The reasons for these are many, ranging from poor construction to lack of a good rainwater draining system. Sometimes, a good many number of building parts, or even entire buildings have little or no exposure to sunlight. Correcting these anomalies is beyond the realms of practicality. Such being the case, it will be only wise to take the next best recourse.
Architects, builders, consumers and the waterproofing industry have identified the problems associated with moisture in buildings and have come up with solutions that can keep the building dry for the most part of the year. When the rainy season sets in, they have come up with techniques that will get the water off the building fast, so that pooling and leaking of water into the structure can be contained. Adding slopes in the roofing area wherever possible and rainwater harvesting project incorporated into buildings can stem this problem to a large extent.
It has been identified that water has a tendency to seep into the adjoining walls that are at different levels. Extra care during construction and plastering of these areas can control the damage caused due to dampness. Sometimes, water seepage can happen when there is error in the installation of the plumbing system. Then there are those instances when there can be inadequate surface preparation, improper use of primers, failure to take into account the thermal and wind movements of the structure etc which can undermine the strength of the construction over a period of time.
No matter what the problem, there are mostly ready-to-use products available that can repair possible damages to the buildings. If you are constructing a new facility, you can use them in the first instance, but if you are trying to protect an old home, you might have to walk that extra mile. Nevertheless, you can be sure that it is worth the effort.
Open areas like balconies, porches and terrace slabs, which tend to be exposed to rainwater directly and for a longer time, will do well to mix admixes which will plasticise the walls and plug in the pores so that they do not retain water and absorb it later. As always, the market offers a range of these admixes with various grades of plasticising agents both in the paste and powder form. People looking at longevity of their constructions even have the options to fill hollow cement bricks with this mixture to make it waterproof from within.
Roof & terrace
It is universal knowledge that the roof and the terrace of any building are always exposed to the natural elements. This, coupled with bad upkeep can make the area develop cracks. Hence, waterproofing the terrace can protect it. You really do not need professionals to do this job, for the method is very simple. Sweep the terrace clean, wash it with clear water. Leak-guard pastes available off the shelf can be used to plug in cracks, dents and chipped area of the terrace.
Similarly, waterproof powder and chemical can also be bought in any hardware shop. Mix the powder as instructed in a bucket of clear water and apply the liquid to the surface with a wide paint brush. Apply a second coat after three hours and be rest assured that your terrace is safe for the next three to four years. As of now, there are no permanent waterproofing techniques for the roof; hence the need to repeat the exercise time and again.
Basement areas tend to become swimming pools during monsoons. The slope and the rainwater drains don’t help much, unless planned and executed well. You can prevent your basement from becoming redundant if you use appropriate waterproofing. While new basements can use structural procedure, old buildings have to first release the surface of the mould. Fumigation and subjecting the area to hot air blasts can clean it to a large extent. If the walls of the basement have started chipping or flaking, it will be worth the investment to get them plastered again before working on the floor.
Then, use non-metallic heavy duty floor hardener to reinforce the floor. Though this measure is costly, it has a long life and can be easy to clean and maintain. Waterproofing buildings has come of age. There are plenty of options in terms of both price and quality. The best time to waterproof buildings will be summer. Make sure that your homes and offices wear their rainproof cover before the first drizzle.