Wondered if you can help me on my water leaking problems at my car porch.
My car porch have a flat concrete slab, and during heavy rain, the water will slowly drip through the concrete and onto my porch.

When I go above to check, i noticed cracks on the cement slab which may be the cause of the problem, especially near the edges (refer to picture). Note that I have done cementious waterproofing, and also coated the surface with epoxy resin, but that only lasted for a year before that gives way.

Would like to ask what can be done, and if we can do PU injection to stop the leaks. Or perhaps torch applied bituminous membrane ?


Appreciate if you can advise on my leaky problem...
Thanks!