WHAT IS THE MEMBRANE
WHAT IS THE MEMBRANE
The purpose of waterproofing membranes is to prevent leaks from occurring on a surface. Water penetration and leakage,Waterproofing membranes serve as protective layers which can be applied either on the roof, retaining walls or basement of a structure. There are different types of waterproofing membranes which can be broadly classified AS sown in the picture explain each in detail
WHY IT IS IMPORTANT
Waterproofing membranes are designed to protect a surface from the perils of leakage. Water penetration and leakage, if neglected, can have disastrous consequences for a structure. Membrane protects a building against all types of water damage and prevents further repairs.
Excess water exposure can enlarge the foundation cracks and joints, leading to issues with leakage, deterioration, and spalling that will require repairs. Before water damage leads to bigger issues in a building
Membrane Waterproofing can provide:
1. Safety: Lack of waterproofing can severely damage a building's integrity, resulting in an unsafe environment.
2. A way to strengthen the structure: A waterproofing membrane prolongs the lifespan of a building by preventing moisture from intruding and causing rust, rot, corrosion, structural defects, or other damage.
3. A healthier environment: By waterproofing a space, you can ensure that it is well-maintained and protected from the elements As a result of fungus and mold growth on the walls and ceilings, allergies and health issues can develop.
4. A way to reduce maintenance costs and increase property value: Quality waterproofing — done right the first time — will safeguard property from water damage and limit the need for costly repairs or maintenance services.
CLASIFICATION OF MEMBRANE
There are different types of waterproofing membranes which can be broadly classified as sheet-based membranes and liquid-based membranes. Sheet-based membranes are in the form of rolls whereas liquid applied waterproofing membranes come in the form of liquid that can be sprayed on the surface.
A. SHEET BASED WATER PROOING MEMBRANE
Sheet-based membranes are in the form of rolls. Bituminous waterproofing membrane is one of the most common sheet-based membranes
Sheet Based Membrane further classified in two
1. WATER PROOFING MEMBRANE
2. GEO MEMBRAEN
A. WATER PROOFING MEMBRANE
A membrane roof is a flexible or semi-flexible roof covering material that primarily waterproofs a roof system. It can be made of a single material or several laminated materials together. While membrane materials can sometimes be used on residential roofing, they are primarily used for commercial or industrial buildings with flat- or low-slope roofs.
1. APP - ATACTIC POLYPROPYLENE.
APP membrane is the most commonly used waterproofing material on concrete roofs and low-slope roofs. APP membrane is applied to asphalts with a torch. Applications of APP membranes aren’t limited to just roofs. Man made ponds, bathrooms, water tanks, curtain walls,
APP membranes are characterized by high tensile strength
APP membranes are 100% impermeable
APP membranes are easier to apply
APP membranes are durable and won’t succumb to changing climatic conditions
2. SBS - STYRENE BUTADIENE STYRENE
It is SBS (Styrene Butadiene Styrene) modified, torch-on elastomeric waterproofing membranes
· membranes are durable and won’t succumb to changing climatic conditions
3. SELF-ADHESIVE MEMBRANE
It provide self-healing properties, easy application and great durability.
The installation is much easier and quicker.
4. EPDM - ETHYLENE PROPYLENE DIENE MONOMER
EPDM membranes are single-ply membranes that are suitable for a wide range of applications, including waterproofing basements, roofs, terraces, expansion joints, wet areas (toilets), and facades.
No torches or gas required during installation.
Resistant to UV, Ozone, and air pollutants.
Temperature resistance
Lightweight
5. TPO - THERMOPLASTIC POLYOLEFIN / PVC - POLYVINYL CHLORIDE
TPO (thermoplastic polyolefin) is a single-ply white membrane used in both commercial and residential roofing. Due to TPO being a white membrane, it reflects heat instead of absorbing it.
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Compared to many other types of roofs, TPO roofs are extremely long-lasting. They hold up well to long-term exposure to the sun's ultraviolet light, and they are highly resistant to puncturing, tearing, or water damage.
B. GEO MEMBRANE
A geomembrane is a thin, synthetic liner or barrier used to control the movement of fluids (liquids or gases) in or out of a human-made structure or system. They are typically made from
1. HDPE - HIGH-DENSITY POLYETHYLENE
2. PVC - POLYVINYL CHLORIDE
3. LDPE - LOW-DENSITY POLYETHYLENE
4. EPDM - ETHYLENE PROPYLENE DIENE MONOMER
5. TPO - THERMOPLASTIC POLYOLEFIN
PROPORITIES OF GEOMEMBRANE
Impermeability: Geomembranes are very low permeability, which means that they are very effective at preventing the passage of liquids and gases.
Durability: Geomembranes are designed to be durable and last for many years, even in harsh environments.
Resistance to chemicals: Geomembranes are resistant to a wide range of chemicals, including acids, bases, and solvents.
Flexibility: Geomembranes are flexible, which makes them easy to install and conform to the shape of the ground
APPLICATION OF GEOMEMBRANE
Landfills: Geomembranes are used to line landfills to prevent the leakage of leachate (contaminated water) into the ground.
Canals and ponds: Geomembranes are used to line canals and ponds to prevent water from leaking out or seeping into the ground.
Reservoirs: Geomembranes are used to line reservoirs to prevent water from leaking out or seeping into the ground.
Mining: Geomembranes are used in mining operations to prevent the contamination of water and soil by mining waste.
B. LIQUID WATERPROOFING MEMBRANE
Liquid applied waterproofing membranes come in the form of liquid that can be sprayed on the surface.
Liquid waterproofing membranes are a type of coating that is applied directly to the surface of a building or structure to create a waterproof barrier. They are commonly used in moist environments where high levels of water are present like roof, terrace, bathrooms, wet rooms, and basements. These membranes work by forming a continuous and seamless layer over a surface which prevents water from penetrating into the underlying materials.
Different type of Liquid membranes
1. WATER/ACRYLIC-BASED MEMBRANE
Water/acrylic-based liquid waterproofing membranes are usually made from a combination of acrylic polymers and other additives, making them highly resistant to water and other environmental factors, such as UV radiation
2. POLYURETHANE (PU) MEMBRANE
Polyurethane membranes are highly elastic and can withstand both positive and negative hydrostatic pressure. They are commonly used in roofing applications and can resist exposure to sunlight and other environmental challenges.
3. BITUMINOUS LIQUID WATERPROOFING MEMBRANE
Bituminous membranes are made from a mixture of bitumen and other materials such as polyester or fibreglass. They are highly resistant to water and can be applied to a variety of different surfaces including concrete, metal or wood.
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