Hi, my house external ceiling on the car porch having leaking issues. Weird are that:

i) today I noticed that it wasn’t leaking at all although raining heavily. Other time when no rain the water was dripping from the ceiling wall, bit by bit;

ii) the water dripping was white in color and there is whitish substance accumulating on the floor.

I have no idea where is the source of leaking. Any advise?


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View from the second floor master room window....the other/upper side of the car porch ceiling

How come leakage is whitish??


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today heavy rain but also not leaking at all

assuming you are right, what is your recommendation?

It resolved the leaking issue or not?

already paint 2 layers using water proof painting on top the car porch slab. unfortunately, beneath the car porch slab still leakings....2/3 days after raining time. possible water may come from elsewhere??

after new year, i will paint the third layer and hope for miracles. in btw, the waterproof paint brand i used is sikacoat. any comment?


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thanks. i think the water may get into cracks from elsewhere

that’s how my house concrete slab above the car porch look like

red arrow - leaking point beneath the metal plate

yellow arrow - slab flooring with crack which I initially thought it is culprit. But already paint 3 layer of waterproof paint and more paint was input onto the small crack area. Can’t really seen the crack anymore because already cover up by the hardening/ dry up paint.

dark blue arrow- my own suspicion the water may also get in on the joining points btw the metal plate and the wall. plan to use silicone glue to seal it up. hope it work.

anyway, i felt up with this issue already...if still don’t resolved, i leave it as it is.

This post has been edited by bcombat: Jan 4 2021, 10:09 PM

view from another angle - master bedroom window

to recap - before waterproof painting

was told the waterproof paint work on small crack.
not the major or bigger cracks areas

drain on car porch slab. but I already paint one layer onto it earlier