Reliable waterproofing contractor wanted

Reliable waterproofing contractor wanted for a home in panaji, goa
Water is leaking through the roof during monsoon, and damaging, the walls,furniture and other items in the house
There is no major problem during the rest of the year.
Contractor will have to check the roof and give a quote for the work which has to be done
Prefer a contractor who will offer a warranty on the work done,
Other similar maintenance and waterproofing work is also available for more homes.