack (inside the concrete)
4. Water repellent chemical between the tiles joint (no hacking) 
Advantage 
Fast job
no hacking
easily DIY yourself
economical

Disadvantage 
The leaking coming back soon, the water repellent wont last long.

5. Hacking and redo everything new. New waterproofing, new screeding, new tiles. 

advantage 

The  one time solution that solve everything.
Water leaking solved
concrete structure strengthens

Disadvantage 
time consuming and may take up many days to complete
expensive
messy and noisy
The concrete structure is just like the center of human body. If the center of human body is not healed and let it slowly deteriorated (concrete structure crack). The whole thing will crumble soon and major fix repair is require. 

This is regarding a new house.

The bathrooms have a shower area that has slightly lower floor area and come with shower screen. The floor of non shower area (toilet bowl and sink) is slightly higher.

I pond test the entire bathrooms (two bathrooms with same design 8-3' x 6-3'). The shower area doesn't leak below. The non-shower area leaks below (I come back after 24 hours).

Is this normal? Or is this consider a defect that need to be rectified by developer? I need to ask because as expected, my developer argue that no body flood the non shower area in normal use and I have also void the warranty.

Thanks in advance!