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Since the first structure was erected on Earth, water-proofing has likely been done to keep water from
entering the building in one way or another. The approach has evolved along with the evolution of
architectural styles and the accessibility of new building materials.
The emphasis used to be on building in a way that prevents rainwater from collecting on the roofs in the
early phases, when stone was the primary building construction material and was set in position with
mud or lime mortar. As a result, traditional architecture frequently used domes or roofs that sloped. The
sluggish pace of such building and the inability of the average person to purchase such structures for
their own homes led to continuous evolution and improvement in the technology of construction
These changes also affected the way waterproofing was thought about. A builder has a lot of
appropriate options when selecting a waterproofing method in modern building, where the standard
Portland cement and its mixes with puzzolonic and slag elements are here to stay. Some systems are
current ones created taking into account the material and structural behaviour, while others are
outdated and traditional yet are still effectively used.
To reduce water permeability, several substances are added to plastic concrete. These substances are
referred to as integral waterproofing substances. They are founded on the concepts of plasticization, air
entrainment, or water repellence. When additional elements, such as appropriate mix-design, proper
mixing/placing, compacting/curing, etc., are taken care of, these are employed as good waterproofing
measures. Integral waterproofing chemicals are a topic that needs in-depth explanation, hence it won't
be covered here. For vertical surfaces, there are several water proofing techniques as well. By slowing
down or halting the ageing process of these structures, these treatments are also employed to preserve
Customers utilise both traditional and cutting-edge waterproofing methods to solve water seepage
The following are a few examples of outdated and traditional waterproofing systems:
Lime terracing or a brick bat coba system
Treatment with bitumen
Wrapping sheets of metal
Waterproofing agent made of polyurethane
Treatment for waterproofing with epoxy
technique for waterproofing boxes
System of bricks and bats
This technique was created using lime mortar and clay brick bits that had been burned during the
earliest phases of flat roof building. This approach entailed spreading a light mortar over the roof to
create gradual slopes for right away draining away the rainfall. Lightweight brick fragments served as
aggregates in the mortar, which also contained pulverised brick that was bound together by lime.
This method gained more traction during British control not because it was effective at waterproofing
but because it kept rooms cool. With a nicely completed top and lines etched on top of the plastic
mortar now known as IPS, some installers acquired greater abilities in installing these systems. Some
people attempted making what they dubbed "china mosaic" by glueing broken ceramic or tile pieces
into the plastic cement.
In all major cities, this kind of system has continued to be most common with multi-story buildings.
When installed properly, the system can endure up to 15 years. Instead of its waterproofing capabilities,
this system may be valued more for its weather resistance. When water first enters the brickbat coba,
the brick pieces absorb an excessive amount of water, turning the roof into an ongoing invisible pond of
water that leaks and puts more pressure on the roof slab. The installation of brick-bat coba over a
flexible waterproofing membrane will be extremely advantageous since it allows for both cost-effective
water proofing and weatherproofing.
Treatment with bitumen
Bitumen is a crucial component for the building sector because to the discovery of petroleum and its
byproducts. More often than not, bitumen is utilised to create felt or flexible membranes by
sandwiching jute cloth or fiberglass/polypropylene matting between two layers of bitumen that has
undergone chemical modification. These membranes are installed over a bitumen primer on the roofing.
The edges of the felt must be heated with a torch so that they melt and adhere to the second layer in
the overlap region. There