Waterproofing Types, Methods and Applications
Waterproofing is that the formation of an impervious barrier over surfaces of foundations, roofs, walls, and other structural members. The function of the impermeable barrier is to forestall water penetrations. The building surfaces are made water-resistant and sometimes waterproof.
The utilization of liquid waterproofing membrane, cementitious materials, polyurethane liquid membrane, and bituminous material are commonly used by waterproofing companies in UAE and all around the world.
Waterproofing is important for the basement, walls, bathrooms, kitchen, balconies, decks, terrace or roofs, green roofs, water tanks, and swimming pools, etc.
Waterproofing Methods
- Cementitious Waterproofing
- Liquid Waterproofing Membrane
- Bituminous Membrane
- Bituminous Coating
- Polyurethane Liquid Membrane
1. Cementitious Waterproofing
Cementitious waterproofing is the easiest way of waterproofing in construction. The materials for cementitious waterproofing are readily available from suppliers of masonry products. and that they are easy to combine and apply.
The applications of the cementitious waterproofing technique are within the internal wet areas, like toilets. that's why it doesn't bear the contract and expansion process.
Cementitious Waterproofing Method
Applications of Cementitious Waterproofing
Water treatment plants
Sewage treatment facilities
Bridges
Dams
Railway and subway systems
Marine cargo ports and docks
River locks/channels
Parking structures
Tunnels
2. Liquid Waterproofing Membrane
The liquid membrane consists of a priming and two topcoats. the applying of the coatings is by spray, roller, or trowel. The liquid layer is thin and offers more flexibility than the cementitious varieties of waterproofing.
The liquid cures into a rubbery coating on the wall. The elongation properties of the coat can reach as high as 280%. the sturdiness of the waterproofing coating depends on what kind of polymer the manufacturer used for the making of the liquid waterproofing.
Liquid waterproofing membrane will be of a spray-applied liquid layer composed of polymer-modified asphalt. Polyurethane liquid membranes in separate grades for trowel, roller, or spray also are available from various manufacturers.
3. Bituminous Coating Waterproofing
Bituminous coating (asphalt coating) is formed of bitumen based materials. it's a versatile protective coat supported its formulation and polymerization grade. the flexibleness and protection against water are often influenced by the polymer grade and reinforcement of fiber.
The most common applications of bituminous coatings include areas that are beneath screed wet. it's a wonderful protective coating and waterproofing agent, especially on surfaces like concrete foundations.
It is not suitable for exposure to sunlight unless it's modified with a more flexible material like polyurethane or acrylic-based polymers.
4. Bituminous Membrane Waterproofing
Bituminous membrane waterproofing could be a popular method used for low-sloped roofs because of their proven performance. The bituminous waterproofing membrane encompasses a torch on the layer and self-adhesive membrane.
Self-adhesive compounds comprise asphalt, polymers, and filler; additionally, certain resins and oils could also be added to boost adhesion characteristics. The self-adhesive type contains a low time period as bonding properties of the membrane reduces with time.
Torch on membrane has exposed and covered types. The exposed layer often has granular mineral aggregate to face up to the wear and tear and tear of the weathering. For the opposite reasonably membrane, the contractor must apply one protective screed to forestall the puncture of the membrane.
Bituminous Membrane Waterproofing Method
5. Polyurethane Liquid Membrane Waterproofing
Polyurethane liquid membrane method of waterproofing is employed for the flat roof area and exposed to weathering. This waterproofing method is pricey.
Polyurethane Liquid Membrane offers higher flexibility. Polyurethane is extremely sensitive to moisture content. Therefore, before application, one has got to be very careful evaluating the moisture content of the concrete slab, otherwise peeling or de-bonding of membranes may happen after a while.
FAQs on waterproofing types, methods, and applications
What are the categories of waterproofing?
The most common forms of waterproofing are cementitious waterproofing, liquid waterproofing membrane, bituminous membrane, bituminous coating, and polyurethane liquid membrane.
What is that the purpose of waterproofing?
The purpose of the waterproofing is to forestall water penetrations into concrete surfaces.
Where is waterproofing used?
Waterproofing is important for the basement, walls, bathrooms, kitchen, balconies, decks, terrace or roofs, green roofs, water tanks, and swimming pools, etc.
What are the applications of cementitious waterproofing?
1. Water treatment plants
2. Sewage treatment facilities
3. Bridges
4. Dams
5. Railway and subway systems
6. Marine cargo ports and docks
7. River locks/channels
8. Parking structures
9. Tunnels
What is liquid membrane waterproofing?
The liquid membrane consists of a coat of paint and two topcoats. the applying of the coatings is by spray, roller, or trowel. The liquid layer is thin and offers more flexibility than the cementitious sorts of waterproofing.
