How to understand Damp proofing vs. waterproofing
Groundwater moisture can cause damage to foundations because of their constant contact with earth. This is especially true in areas with poor drainage and high water tables. Water infiltration can be stopped by waterproofing and damp proofing below-grade walls. This will prevent structurally destructive and unhealthy mold growth. Drainage and waterstops around joints are two other methods to stop water infiltration.
Hydrostatic pressure is not a problem with waterproofing. Hydrostatic pressure is caused by gravity pushing stagnant-dense (static), water (hydro), against below-grade walls built partially or entirely below the water table, or on a hill. This causes liquid water to penetrate cracks and joints and permeate concrete via capillary action (wicking). Hydro pressure increases with soil depth, such as near ponds and creeks.
Damp proofing does not stop soil moisture from entering the wall. It doesn’t protect against water pressure. Damp proofings are best used in dry areas.
It is important to consider the location, level, drainage, soil conditions, construction methods, and other factors that can impact the necessity for waterproofing or damp proofing.
How to Use Damp Proofing
Damp proofing is an option for areas that don’t have hydrostatic pressures. It can provide long-lasting moisture protection to below-grade walls.
A damp proofing coating is typically applied by builders to the exterior of the wall. Damp proofing is a protective coating that stops soil water from seeping into the foundation. The thickness of damp proofing coatings is typically less than ten millimeters. This prevents moisture infiltration and slows down water penetration by blocking concrete capillaries.
Concrete can be made water-resistant by adding damp proofing to it.
Damp proofing: Problems
Damp proofing might not be able to seal larger cracks and holes that were left by form ties
Damp proofing can be damaged by a lack of backfill or carelessness
Hydrostatic pressure will cause water inflation and dampproofing will not stop it
Low temperatures can cause damp proofing to become brittle
How to Use Waterproofing
Waterproofing is a better seal than damp proofing against water infiltration into foundation walls. It protects a structure’s integrity, and increases the safety and comfort of the occupants. For areas with heavy rain or high water tables, waterproofing must be 40 mils thick to protect against hydrostatic pressure. This will allow water to penetrate the concrete.
Prefabricated membrane systems, fluid-applied membranes, and coatings are used to waterproof foundation walls.
Positive side waterproofing is installed post-construction. Access to the exterior face of the building is required.
Blindside installs the foundation before pouring it, on the outer side of the wall or building foundation.
Negative side waterproofing is installed on the interior of the building after construction.
Waterproofing, in addition to preventing soil moisture from entering the building envelope, can span cracks within the treated concrete, preserve flexibility and elasticity at low temperatures, and greatly reduce light-cycle costs. High-performing moisture barriers prevent methane, radion, and other toxic substances from escaping the concrete. This is especially important if the building is located on a site that has underlying contamination.
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Waterproofing vs Damp Proofing
Weighing both options
When deciding the right water protection for your structure, the following factors should be considered: soil conditions, water table levels, local drainage conditions and sub-grade depth. Also, the amount of moisture that is tolerable to the interior of the structure to be protected. Waterproofing is more expensive than damp proofing. It is best to specify the job correctly, execute it properly and make no repairs later.
Concrete coating projects require the same surface preparation.
It is not necessary to waterproof or damp proof your home.
Rethink!
Water is essential for life. It is also an element that can cause significant damage to your home or belongings if it is not used. Roof waterproofing is not something that many people know about or aren’t aware of. It is essential if you want your home to be strong and water damage minimal.
Mold development is one of the effects of water damage. Mould is a microscopic, often found in damp places. Its primary function is to break down organic matter. Mould can have a mildew smell and may also contain black, green, brown or grey spores.
Mould growth can be dangerous and can cause serious health problems. The existence of mold may not affect you if you are healthy and fit. People who are more sensitive to allergies or have health conditions such as bronchial asthma, are most at risk.
Inhalation of mould spores is the most common way to be exposed. Mold direct exposure can cause irritations such as sinus blockage, frustrations and rashes.
You also risk your safety and well-being. Your roof’s wooden roof covering trusses will eventually rot and become unusable due to water intrusion. Roof repairs can be costly, and roofing replacements are even more expensive.
Roof waterproofing can prevent all this. Waterproofing refers to the process of waterproofing your roof or framework so that water cannot penetrate. Under certain conditions, your roof will also be resistant to water damage.
Roof Repair Works Cape Community provides a wide range of waterproofing options, including polyurethane, veranda seal, flashings, parapets and personalized box seamless gutters. They also offer a variety of waterproofing solutions, such as lantern-on waterproofing, polyurethane and veranda sealing. Contact the group for more information and a free appointment!
Waterproofing is one of the most important things you can do for your home. Unfortunately, waterproofing is often overlooked. Water damage and leaks can cause severe architectural damage to your building.
Waterproofing can be a costly job. However, it can save you thousands of rands. You will pay more if you allow moisture to remain exposed for too long.
What are the best times to work with a waterproofing specialist?
It is a good idea to take a walk around your home and look out for signs of water damage. The sooner you identify any problems, the lower the cost of waterproofing. You may need a professional waterproofing expert if you spot any of these issues.
Remove paint and water bubbles
Mould, mildew and vegetative development
Split wall surfaces
Wood rot
Watermarks or Damp
Corrosion and staining
Odours
It is better to prevent waterproofing problems from happening. This is a great way to reduce your waterproofing rate.