WATER RETAINING STRUCTURES
Water Tank & Pool Waterproofing
A water-retaining structure holds pressure from the inside, permanently. The tolerance for a wrong specification here is zero.
SYMPTOMS
What You Are Probably Seeing
Leakage shows up somewhere other than where it starts. These are the signs we look for — and what each one usually means.
Water level dropping with no usage
Leakage through the base, walls or a construction joint. Measure it over 24 hours before assuming evaporation.
Damp patch on the outside of the tank wall
Water is already through the wall section. Surface treatment inside will not be enough on its own.
Cracks in the tank floor or wall
Shrinkage or structural movement. These need routing and filling before any coating.
Leakage where the pipe enters
Penetration detail. The concrete rarely fails — the joint around the pipe does.
OUR METHOD
How We Approach It
The same four steps on every job. The system changes; the method does not.
01
Empty, clean and test
The tank is drained and cleaned so the actual leak path can be seen, not guessed.
02
Treat cracks and joints first
Routing, plugging and joint treatment before any coating. A membrane over an untreated crack simply moves the leak.
03
Apply a system rated for water contact
Cementitious systems that hold under continuous water pressure and remain suitable for the tank’s intended use.
04
Cure and fill test
Full cure, then a controlled fill and observation before handing back.
MATERIALS
Products We Use for This
Everything we apply is available to buy directly — same material, whether our team applies it or yours does.
FAQ
Questions We Get Asked
Is the coating safe for a drinking water tank?
How long must the tank stay empty?
Do you also waterproof swimming pools?
CLIENT REVIEW
What a client said
★★★★★
“We contacted Premium Sealers for waterproofing of our underground water tank in Karachi. Their team knew exactly what needed to be done and used proper waterproofing materials. The work was neat and the leakage problem was resolved. Good experience overall.”
Salman K.
Karachi · Underground Water Tank
Not Sure What Your Building Needs?
Send a photo of the problem on WhatsApp. We will tell you what is likely happening and which system suits it — before you spend anything.