What is Waterproofing?
Waterproofing in building construction is the procedure of making a structure water-resistant or invulnerable to the ingress of water. Waterproofing is vital as it avoids water from permeating structures and helps to keep the interior locations dry. It helps in decreasing the humidity inside the building, minimizing the damage done to furnishings and alike.
In areas that experience high annual rainfall and occasional flooding events, water proofing is a must. It is important for basements and foundations to be water resistant especially in locations where the ground water level is high. In the case of high water table, water in the soil is most likely to exert hydrostatic pressure on the basement floor and walls. This can require the water through the fractures, which can result in structural damages along with moisture-related issues such as mold, mildew and decay.
Throughout monsoons, all of us would have stumbled upon water seepages in the ceilings and walls or wetness in the after-effects of flooding. This is due to poor waterproofing By waterproofing your home, you can protect your building from damage in addition to the things inside your house from humidity and water exposure.
Benefits of waterproofing.
Safeguards the structural stability of the structure
Avoids mold, mildew and decay
Prevents metals from rusting and wood furniture from decay
Prevents seepages from the ceiling and walls
Avoids wetness inside the building
Property value boosts
Residential or commercial property value
Unhealthy living areas and a weak foundation can considerably decrease the residential or commercial property value. Waterproofing increases the resale value of a building, which is perhaps among the biggest benefits. Investors/buyers barely even consider houses without waterproofing. A number of homeowners reside in houses with damp and dripping basements, typically fearing the expense of waterproofing. However, getting this necessary workout done with fetches noteworthy rate of return. A waterproofed basement increases the utilizable square footage in a house, all at once ruling out the possibility of a looming structural failure.
Waterproofing Methods & Techniques
Brick Bat Coba Method
RCC pieces sometimes establish fractures, which permits a passage of rainwater. It is for that reason crucial to develop water-proof roofing system slabs, which can offer leak-proof environment to the interiors of the structure. This approach needs a roofing surface slope for quick drain and sealing of all fractures and joints. Flat type roofing with RRC is utilized in climates with moderate to low rainfall. Coba treatment can be performed straight on RCC or stone slabs.
Brick Bat Coba
The surface area of the roofing slab need to be cleaned up and washed with water before laying the very first course
A fresh slurry is prepared by mixing cement with 1-2% very seal powder (acrylic based acrylintryl chemical).
The slurry is first combined dry and then water is included till it reaches a consistent consistency.
This freshly ready slurry is spread on the cleaned roofing surface area to develop a smooth thin layer.
Cement sand mortar is prepared by adding 1-2% very seal powder in a 1:5 cement sand dry mix (1 part cement, 5 part sand).
Water is contributed to obtain a plastic mortar.
This cement mortar is spread out on top of the thin slurry layer to get a 20mm thick cement mortar layer.
Brick bats are placed in the 20mm cement mortar layer to create a 100-150 mm brick bat later layer.
The cement sand mortar is then utilized for grouting the formerly laid brick bat layer. All spaces and joints are filled. Make sure a smooth slope surface over the brick bat layer.
Newly ready plastic cement sand mortar is further spread on the grouted brick bat layer.
The grouted surface is permitted to cure for 2-3 days to prevent surface area fractures.
Another cement sand mortar is prepared (1 part cement, 5 part sand) with 1-2% incredibly seal powder. Water is included till the mixture is consistent.
20mm thick layer of this mortar is topped the brick bat mortar layer.
A trowel is used for completing. Square markings can be made by string or trowel. This is to avoid surface area breaking due to expansion or contraction in reaction to temperature change.
Curing is continued for 2 weeks.
A water-proof membrane is a thin layer of water tight product that is laid over the surface area. Stagnated water is most likely to seep into the structural piece overtime. In flat roofed terrace, the membrane is laid over a filler material that is sloped to make sure that water is receded by drain pipes.
Sheet Based Membranes.
Sheet based membranes are available in the kind of rolls. These are unrolled and laid on the firm surface. One of the most common sheet based membrane is the bituminous waterproofing membrane.
Liquid Applied Waterproofing Membranes.
These are the kind of membranes that come in the form of liquid that can be sprayed or brushed onto the surface. By spraying, the liquid forms a monolithic membrane, without any laps, welds or seams.
Polyurethane Waterproofing Treatment.
Polyurethane is comprised of two components, base and reactor. Polyol acts as the base, while isocyanide is the reactor component. The mix of both these in a specific design ratio produces a liquid coating for waterproofing applications. Polyurethane is a rather popular option due to its ease of setup.
Concrete joints are most liable to seepage. Waterstops are aspects of a concrete structure that prevent the passage of water through concrete joints. They are designed as fluid tight diaphragm embedded in or running along the joints.
Apart from all these techniques discussed here, basement waterproofing needs competent and skilled treatments. You can find out more here: Waterproofing contractors