Basics of Waterproofing

2. • Even with continuing technological advances in building materials,
water continues to create unnecessary problems in completed
construction products. This is most often due to an envelope’s
inability to act as an integrated system that prevents water and
pollutant infiltration. All too often several systems are designed into
a building that have been chosen independently and are acting
independently rather than cohesively.
• Detailing transitions from one component to another or
terminations into structural components are often overlooked.
Product substitutions that do not act integrally with other specified
systems create problems and leakage. Inadequate attention to
movement characteristic of a structure can cause stress to in-place
systems that they are not able to withstand. All these situations
acting separately or in combination will eventually cause water
intrusion.

3. Waterproofing
• Waterproofing is defined as treatment of
surface or structure to prevent the passage of
water under the hydrostatic pressure.

4. Damp proofing
• Damp proofing is the treatment of the
surface to retard the absorption of moisture
in the absence of hydrostatic pressure.

5. Why
Water
Proof ?

6. Types of Waterproofing Systems
• Integral Waterproofing
• Positive Side Waterproofing
• Negative Side Waterproofing
• Blind Side Waterproofing

7. Conventional Waterproofing Systems
Disadvantages
of
Box Type
Waterproofing
Cement
Punning
Bentonite
waterproofing
Tar Felt,
Bitumen
Coatings,
Asphalt Laying
China
Mosaic
Tiles
Brick Bat
Coba/Mud
Phuska
• Less durability.
• Difficult to install.
• No Crack Bridging.
• Not resistance weathering &
Chemical Attacks.
• No Elasticity.
• Not resistance
to chemicals.
Cannot be able to
prevent water
from entering
structure.
Cracks & Fails over a
period of time.
• Cracks & Fails over
a period of time.
• Cannot resist water
ingress.
• Cracks & Fails over a period
of time.
• Difficult to install & Rectify.
• Increase Dead Load
• Laborious and costly.

8. Integral Waterproofing
• Adding poly carboxylic, Naphthalene, sulphonate
based integral waterproofing compounds in
concrete & mortars.
• Adding Crystalline admixes in concrete.
• Grouting the structure with plasticized expanding
admixture grout.

9. Positive Side Waterproofing
• Sheet Membrane Systems
• Liquid Applied Systems
• Cementitious Applied Systems
APP, SBS, EPDM, PVC, HDPE,
TPO
Polyurea, Single component;
Double component
Polyurethanes, Cold Applied
Acrylic liquid membrane,
MMA
Two component
elastomeric coating,
Polymer Modified
coatings, Crystalline
Coatings, Three
component Epoxy

10. Negative Side Waterproofing
• Crystalline Cementitious Coatings
• Flexible polymer Modified Cementitious
Coatings Two component
elastomeric coating,
Polymer Modified
coatings, Crystalline
Coatings, Three
component Epoxy
Blind Side Waterproofing
• Grouts (Epoxy/PU/Cementitious/Acrylate)

11. Raft Bottom
Basements Retaining walls
Podium
Terraces
Roofs and Sunshades
Swimming pools and Underground ducts
Underground and Overhead Water tanks
Bathrooms and Wet Areas
Expansion Joints
STP Tanks
Planter Areas and DPC
Areas of Water-Proofing