Continue from https://forum.lowyat.net/topic/4374789/all

Hi guys, you ask me anything of Water leaking / Waterproofing. The more complicated the question is, the better

Waterproofing is not an easy topic. Sometime the leaking situation is very tricky and complicated. Sometimes its very straightforward.

Just ask me anything and i will try my best to answer when i have time. And i like to learn from others too.

The more challenge the water leaking waterproofing situation is, the more adrenaline i get smile.gif Especially those who appointed few contractors to solve waterproofing water leaking problems and yet still failed to rectify the water leaking waterproofing.


Those common water leaking i can share about are below:
1. Waterproofing Problem / Waterproofing Materials
2. Water leaking / Plumbing (toilet, roof slab, wall concrete slab)
3. Concrete crack repair solution.

In general, There are few types of waterproofing chemical
1. Liquid applied PU waterproofing membrane
2. Cementitious waterproofing coating
3. Chemical PU injection waterproofing system
4. Exposed waterproofing system
5. Self adhesive waterproofing system

Nowdays there are a few improvement in waterproofing technology such as
Crystallization effect, epoxy coating, Silicone waterproofing, water repellent coating etc.


I believe Water leaking or Waterproofing problem is the most nightmare defects rectification work compare other defects. Worse still some contractors proposed wrong method solving the leaking matter or some contractor disappear after owner engage their service and many nightmare stories that i heard.

I will be very glad to share some of my experiences rectifying water leaking problems or waterproofing problems and share my knowledge the best solution to rectify it smile.gif

First of all, apologize for my English and please focus on my knowledge sharing here smile.gif





Share me what is your water leaking & waterproofing problem here. Learn together and lets solve it.

This post has been edited by Daang: Jun 1 2020, 06:41 PM

Reserve for typical waterproofing problem to discuss =)

This post has been edited by Daang: Jun 1 2020, 06:40 PM

reserve for typical technical drawing waterproofing =)

This post has been edited by Daang: Jun 1 2020, 06:40 PM

reserve

Nightmare to deal with... 🙏🏻

How much do you charge for a typical toilet waterproof work.

Retiling, can the old tiles be salvaged?

This post has been edited by Zwean: Jun 2 2020, 01:25 AM

hi Daang, thanks for taking over.

to everyone, i was the owner of the last thread on water-proofing. water proofing is a kind of problem that you don't know or even think about when it didn't happen. life goes on, business as usual. but when it did occur, it really can caused u to feel extremely frustrating and sleepless night. think of it like the feeling of shitting, if the feeling didn't come, u wont think about it. when it did come and especially at a time u least expected it, it become a situation.

since i have abit knowledge about it, i opened that thread as an 'educational' and part 'personal-hobby-project' ...

but i have since left Malaysia to cari makan down south. this hobby/project thread has proofed to be overwhelmed and i can't handle the many queries since i am no longer based here. with heavy heart i have to close that thread. i also received many pm's and felt sorry i was unable to offer much support.

one day TS (Daang) and i talked and suddenly this topic on the water leaking thread that i did few years back came about in our discussion. i am happy that Daang is willing to re-start this meaningful and useful thread.

Daang and i have known each other for more than a decade. he knows his stuff in water-proofing and generous enough to re-start this thread.... i encourage everyone that have any problem in this area, feel free to discuss in this thread so everyone can share and hopefully solve this toxic problem if it ever happen to your home/facilities.

GO GO GO Daang.... thank you for continuing and taking on this topic......

[quote=moonhowler,Jun 2 2020, 04:49 PM]
hi Daang, thanks for taking over.

It is an honor!


[quote=Zwean,Jun 2 2020, 01:25 AM]How much do you charge for a typical toilet waterproof work.

Retiling, can the old tiles be salvaged?

[/quote]

Rate is subject to the condition of the toilet area.
A proper investigation needed to identify the water leaking issue and using the right method to solve it for long lasting

I guess many home owners experiences the water leaking was fix by contractors but the water leaking comes back after days, weeks, months....

Basically these are the method type of waterproofing repairs at toilet area depending the structural toilet floor condition.

1. PU injection chemical (no hacking)
2. Epoxy grout between the tiles joint (no hacking)
3. Epoxy flake coating (no hacking)
4. Water repellent chemical between the tiles joint (no hacking)
5. Hacking and redo everything new. New waterproofing, new screeding, new tiles.

To each method type waterproofing, there are advantages and disadvantages.

_____________________________________________________________________________________________

Your question regarding retiling is absolutely necessary to change if hollow sound can be heard on tiles
It must be replace as soon as possible because over time as moisture / water will be able penetrating into tiles and structural concrete. This will create big problem in future.

The present of moisture / water over time in concrete will result concrete deterioration that will encourage mold growth, bacteria growth and steel corrosion.
The concrete deterioration means weaker concrete strength and will eventually lead to structure concrete failure.
Structure concrete failure means massive crack inside the concrete.

That is the reason we always say be careful purchasing old house as massive repair needed to be done. Water leaking problem. Waterproofing problem. Crack everywhere.

mold growth

This post has been edited by Daang: Jun 2 2020, 08:35 PM

What are the pros and cons of the methods below? Can you Explain like I'm 5 please?


1. PU injection chemical (no hacking)
2. Epoxy grout between the tiles joint (no hacking)
3. Epoxy flake coating (no hacking)
4. Water repellent chemical between the tiles joint (no hacking)
5. Hacking and redo everything new. New waterproofing, new screeding, new tiles.

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.

currently no leaking but I think I want to apply waterproofing on my bathroom floor tiles lines. What is your advice on the method?

The upper floor shared bathroom ceiling has water mark during heavy rain (double storey house). What is the recommended method to repair it? Any recommended contact in klang valley?

Nice, every condo owner needs to know this

Hi sifus, i'm glad to have found this thread.

As you see in the image, i have a wall (between neighbour) that is moist at the bottom. Neighbour terrace house is actually on a higher level (about 3 feet higher). Our street is on a slope. Wondering if there's any long-term solution that can be applied?

(Sorry I did not read the previous thread - not sure if similar problem has been addressed.)

Thanks in advance.

Firstly need to identify the water leaking source, since you mention heavy rain only leaking,
1) it could be clogged drain that resulting water ponding, then overflow rainwater leak to the shared bathroom (this is not waterproofing problem)
2) if waterproofing problem, the need to study and access the condition. i) concrete surface (crack?) ii) the side of corner area (angle fillet) iii) does it have enough rainwater downpipe? iv) old waterproofing wear out?

You can PM for recommended waterproofing water leaking contact in klang valley. This will be good for lowyat waterproofing case study

From behind
1) If you could somehow access the concrete wall behind, apply with fast setting mortar cement, best to hack alittle deep (U shape) into concrete wall before applying fast setting mortar cement. The bonding strength will be stronger.
2) Another option is applying epoxy sealer around the area.

From front
1) use PU grouting injection chemical to fill the porosity crack concrete.
2) many ppl scrap the painting wall / plaster wall and apply with epoxy coating or waterproofing coating. Then repainting back. It works and you wont see leaking patches however there is a possibility in future growth of mold inside the concrete as the water / moisture will still be there

Hi,

My zinc roof at my balcony kinda leaks badly when it rains heavily. Beneath the zinc roof, there are plaster ceiling and they are already brownish in colour - not sure if it's due to the leakage or simply the paint is not good enough.

One part of the plaster ceiling eventually fell off and I could now take a peek at the leaks when it rains and seems like it's mainly leaking at the roof joints / "paku".

Do you know what to do to fix this permanently? Apply silicone on the paku area? Or something else?

Hey, thanks for the advice.

Unfortunately i won't be able to access from behind as it is neighbour's wall.

OK, will do the work from front. Ya, I think the future issue with the trapped moist will be an issue. sigh... But better than let it "rot" like now.

The nail should be at the top section of ~ zinc which shouldn't leak, unless it is heavy rain, whereby inclination of the roof is not steep enough to drain out the water fast.

There is a kind of tape or black soil stuff that can seal off the hole, which is easily available in hardware shop. Just tell them you want to seal off the nail hole of your zinc.

Hi Daang and sifus,

My masterbedroom bathroom is leaking to the lower floor. already did waterproofing using the solution but only last a few months and now starts to leak again. At the bottom of the stairs, there're water dripping from above.
Already asked quotation from a contractor. He suggested to do the whole bathroom.
What I'm not agree with him is the time taken. His proposal schedule:
1. hacking - 4 days for a 8x5.5' bathroom
2. Water proofing - 4 days( 2 days to cure and 2 days testing)
3. Tiling 4 days.

My question:
Is it really 4 days to do the water proofing?

I need shorter days coz I cannot take longer leave days.

Thanks

Is it altogether 12 days? That would be too long for a bathroom waterproofing work. But 4 days for the whole work that would be usually the case as hacking and tiling takes time, waterproofing needs time to cure as well. Water ponding test does require days but you do not need to be there to monitor.

Do take note that it all depends on toilet size as well, a typical toilet re-waterproofing work that involves hacking would take up at least a week, the time consuming part are hacking and tiling and can get quite messy. I wouldn't recommend those non-hacking waterproofing as it only delays the problem but not solving the root cause of it.

a friend was sharing a water leak problem

- 5 storey walk up apartment
- bought the 4th floor unit

apartment has several 'stalactite' mineral deposit from the roof. several inches from ceiling coming down.

- found that the problem comes from the toilet upstairs.
- owner upstairs refuse to repair their toilet

my friend did PU injection however water flow now to a wall. the wall looks like coloured. if look carefully, probably got fungus / mold.

any suggestion how to fix the problem without upstairs help ?

tks so much

Nothing.

Water will find its way to other areas .

Repair for the neighbour foc if he wants to solve the problem.

24 hours or less for ponding test is good enough
The ponding test required 24 hours practice is good enough to determine good waterproofing or not.
The idea is like this, nobody showering more than 24 hours with the water ponding the whole floor. Each time ppl shower, the water discharge to the downpipe and dry within an hour.

2 days is possible with 2 coats waterproofing + 24 hours ponding test
Due to less ventilation in toilet, the 1st coating waterproofing may take longer to dry compare 1st coating at outside exposed to the hot sun.
It depends the your shower ventilation condition. To speed up the process get a standing fan blow it.
If your contractor able to time this work well, he can apply 1st coating on late evening (same day he completed concrete hacking), let the overnight 1st coating cure and proceed with 2nd coating the next day. In the end it just took 1 day only.

4 days (waterproofing + ponding test ) is possible subject to factors.
2 days (waterproofing + ponding test) with 2 coatings and 24 hours ponding test is possible too but with good planning.

Curious can you share what waterproofing solution did you use previously and the leaking return again after few months? You mention dripping, is it a continuous dripping even without using the shower?



This is true, depend the toilet size, overall complete process it takes 6-7 days averagely for a typical size toilet.

Non-hacking waterproofing not recommended as it delays the problem and not solving the root cause.
This is also true especially the water repellent waterproofing, sealing between the tile joint, and other marketing gimmick waterproofing products.
why?
Most of the chemical will eventual wear out, less effective after months or 1 - 3 years (depend the concrete structure, how frequent usage of shower area). It only serve as temporary solution.
Imagine the rain repellent chemical you apply on car windscreen.

It also subject to the contractor knowledge method how to solve the given problem.

Only PU injection can fix from below.

Always be ready that PU injection might need 2 or 3 times to fix the leaking. This is important when you discuss the warranty term. Best to have the contractor to warranty the whole area. Example your leaking area is toilet, ask the contractor to give warranty the whole toilet area in the event new leaking appear.

I like to share a more technical knowledge about PU injection chemical. PU injection chemical has two types i) the common contractor use is Epoxy injection chemical (very rigid), ii) Flexible polyurethane PU injection (flexible and able cushion concrete movement)

The chance of a highly skilled people handling of PU injection could solve in one time is in fact high. It takes into account using the right chemical PU and able to analyze the hollow concrete while they see the PU foam (yellowish thing) appear.


This post has been edited by Daang: Jun 22 2020, 06:26 PM

Thanks for the feedback and explanation.

I can't remember the name of the solution. I bought it from the Hardware store. I use a brush to paint/lay the solution on the floor.

Hi Daang,

Thanks for all the good advice you've given here. I wish I actually found this thread or did some studying on roof repairs before I hired my contractor, but I've made many noob mistakes and is suffering now because of it. I trusted my contractor on everything he said - and yet now have serious doubts on his guarantee.

Initial problems:
1. There were ceiling holes and water leakage and yellow patches on my car porch and master room toilet ceiling at the front of the house.
2. there are further 3 random spots on upper floor ceiling that has yellow patches

My contractor came and review and advice me since the leaking are at different locations, to waterproof the roof to prevent future and more serious damage from the leakages. He also patched the ceiling holes.

Day 1 & 2 : Applying the bitumen coat. He did this during a cloudy and occasion rain condition. He mentioned that the little bit of rain will not affect the waterproofing.
Day 4 : He patched the ceiling holes.

My problem came 1 month after the repair with the patches that he did on the 2 biggest holes - they started cracking and big "flat" bubbles start forming.
My contractor said this is not a problem of leakage (because he said his warranty only guarantee any further leakages, but not the patching of ceilings), the cracks/holes he patch is already done to their best capabilities - he cannot guarantee that the patches will last.

I would like to ask your advice what are the possible cause of these cracks + bubbles - is there any way to proof that the issue is because of his bad handiwork so that he will fix the problems as part of the warranty? I have found out that i seriously overpaid him compared to market rate and felt deeply unsatisfied that issues are already popping up in just 1 month after the repair and he is now saying his warranty does not include fixing the ceiling patches, but only repairing the roof if it continues leaking.

Thank you and sorry for the long post.

Happy to help around. Happy to share what i know.

Your question what is the possible cause of these cracks + bubbles. There is dampness / moisture in the plaster ceiling he patches.
If his patching of ceilings has (crack + bubbles), there exist "trapped moisture" within the ceiling patches. As trapped moisture drying process and this will be the result of crack + bubbles.

[u]Few scenarios[/U]
1) The previous dampness plaster ceiling he patches over it (if it is damp, should not patch) instead replace new plaster ceiling?
2) the small leakage return (try touch it if there is any dampness)
3) he did not scrap off the old damage plaster fully and patches over it? (lower possibility)

It is true that many waterproofing contractor only do waterproofing and they are not so good in rectification work like plaster ceiling, skim coat, painting work.

eyes sore
Cracks + bubbles in plaster ceiling is really eyes sore, sorry to hear that, hopefully you can solve the matter.

Best Waterproofing contractor for home owner
To solve waterproofing problem at home, best to find the waterproofing contractor who has experience in all kinds of waterproofing chemical products AND also good in rectifying the plaster ceiling, painting works. You will experience less headache.

This post has been edited by Daang: Jun 24 2020, 10:45 AM

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.

My WC Drain Pipe connection when I flush some water will splash out from above the connection will that be the problem? But it is kinda a far away from the affected area.



======================================

THESE ARE THE AREA AFFECTED


THIS IS THE WALL IN THE OTHER ROOM ON THE LEFT


THIS IS THE WALL IN THE STORE ROOM ON THE RIGHT


THIS IS THE STORE ROOM


THIS IS THE OTHER SIDE OF THE WALL OF THE STORE ROOM THAT I HACKED UNDER THE SINK CABINET



What do you think ?
What should I do ?

This post has been edited by gordon12334545: Jul 21 2020, 10:24 PM

Wow, so ugly....really pening to fix this. Will be a permanent issues for life.
Maybe the only solution is hack the whole wall down and redo...hehe.

GG man if that is the case, Now I am kinda broke to do that.

any diy PU injection or it can only be done with whole set of non diy method?

I haven't try PU injection yet

Do people put sealent on their windows? In Western countries there's a tape you can put between window and frame. In Malaysia?

Lately heavy rains in Penang and it's like a fireman standing outside my window with a water house on the 14th floor

Water supposing should always flow down, it is unlikely that it is caused by WC Drain pipe. One way to eliminate that is WC issue is stop using this particular toilet for 1 week and see if the problem reduce.

Hi all, was checking out a landed house recently and saw these stains on living hall ceiling.
The walls were painted so couldn't see any flaws. And as usual owner/agent insist no leaking problems.

In this case what should be done to rectify and cost estimation?



Sorry for the potato cam

This post has been edited by gordonchin: Jul 23 2020, 02:03 PM

Hi sifu, I just received VP for my new condominium and found there's a big crack on the structural beam wall that leads to the water leaking. They have used some chemical to seal it up like on this picture. Any advice that you can provide to me to double check if the leaking will be completely fixed or the developer is just using some cheap solution and buying time?

Thank you

temp solution. havent address where is the source of the leak. those are structural cracks and not the normal shrinkage cracks. Weird it goes all the way down as supposed to have lintel above the windows. Try to check next door neighbors, above and below if can to see if it is a common problem.

Hi sifu,

My house roof slab is leaking and have approached contractor to inspect and give quotation, 2 contractors provide 2 different options,1 suggest to touch membrane water proofing, and 1 suggest with chemical coating.

Both pricing are about the same, which one you think will be better to take?

Go for torch on membrane.

Anybody tried Pye Waterproof Flexy Seal?
Since all waterproof cant last forever...why not yearly maintain it using this cost saving product and easily applied?

Hi there!

I'm not sure if this is the correct avenue to ask. But is there a way to determine where/which pipe is the water leaking from? I have a water pump at home that won't stop running, and I understand usually due to some leak somewhere. I've inspected all toilet/pipes that is connected to the tangki water/pump and couldn't find any possible leaks. Don't see any new water marks around etc. Any ideas?

Not sure is the correct to ask this.
I am staying in condominium and i have a pipe stuck required to fix the pipe from below unit but my neighbour do not allow me to fix it and my management cannot do anything.
Is there anyway i could get some assistant to get this done?
It been like this for 1 month , i am unable to use my kitchen.

isolate all by turning off the stopcock located in each bathroom and turning on one by one. that would narrow down the problem location. most pipes are hidden in wall and I doubt you can inspect those. usually can rule out kitchen and outdoor taps as those are direct. Unless your house piping system is designed to run on tangki as well then it is a bit hard to isolate

get a plumber. blocked pipe is usually easy to fix especially your problem is pipe going down and not from neighbours above. have you tried sodium bicarb n vinegar, plunger fix yet? Usually lard and food particles

Hi. Any recommended plumber to do this job in Putra Heights?

Is a new house. Seem like got those epoxy glue use to seal the leaking.

still under defect liability warranty period? get developer to fix. if not still need a plumber. if it is not leaking into your unit i dont think it is a problem. funny the unit below dont allow it to be fixed

Removing a clogged discharged pipe at below unit is a messy, smelly and dirty job. Seldom do owners agreed and especially those who spend some money for a nice kitchen.

You need to do this on your side ...

https://youtu.be/zw9p4KWlUwk

Other methods seldom work if you have tried and if is a bad clog.

This post has been edited by mini orchard: Aug 11 2020, 09:53 AM

How to rectify water leaking issue on balcony which its flooring already installed tiles.

The water from balcony (from rain) leaked onto bottom floor which is the parking. The water leaked kena the car and it's nightmare to clean it as the stain very hard to remove.

Any sifu can give some ideas?

Are you a DIY person ?

Not really a DIY person but if the task is manageable i probably can do it.

Any idea?

Cheap method b4 calling the expert ...

Checked for any cracked tiles and lossen cement joins.

For cracked tiles use Penten coating. Use a brush to to cover the crack.

http://www.pentens.com/product.php?l=&p=4&lang=en


For the lossen cement joins, remove and use silicon to fill the gap.

I see, previously got ppl advice me to brush all the joint using waterproof coating as the tiles itself has no crack.

But still the leaking happened.

And ur suggestion are using silicon to fill it? Can point to me which kind of silicon to do it?

Thanks!

Waterproof coating are for fine cracks and not for joins.

Buy those multipurpose type will do. You can find those at any hardware shops. Buy those "clear' type.

Alright thanks!

Edit- how foolish of me thinking silicone unable to withstand heat and rain.






This post has been edited by dman: Aug 11 2020, 12:06 PM

I've fix the WC issue but I am not sure how to know if it was fixed, when i touch the corner of the store room wall, it smells kinda musty, by the way that bathroom was rarely use.

When you can smell musty, it means it's building up molds and it's very bad for your health.
Get it fixed ASAP!

Hi
I got leaking at vertical wall
Inner wall is inside house
Outside wall is open area
Got a small horizontal crack at outside wall
Is that the reason water come in ?

Also can i use epoxy paint to cover it up ?
Can we put normal paint on top of epoxy paint ?
If cannot, what other way to hide that epoxy (eg. Put 1 thin layer cement on epoxy then sealer then paint ?)

[url=https://pictr.com/image/716hH5]
[/url]



This post has been edited by sitescope: Sep 5 2020, 10:28 PM

2nd question
Any similar product like croc crete ?
https://youtu.be/tUNiOsGAcPs

My pipe is clog with few cement fall from small renovations
I've tried vinegar n soda but failed

hi I got question here.. not sure if this is the correct place

One of my pipe, it was fitted with this kind of pvc plug (square), & it a bit far inside wall... any idea how to open it? Due to its beyond the tile wall, I cannot use adjustable spanner.... It seem overly tight..

is there any T wrench for this size?



This post has been edited by Ulysses: Sep 6 2020, 12:17 AM

Use a pointed plier.

Inject silicone on the affect crack areas.

But in future will the crack expand ?
Crack quite long
Thinking to epoxy the crack about 4" x 48"

Silicone is to reduce / prevent water from seeping into the house. Whether the crack appears or expand depends on what causes it ... if is foundation or ground movement, then it will reappear again.

Water leak thru cracks are not easy fix. You fixed one crack, there are other cracks appear somewhere....endless.

I have a leak going into my lower floor neighbour.

It is seems to leak from the floor slab.

I already did the epoxy flake coat in my bathroom. So seems that the leak is from internal and will need PU injection? How much will it normally cost?

Hi, I wanna seek advice on what to do with the leaking probs in my house... really headache, dunno what to do. Dun understand technical stuffs either.

I have 2 spots leaking at home that needs rectifications. This was due to terrible job by developer. I have given up lodging complaints as the problem persists despite XX times they try fixing it, couldnt solve the prob.

First spot: leaking at the car porch... the reason I suspect is due to cracks on the roof... see pics below...






2nd spot: water marks on plaster ceiling downstairs... leaking from bathroom upstairs. There are some pipes hidden in the plaster ceiling, unable to open up and see. So, not sure if it’s waterproofing issues or piping issues...


Should I engage plumber or waterproofing specialist? What are some solutions I can look into? Any advice would be appreciated... thank you very much in advance.

The fastest route is to remove the downlights and try to see if the water is coming from underneath a pipe.

If space is tight, use a mirror and flashlight to guide you.

(can buy one of those fibreoptic light scope from shoppe which can be connected to your phone)

If you see the watermark is above the slab where there is no water pipe then it is from the balcony.

What project is this may i ask?

The last time i checked it costs around rm80-rm150 per injection point.

I wonder where is the original TS Daang whom should be the one answering these questions.

I think epoxy product is overkill for your problem.
Just buy a can of acrylic or elastometric paint that can also act as crack filler and apply a few coats at the outside wall should be suffice.

For roof can use something like this

https://www.lazada.com.my/products/20kg-pye...co1ei8gnuv63lpf

For Plaster Ceiling, if you know where the pipes run, then it must be the pipe. Otherwise could be the cracked flooring of the bathroom. Just need to get pro to do this. If you just assume bathroom then need to redo flooring which is not cheap. If piping inside ceiling, redo ceiling probably cheaper since not removing whole ceiling

This kind of nut driver also can use. If cannot find square, the hex also can fit snugly if right size.

I have this problem also, and it's really make you sleepless nights trying to solve it.
I ended up engaging pro to do it that cost me RM20K to re-do everything on the whole house.

Now, it's coming back again the problem...so now saving up another RM20K to redo again....No choice, the only way to solve this is to sell the house and move to a new house and then when the problem comes, sell that house again and move again...until u no longer lives in this world

I have the similar problem ... the slab on the roof where the water reserved tank is located ... I construct roofing tiles to cover the open area and problem solved.

As for the leaking bathroom, cut the plaster ceiling where the leak is using a hacksaw blade to observe whether the leak is from the slab or waste discharge joints.

But i belip this is temporary coz it'll crack again
Heard epoxy is very hard diff to crack

M Residence 2 by Mah Sing...

Haha..... not every project oso of this quality ba...

I saw some products online that doesn’t require tile hacking on bathroom floor... they pour some liquid onto the floor, then it will go into the cracks n harden... therefore preventing water leakage thru cracks. Not sure if those products really work as advertised.... previously the developer hacked the tiles n redo several times too, but prob still not solved... I really dunno wat is wrong...

Thanks man

I can say almost 99.99% are like that nowadays.

Got also. The Pye one is pink color if I remembered it right. It is liquid form and fill the crack before hardened but remain flexible like silicone, but in this case where to pour?

The contractor did not do good job. The water proofing substance is mixed with cement. Nowadays there are ready made mixture. I think the main problem with your is at the corner where the floor and bathroom wall met. Usually the contractor did not do water proofing on the wall side. It need water proffing like at least 6" from floor. Normally this is the place where leak took place.

Just hack off all the floor tiles and wall tiles and redo just like I did....

Thanks for all the feedbacks 🙏

Well of course you can try any product that you think will give you longer term solution.
we are also still learning and just suggesting some alternatives to think about.

Personally i have used these elastometric product on cracks and with 2 coats (applied criss cross on the cracks) + 2 coats of paint (my choice nippon weatherbond) can easily lasts 5-8 years unless the wall has other structural problems.

This elastometric product u apply to indoor walls or outdoor?

That one I apply to outdoor cracks only before painting.
indoor walls as no water factor if there is cracks can just use putty to fill and repaint.

Ooo...ok. I will use it to paint the outside wall.

I am having some issues with my master bathroom (as pictured below). Is this an issue with the piping?

Would appreciate it if anyone could forward their previous contractors that helped waterproof their bathroom(s). I'm located at Ara Damansara.