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A Guide to the 4 Methods of Basement Waterproofing, Their Need and Advantages

Learn about the causes of moisture in the basement, various types of waterproofing methods, and the advantages of basement waterproofing to keep your home dry and safe from water damage.


Basements are an essential part of any home, providing additional living space, storage, and utility areas. However, they can also be a source of frustration for homeowners, particularly when it comes to water seepage or water damage. Water can seep into basements through capillary pores/cracks in the foundation or walls, causing, mildew, and even structural damage.

This is where basement waterproofing comes in. Basement waterproofing is the process of sealing and protecting a basement from water damage. There are many different methods of basement waterproofing, each with its own advantages and disadvantages.

In this blog, we will explore the various methods of basement waterproofing, the advantages of each method, and the common causes of basement water damage.

Causes of moisture in the basement


1) Hydrostatic Pressure :

One of the key factors that can cause moisture in the basement is water seepage through cracks in the foundation or walls. This can occur due to hydrostatic pressure caused by the surrounding soil or poor drainage systems.


2) Improper Soil and Drainage Systems :

A common cause of moisture in the basement is inadequate soil and drainage systems around the home. If the soil around the foundation is not properly sloped away from the house, or if there is inadequate drainage, water can accumulate and seep into the basement.


3) Poorly Installed and Maintained Gutters :

Poorly installed and maintained gutters can also contribute to moisture problems in the basement. Gutters that are clogged or not functioning properly can cause water to overflow and accumulate around the foundation, leading to water damage in the basement.


4) Condensation :

Condensation can be a major contributor to moisture problems in the basement. This occurs when warm, humid air comes into contact with cooler surfaces, such as walls or pipes, and condenses into water droplets. Condensation can be particularly problematic in basements that are not well-ventilated or have inadequate insulation.


5) Cracks in Your Basement :

Improper slope around the foundation and cracks in the basement walls or floors can also contribute to moisture problems. If the soil around the foundation is not properly sloped away from the house, water can accumulate and seep into the basement.Cracks in the foundation or walls can also allow water to seep in, leading to water damage in the basement.

Basement Waterproofing Methods


1) Interior Sealants

Interior sealants are a type of basement waterproofing method that involves applying a sealant to the inside of the basement walls and floors. Water can seep into a basement through cracks, gaps, or porous concrete, particularly in areas where there is high groundwater or poor drainage. This can lead to water damage and mildew growth, as well as damage to the foundation and structural integrity of the building. Interior sealants work by creating a waterproof barrier on the inside of the basement walls and floor to prevent water from seeping through. The sealant creates a barrier that prevents water from seeping through the concrete. However, this method is only effective for minor water damage and does not address the underlying causes of the moisture.


2) Exterior Waterproofing - Basement

The main source of the need for exterior basement waterproofing is water infiltration from the outside of the foundation walls. Exterior basement waterproofing involves excavating around the exterior of the foundation and applying a waterproof coating or membrane to the outside of the walls. It is an effective solution for preventing water damage and preserving the structural integrity of the building. However, it can be expensive and disruptive to install, as it requires excavation around the foundation and may involve landscaping and other repairs once the waterproofing is complete. Nevertheless, this method is the most reliable and long-lasting solution for preventing water infiltration in the basement.


3) Interior Waterproofing - Basement

The need for interior basement waterproofing arises when condensation is the main source of wetness. Interior basement waterproofing works by directing water that enters the basement through the walls or floor into the drainage system, which is then pumped out of the basement by the sump pump. The drainage pipe is typically installed below the basement floor and slopes downward toward the sump pump, which is installed in a pit at the lowest point in the basement. The sump pump is designed to automatically turn on when water levels in the pit reach a certain point, and it pumps the water out of the basement and away from the foundation.


4) Foundation Crack Injections

Foundation crack injections are a method of repairing cracks in the foundation walls from the inside, without excavating the soil around the foundation. The process involves injecting a liquid polyurethane or epoxy into the cracks, which then hardens and creates a waterproof barrier that prevents water from seeping through. This method is typically used for smaller cracks that do not pose a structural threat, and can be completed quickly and with minimal disruption to the building's occupants. However, it is important to note that crack fillers or injections do not address the underlying causes of the crack, which may require additional waterproofing measures. Additionally, this method is not suitable for larger or more severe cracks, which may require more extensive repairs.


Also Read : 6 Common Waterproofing Mistakes You Should Avoid



Advantages of Basement waterproofing

Basement waterproofing offers numerous advantages that can help protect your home or building from water damage and other issues. Some of the key benefits of basement waterproofing include :


1) Better indoor environment

Waterproofing your basement can help reduce moisture levels and prevent mildew growth, which can improve the overall air quality in your home or building.


2) Protection for basement floors

Moisture can cause damage to basement floors over time, but waterproofing can help prevent this damage and extend the lifespan of your floors.


3) Prevention of basement flooding

Waterproofing helps prevent water from seeping into your basement, reducing the risk of flooding and the resulting damage to your property.


4) Protection for your sump pump

A sump pump is designed to remove water from your basement, but it can become overwhelmed if there is too much water. Waterproofing can help prevent this and protect your sump pump from damage.


5) Protection against damage to structural elements

Water damage can compromise the structural integrity of your home or building, but waterproofing can help prevent this damage and extend the life of your foundation.


6) Reduced energy costs

Waterproofing basement walls from inside can help reduce moisture levels in your home or building, which can lead to lower energy costs as your HVAC system doesn't have to work as hard to maintain a comfortable temperature.

All in all, this blog covers everything you need to know about basement waterproofing. Basement waterproofing is a critical step in protecting your home or building from water damage, mould, and structural issues. By identifying the causes of moisture, choosing the right method and fixing the right basement waterproofing cost, you can ensure a dry and safe basement. Additionally, its advantages make it a smart investment for any homeowner or property owner, so get on and learn how to waterproof your home!

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