Wall dampness or seepage solution cannot be repaired just with putty or paint. When the seepage is really bad, it causes water to trip from the walls and ceiling. It cannot be fixed with putty and paint only.
Seepage happens due to poor quality construction and lack of water proofing measures during house construction. It can cause dampness of the walls, efflorescence and peeling of paint. The moisture and dampness due to seepage can result in fungal and bacterial growth which in turn could cause various allergies to the occupants of the home.