A Complete Guide for Basement Waterproofing: Types and Costs for 2020

Basement renovation is always on the top list when you plan for a new basement, basement renovation, or basement remodeling. Water in your basement  is a serious issue as it can weaken the structure of the home and cause mold to grow. It also portrays an image of despair and dirtiness, and none likes that. Basement waterproofing systems help prevent basement leakages and damage to the woods and foundation.

If you are searching for the best Basement waterproofing in Toronto, feel free to contact us.


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Different Types of Basement Waterproofing and Waterproofing Costs:

Internal Basement Waterproofing

The main solution to this problem is the interior waterproofing. It means applying sealants to any problematic areas where the moisture builds up or where the cracks allow water to seep in. Interior sealants will keep the humidity level low in the basement, which prevents condensation from forming and stops moisture from absorbing into the floors and the walls. In the winter, interior waterproofing can help you to protect your basement against the water that originates from the melting snow and ice. If the basement walls are bare, you can apply concrete waterproof coatings directly onto walls.

There is also another option for you to use, the silicate sealer if you want. This sealant has high durability because it soaks into the basement walls and chemically reacts with the concrete to create a waterproof barrier. If you have painted walls, you will be required to use waterproof paint instead, as the other sealants will not stick together properly. Assure you use a brush or roller to apply a thick coat that can fill up cracks in every situation.

Interior Basement Waterproofing

Interior waterproofing is the least invasive and easiest option. You have to handle leaks and moisture. Your wallet will not take much of a hit from it, either when compared to the other techniques. You can easily access and implement the relevant interior waterproofing products, so you can choose to do it yourself or use the aid of a contractor. It is essential to know that interior waterproofing is a temporary fix, and it will not always address the root of the water issues you are facing. Waterproofing is suitable for small cracks and other minor fixes.

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Foundation Coatings and Concrete Basement Waterproofing

A thick, permanent concrete coat will help you keep the water away from your basement, even if it seeps through your external barriers. Expect to pay anywhere between $510 and $1,050 for expert-level internal concrete waterproofing. Coating costs lesser in labor if compared to other sealing ways because no excavation is required.

In addition to the easy coating, you can also use products like Perma-Seal epoxy sealer to keep your basement safe. This Acrylic/Epoxy mixture presents an especially durable solution that enhances the lifeline of your concrete floors and walls add to the seal. When performed by professionals, it will cost you between $3.5 and $13 per square foot depending on your location, product, and prior repairs required.

Silicate Concrete Sealers

Concrete sealers are comparatively cheaper at $0.16 to $0.26 per square foot. Add expert labor costs, and applying the silicate sealer will cost about $4 to $10 per square foot. Compared to concrete, silicate sealers work by piercing the walls on which they are applied. They incite a chemical reaction with concrete, increasing its chances to stay dry without changing its look. Your concrete walls will look like they did before if you opt for this method. Penetrating methods like silicates also work well because they let moisture escape instead of trapping it.

Basement Waterproofing Paint

The simplest way the interior walls of your basement can remain dry is to paint them with the right paint. This kind of paint is usually acrylic, providing it with the bonding it requires to keep the moisture away. Think of this method as a thicker version of everyday paint. One gallon of this basement paint is about $4 to $10 and covers almost 75 square feet. More expensive solutions like Ever Dry, which get designed for professional use, cost about $135 per gallon.


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External Basement Waterproofing

At the moment that your home is still under construction phase, external waterproofing might be your best choice. With this process, you must excavate the soil around the home’s foundation a few feet deep. Once it gets completed, you can have the external surfaces of your basement walls coated with waterproof membranes. Out of these, the most advantageous are polymers, which will last the lifetime of the home. External waterproofing will block the possibility of serious groundwater leaking, as well as water-based structural damage to the basement. You will also help prevent mold growth in this way. Because of access issues, sealing your crawl space costs between $1,520 and $15,100.

The downside to this kind of waterproofing is that it is more expensive in both time and money. You should only complete it in the beginning, building stages of the house. Digging up so much ground can cause issues, and it is a procedure on a completed home, as it can lead to the ground being unstable and can get counterproductive. External waterproofing also presents the possibility of blocking up external drains. Exterior waterproofing offers more of a precautionary measure and not utilized in response to the leaks in most scenarios.

If you consider exterior waterproofing to be the best for your finished basement, assure you can legally start your excavation. Extensive excavations generally require permits to finish them, and sometimes, only authorized contractors with special licenses might perform the work. If you want to evade wasting your time and money, start to dig in a dry time so that the ditch you construct does not fill up with water and delay progress.

Foundation Waterproofing Membrane

This option is more expensive than cement. When adding the drainage panels and including the cost for excavating, the installation of this membrane can cost you up to $16,000. At the same time, it may also be the most efficient solution for a dry home.

The process consists of fitting membranes onto your external wall. These membranes include rubberized asphalt, which is laminated by a waterproof polyethylene film. It is unforgiving and requires just the right installation- which is why this job is best if left for the experts.

When installed correctly, the flexibility of this method, when combined with durability, maybe the perfect fit for your basement, especially in wetter climates with clay soil that expands. It is not utilized as frequently for crawl spaces as it is for the full basement waterproofing, but its functionality remains the same.

External Weeping Tiles

Now you finally have the option available for removing the water before it even has a chance to seep into the walls. The price for installing a weeping tile system on your home’s exterior walls is $100 to $250, depending on excavation depth and accessibility.


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Despite their name, weeping tiles are plastic pipes with aligned punched holes. Water that could enter your walls instead enters these pipes, where it guides away from home. Especially in damp climates, external weeping tiles can perform well for concrete foundations, basements, and crawl spaces.

With the proper installation, grading, and materials, this may be the most sustainable and successful option for your home. You can install a weeping tile system besides not just instead of cement and membrane options.

The Water Drainage

Unlike the two other strategies, water drainage tries to move water out of the ground surrounding the basement and away from home instead of blocking it. A few porous plastic pipes get laid on the floor along with the walls of the basement. They gather water from the concrete walls, and the soil underneath into a holder known as a sump pit in a system called a drain tile. Sometimes plastic boards are also placed over the walls so that water seeping out of them falls straight to the fringe drainpipes. A sump pump then moves the collected water out of the basement and away from home. Water might also leave the pipes without needing a pump if the foundation of the home is above the surrounding area. Such a method relies on the pull of gravity to let the water move downwards away from the house.

The final destination of the water can differ depending on the specific case. You might direct it to the municipal drain, a buried place where it can safely and slowly absorb into the earth, or the open surface on the leveled ground.

Since water drainage needs electricity for the pump and needs pipelines, you should take some precautionary measures to ensure the smooth arrangement continues even in obstructive scenarios. You can attach a sump pump to isolated electric systems so that they remain functioning in the event of a power outage. Besides, integrating a freeze guard as part of the drainage path can give an exit for water if the pipes freeze in winters.

Water draining systems installation usually takes one or two days, and the price differs between the interior and exterior waterproofing. Installing a water drainage system disturbs the soil lesser than the exterior waterproofing, but it needs more work inside the basement than internal waterproofing. Their efficiency and relatively straightforward installation of the experts might prove to be among the most effective solutions to carry out.

You can get most interesting information for the Kitchen Renovation Ideas, Materials & Prices  by reading: Custom Kitchen Cabinets & Renovation Ideas [Materials & Prices for 2020].