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Waterproofing solutions are used at various locations such as foundations(retaining walls), podium, water tanks, landscape, wet areas (bathroom,utility & balcony), terraces, swimming pools, etc.
TERRACE WATERPROOFING
Roof/Terrace Area-Waterproofing of any terrace area in general is very complex as it is exposed to variable weather conditions, foot traffic etc. It is often the leakage through the terrace that causes severe dampness in the ceilings, thus spoiling the look of expensive interiors and also leading to weakening of the roof slab and concrete. Critical parameters impacting selection of the material is based on the following
WET AREA WATERPROOFING
Wet Areas (Toilets, Bathroom, Balcony, Kitchen and Utility) – These are areas where water is continuously used for utility purpose or bathing. Wet areas are always critical location for seepage. There may be several weak spots such as wall joints, faulty piping that corrode are often the point of leakage. The moisture spreads through the floor and walls causing extensive damage.
HEAT REFLECTIVE COATINGS
Roof being one of the most affected parts of a building as it is directly impacted by heat, being exposed to extreme weathering during summer, it causes rise in temperature of the interiors of the room below, hence using such a system would help solve the problem.
Existing heat insulation systems like Brick Bat Coba, insulation boards etc. add a lot of weight to the building and on the other hand using a coating system to provide the same effect is not only more cost effective but also less time consuming and light weight. These systems are very tough and durable
INTERNAL WATERPROOFING
Internal Waterproofing this refers to the waterproofing of the internal walls that show efflorescence due to ingress of water by capillary action. It is generally observed that the walls along side of wet areas show efflorescence /damp patches of the paint. This rising dampness issue due to capillary movement of moisture can be concealed by treating it using selective products.
WATER RETAINING BODIES
Water retaining bodies includes swimming pools, ponds, reservoirs, potable tanks, sumps, overhead tanks, STP, Dams etc. These structures are filled with water and are constantly under pressure depending on the depth of the structure also are in contact with different types of chemicals hence have higher chances of leakage. It is necessary that the waterproofing system can handle these factors.
EXTERNAL WATERPROOFING
External Cracks can be rectified by using sealants in case of cracks larger than 1 mm by opening the crack all along its length to a certain degree of width and depth followed by filling the created groove using an elastic sealant such as an Acrylic paste, PU sealant etc. depending on the crack size followed by protecting the system using a waterproof coating or in case of minor cracks up to 1 mm, a non-shrink grout can be used. Grout is basically a filler material used to seal a gap
REPAIR WORK
Cold joints– Cold joints are formed primarily between two batches of concrete where the delivery and placement of the second batch has been delayed and the initial placed and compacted concrete has started to set. The full knitting together of the two batches of concrete under vibration to form a homogeneous mass is therefore not possible, unlike the compaction of two fresh workable batches of concrete. This could be a potential plane of weakness.
Construction Joints-are made where the concrete placement operations end for the day or where one structural element is cast against previously placed concrete. These joints allow some load to be transferred from one structural element to another through the use of keys or (for some slabs and pavement) dowels. Note that the construction joint extends entirely through the concrete element.
PODIUM & LANDSCAPE WATERPROOFING
Podiums form the base of any building/structure. It is subjected to a lot of stress such as being exposed to changing wreathing conditions, decorative features such a planters and heavy traffic. (Foot/ vehicle etc.).