If water has made it into your basement for some reason or the other, you should try to get rid of it immediately by waterproofing your basement. Dampness and moisture in your basement can lead to a number of issues to your health while also leading to the growth of mold, mildew, bacteria and cracks.
These can all lead to issues that can adversely affect the structural integrity of your house. Therefore, it is necessary for you to waterproof your basement if you notice any of these issues.
To do so, it is important to first figure out how much it costs to waterproof your basement in the first place so that you can set aside a budget for this.
There are several factors that will help you determine the cost of waterproofing your basement. We will get into these factors in further detail as we proceed with this cost guide.
Waterproofing a basement can cost anywhere between $250 and $20,000 depending on your requirements. On average, it tends to cost around $4,000-$5,000, with the price per square foot being anywhere between $3 and $9.
This is a pretty wide range and won’t help you understand exactly how much you can expect to spend on waterproofing. However, using these prices and several online calculators, you can easily figure out how much it will cost you to waterproof your basement.
Calculating the Cost
You can calculate the cost by multiplying the square feet of your basement by the cost per square foot. You can either do this yourself or take advantage of several online resources at your disposal.
However, to make a more accurate calculation, you must first consider the following factors to ascertain the cost.
The size of your basement is one of the most important things you should be aware of while determining the cost of waterproofing. This, of course, further depends on how much and which part of your basement needs waterproofing, as well as the method that might be the best choice for this.
Once you figure this out, you will be able to get a better idea about the approximate cost of waterproofing your basement.
The foundation material that your house is built on is another factor that could impact the cost of waterproofing the basement. For instance, concrete foundations make it easy for water to get into gaps. This water can then make its way into the basement, causing mold and mildew.
Moreover, if there are cracks or leaks in the foundation, you will need to get those repaired immediately, which alone could cost you at least $500.
It is important for you to try to get these fixed as soon as possible, as they could otherwise lead to certain structural issues.
Source of the Issue
Different water or moisture-related issues in the basement will most likely need different methods of dealing with them. Thus, it is essential to figure out the source of the issue that requires you to waterproof your basement in the first place.
Some possible sources of excess moisture and dampness are:
- If there are cracks in your foundation or floor, water could find its way through these cracks and into the basement. Over time, the size of this crack could also increase.
- If there are problems with the drainage system of your window wells, it is possible that water pressure could cause water to enter your basement.
- Water pipes that leak or burst could be another potential reason for moisture in your basement.
- Sewers, gutters or downpipes that do not function properly could lead to water collection in the basement.
- It is entirely possible for water to seep into the gap between your walls and floors. This could then pour into the basement.
- The slopes around your home might have grading irregularities.
- Floods are an obvious reason for water collecting in your basement and getting into cracks, gaps and all small parts of your basement.
- If you are doing something inside your house that requires the usage of large amounts of moisture, this moisture could easily find its way into the basement of your house.
- If you live in humid climates or if your house tends to have high levels of humidity, this could be another source of dampness.
These were some of the main sources that could lead to water and moisture-related issues in your basement. The extent of damage from these sources is also important to gauge.
This means that if you catch these issues early on, it might cost you significantly lesser money to fix them. Waiting for too long could increase the damage as well as the cost.
Each of these will then require different solutions, making use of all kinds of methods for waterproofing your basement.
There are several different methods that can be used to waterproof a basement. This usually depends on the source of the issue and the most efficient way to solve it. The extent of damage that the issue has caused could also determine the method that you must use.
Each of these methods has varying costs due to the different processes involved in them. Let us look into these methods in more detail.
Waterproofing the interiors of your basement is a convenient and relatively more affordable solution to get rid of moisture. It can be a good solution if you have a well-built structure already and if the issues are not too deep. Overall, it could cost anywhere between $250 and $10,000.
Within interior waterproofing, there are a variety of processes that can be employed.
Dehumidifying: A dehumidifier is an appliance that you can install in your house to control and regulate the humidity levels inside your house. It does this by removing moisture from the air, thereby eliminating odors and the growth of mold and mildew.
This can be used to get rid of small-scale and minor issues of humidity inside the house. It tends to cost anywhere up to $2,000. However, you cannot use this for deeper and major issues of moisture collection.
Make sure you do enough research about the kind of dehumidifier you buy and how effective it will be in your own house.
Sealing: Per square foot, it could cost anywhere between $3 and $7 to apply a coating of sealant over small joints or gaps to prevent water from seeping into your basement through these openings.
You can roll or spray these sealants on the floors and walls that require this coating. This will provide effective protection to your basement from moisture and dampness.
These sealants can either be acrylic, epoxy or silicate and can be used on concrete. While acrylic and epoxy sealants remain on the surface of the concrete, silicate sealants seep into the concrete. Further, while acrylic and silicate will not affect the appearance of concrete, epoxy will change it.
Commonly, silicate and epoxy are applied together whereas acrylic is applied alone.
Paint: You can also easily apply waterproof paint (usually acrylic) to your basement walls to prevent moisture from seeping into them. This is a fairly affordable solution to control moisture as well.
However, for the waterproof paint layer to be truly effective, you will need to take a few other steps in advance, such as ensuring that the exterior of your basement is fully waterproofed as well. If not, the paint will not be enough to waterproof the basement on its own.
It is also more of a temporary solution as compared to a durable and permanent one.
Epoxy Injection: Epoxy injections cost anywhere between $200 and $500. You can apply this epoxy to small cracks in your walls or floors. This will prevent the water from seeping into the basement. After applying it, it will take about five hours to dry up.
This can be a good enough solution, but will only work for smaller cracks and gaps. While it is long lasting, its efficiency might reduce over time and also in colder climates.
Sump Pump: A sump pump can be a great way of getting rid of the water that might enter your basement through walls due to floods or similar issues. By placing and installing a sump pump in your basement, the water that comes in will enter the basin of the sump, after which the pump will remove the water.
A sump pump can cost anywhere between $700 and $3,000. You can pair it with other methods as well.
French Drain: An interior French drain costs anywhere between $50 and $100 per linear foot. This kind of drain will collect water and redirect it to a sump pump or directly away from the foundations of your house.
It should be installed around the inner circumference of the basement by digging into the concrete, installing the drain and other material and reapplying new concrete.
This method can be a good and assured way to control water from seeping into the basement.
Exterior waterproofing is a constructive way to prevent water from entering your basement. As part of this, the exterior parts of your basement and house are excavated or sealed.
Because this might require plenty of digging up, it is advisable to do this during the construction of your house as it might be difficult and risky to do in a well-built structure. Some of its processes can, however, be employed with a constructed house as well.
Exterior waterproofing can cost anywhere between $1,500 and $15,000, depending on the method you use.
Excavation: Excavation is one of the first methods that must be employed to waterproof the exterior of your house. It is best to do this while the house is being constructed as it requires access to your foundation. After excavation, the necessary waterproofing is installed.
It costs approximately $100-$200 per linear foot and can take an entire day to complete. It is, therefore, a long process that additionally requires plenty of labor.
You should ideally employ an excavator to do this for you through a company or contractor. This will include an entire crew of people. The prices might vary depending on the company as well.
Sealing: Sealing your exterior basement walls is a great waterproofing method. You might need to do this after excavation, after which you can apply the sealant. This can cost anywhere between $3 and $7 based on the kind of sealant you use as well as the cost of installing it.
The types of sealant that you can use include liquid membrane, sheet membrane, sodium bentonite sheets and cementitious. There are minor differences in how much they cost and which one you choose tends to depend on the soil quality, climate, material and impact.
Make sure you fill back the excavated material after sealing. You should also confirm details about the kind of sealant you can use for your walls.
French Drain: French drains are tile systems that you can install around the perimeter of your basement. The water that then collects is redirected to another waterproofing system or away from the foundation of the house.
These cost around $80-$100 per linear foot. This is a durable solution and can also be combined with any of the other waterproofing methods. While it can be a bit expensive, it is highly effective in the long run.
Gutters: Gutters can cost around $3-$30 per linear foot. Installing these gutters can be another helpful way of redirecting water away from your basement as well as the rest of the structure of the house.
However, you must ensure that you install high-quality gutters that function well. If they end up clogging, it is possible that the water will flow out and enter your basement.
Window Well Drains: Installing window well drains around your basement window (if it has a window well) can work well in preventing water from entering your basement.
When it comes to window wells, water from those wells can get into the basement easily. By installing a drain here, you can prevent this water from collecting.
Installing this drain costs between $500 and $1,500.
Grading: If you have a yard that slopes in the direction of your house, it is possible for the water to slope right into your house. Regrading this slope in a direction that faces away from your house can be an effective way of removing water and preventing cracks. This can also be combined with another method such as sealing.
This method can cost up to $4,500.
Once you figure out which method would be perfect for your waterproofing requirements, you will be able to have a better idea about the approximate cost. However, your calculation does not end here.
You will also need to factor in the cost of labor that you will require to help you install the above structures. This will further depend on the method along with the location that you live in.
Some companies might charge you a fixed single rate for the entire project, while others may charge per square or linear foot. You can expect to spend about $3-$10 per square foot for the labor you hire.
In some methods such as excavation or installing drains, it might cost you a bit more as these are more labor-intensive tasks as compared to other methods.
These costs might also include the costs of materials.
It is also possible that the warranty periods might vary depending on which company you opt for. While some might offer a good warranty that lasts several years, some might not back their service up with a warranty at all. Thus, you must make sure that you look into this properly before deciding which company to go with.
You must keep in mind that there might be a few additional costs that could increase the overall cost of waterproofing your basement. For instance, if certain appliances or objects need to removed from the waterproofing area, these could add to the labor cost unless you can remove them yourself.
Further, while looking for a company or contractor, make sure you ask around and do enough research to find a good one. You can also compare costs and quotes using various online resources.
Other factors such as water table level, cracks, mold and more might also require you to spend some more money.
Now that you have gone through this comprehensive guide about figuring out how much it would cost you to waterproof a basement, you can start determining these costs for your own basement.
It is important to invest some money in this now if you require it instead of allowing the moisture to fester for a long time. This could lead to several issues that could cost a lot more to deal with.
Remember to figure out a good method, consult multiple contractors and pick a good one for the job. Once this is done, you can set up a budget for yourself and start the waterproofing process to protect your basement and house.
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