Solving the problems of Water leaking and Waterproofing matter is totally different thing. 

Water Leaking problems such as Roof tiles leaking and Pipe Water Leaking and Windows leaking involving handling tools object like hammer, nuts, screwing, glue, silicone, dismantling, assembling to fix.

Waterproofing problems such as toilet floor leaking, roof slab leaking, balcony leaking, wall leaking involving knowledge of Waterproofing chemical products to fix.