Waterproofing A Basement

How much should waterproofing a basement cost?

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    You may be wondering how much it costs to waterproof a leaky, damp basement.

    Excessive basement moisture can cause structural damage, home value loss, mold, and bacteria growth. Mould and bacteria in your basement can aggravate asthma.

    To avoid these consequences, waterproof your basement ASAP. Before you do this, create a budget so you can plan for the expense.

    If you need your basement waterproofed asap and want to know how much it will cost, read on. We'll share the factors that affect the final price as well as average basement repair costs.

    Your damp basement is causing problems. You notice musty odors indoors, you're coughing, and the floor and walls are colder than usual. Waterproof it. But how much?

    Let's compare interior and exterior basement waterproofing costs so you can budget.

    At Hitch Property Constructions, we offer the best range waterproofing services to rectify your water issues.

    Understand the Different Solutions

    There are a variety of solutions that can be used in tandem or separately, depending on the severity and the cause of the damp problem in your basement.

    Waterproofing A Basement


    You may decide to purchase a dehumidifier in the event that your moisture issues are only mild. The installation of this system will typically cost between $1,300 and $2,000 and is useful for controlling moderate sources of moisture found within a building, such as the drying of laundry. On the other hand, a humidifier is not going to be able to solve more significant damp issues by itself.

    If the dampness is coming from the outside of the building, using a humidifier to try to fix the problem could cause even more damage. If you dry out the air in the basement, more water may be "sucked" through the walls, which may lead to efflorescence, concrete spalling, and additional damage to the interior finishes.

    Waterproofing Products

    You also have the option of applying a water-resistant coating, such as paint, sealant, or another product, to the walls inside of your basement in order to prevent moisture from seeping in through the cracks. This is a straightforward solution that is also economical, with the cost ranging between $20 and $200 per can of paint, in addition to the costs of labor.

    However, it is most effective when used in conjunction with other preventative measures. It is possible that you will be able to keep moisture out of your basement if you apply a waterproof coating to the interior of your basement; however, moisture will still sit in the walls and foundations, which is not ideal.

    Proper Installation of Downpipes and Gutters

    Imagine that your gutters and downpipes have been improperly installed, are broken, or are completely absent from your home. In that scenario, this will have the effect of channeling all of the water that is draining off of your roof directly into your foundations and then down into your basement.

    The cost of installing new gutters and downpipes on your home can range anywhere from $550 to $1,350, depending on the dimensions of your property. If, on the other hand, you already have some guttering installed and it just needs to be fixed, the costs might be reduced.

    Installation of Window Well Drains

    You have the option of installing window drains if the accumulation of water in your basement is caused by window wells that are not constructed appropriately. If the windows in the basement are the source of the issue, this is a solution that, despite the fact that it can cost anywhere from $500 to $2,000 to implement, is very effective.


    It's possible that your damp problems are being made worse by the fact that the grass around your house slopes directly toward it. This could be allowing surface water to seep into your foundations. If you are not opposed to having your garden graded, you might be able to re-slope some areas for between $900 and $3,000 if you are willing to invest in the project.

    However, it is important to keep in mind that this solution on its own is not likely to be successful.

    French Drain Installation

    French drains installed on the exterior of your home are an efficient way to remove water and keep it from seeping into your basement. Drains of this type are installed all the way around the foundations of your home and typically cost between $1000 and $1500 for every 50 feet of length.

    In addition, French interior drains can be installed within your basement if you want to. However, the price for these items is typically higher.

    Sump Pump Installation

    In addition to a subfloor pressure relief system, installing a sump pump in a damp basement can be an extremely effective fix. This is especially true when the two are combined. It is estimated that the cost of installing a sump pump will range anywhere from $500 to $1100, with the exact amount being determined by the quantity of pumps needed and the manufacturer chosen.

    If your basement does not already have a pressure relief system, you will need to have a sump pump and a subfloor pressure relief system installed as soon as possible.

    Foundation Crack Repair

    You will need to perform some foundation crack repair if you have cracks in your foundation that allow water to enter your basement.

    Depending on the number of cracks, the quality of the crack repair job, and the materials that are used, this could cost anywhere from $500 to $1,000 or even more.

    Interior solutions for basement waterproofing

    Methods for waterproofing a basement that are based on the interior of the house, also known as "negative side" projects, involve draining water from inside the house. It's possible that fixing a water problem from the inside will be the more cost-effective option, particularly in situations where working on the outside of the building is either impossible or impractical.


    In conjunction with a sump pump, this system drains water away from the house through a hole or trench that has been dug into the foundation. Insulation of the basement walls should also be included in such a system. Additionally, a vapour barrier should be included to prevent condensation.

    Drainage systems begin at approximately $2,000 in cost. Including excavation and the cost of a sump pump, the national average cost of installing a French drain is somewhere between $7,100 and $9,700; however, the actual price may be higher or lower depending on where you live.


    They claim that sealants fail far too quickly, which is why some highly regarded waterproofing companies do not recommend using them. It is possible for the price of a waterproofing project using sealant to range anywhere from $4 to $8 per square foot.

    Epoxy injection

    In the same way that sealants are not always recommended, this option is not always preferred because it might only provide a temporary solution to the problem of filling cracks in poured-concrete walls. Epoxy injections can start at a price of $300 per treatment.

    Exterior solutions for basement waterproofing

    Exterior waterproofing projects are sometimes called "positive side" jobs because the aim is to prevent water from getting in the house.


    If it is done correctly, many contractors believe that installing an underground trench or a perimeter drain is the method that is going to be the most effective. Having said that, the cost could be quite high. The cost of an exterior waterproofing job for a basement is typically between $8,700 and $14,500, but it could be more or less depending on where you live.

    The national average cost for such a job is between $8,700 and $14,500. The cost could go as high as $80,000 depending on how easily accessible the areas being targeted are, the amount of digging that must be done, and the amount of landscaping or other work that must be restored after the excavation.

    Sodium bentonite

    The addition of a clay material to the dirt around the home in order to fill cracks and absorb water is a technique that is frowned upon by some waterproofing contractors. They claim that it is a short-term solution that is difficult to control because clay has the potential to clog outdoor drains. Starting costs for this approach are approximately $500.

    Preventative Tips

    Check your home's foundation for low spots, tilting service walks due to ground settling, properly attached downspouts, and debris such as leaves in window wells causing water to overflow basement windows. Fill low spots with dirt, grading it away from the house. Adjust settling paths so they don't dam water.

    Make sure your home has gutters and downspouts to properly dispose roof water runoff (one of the main causes of a wet basement) and that your downspouts carry the water 8 feet away from your foundation. These tips should be your first when fixing a wet basement. These tips will save you money and headaches by drying out leaky basements. Let's compare waterproofing costs and options.

    Looking for the best waterproofing company? Look no further! Hitch Property Constructions has you covered.


    Condensation occurs when humid air droplets hit cold surfaces, turning vapour into water. Walls and floors often collect condensation. Add a box fan to your basement to circulate the air and prevent the vapour from condensing into liquid. Add a dehumidifier to the basement to remove air moisture. Most basements should have relative humidity below 50%. Mold and mildew risk rises above 80% humidity.

    Leaky Wall Crack

    Poured wall foundations often have leaky cracks. Vertical wall cracks can be sealed with CRACK Foundation Repair. This seals the crack, preventing water from entering. Preventing water from entering your basement requires precautions. When it rains or snow thaws, water can enter your basement through key areas outside your home (read the preventative tips above for more info).

    Water Seepage Where Floor & Walls Meet

    Floor-to-wall joints are called "cold" or "cove" joints. This causes 90% of wet basements. As hydrostatic pressure builds around your home's foundation, water enters through the open cold joint.

    Many DIY homeowners try waterproofing paints or hydraulic cement to stop the seepage. These cheap "quick fixes" for a leaky basement won't last and often create a bigger problem as water builds up in the walls and finds new ways into the basement. Waterproofing paints cost $50 a gallon and require much prep work. Hydraulic cement costs $10 for a 10 lb. pail, which can be appealing to a homeowner looking for a cheap fix. However, they often regret their choice when water builds up in their walls and pops and cracks the hydraulic cement. These bandages won't solve the problem.

    Exterior waterproofing costs the most. When adding to an existing home, this requires a lot of work and stress. Exterior waterproofing uses a membrane sprayed or brushed on the foundation walls to create a water barrier. A waterproofing membrane should be applied during home construction. This prevents basement moisture.

    How to Fix Common Causes of Basement Water Problems

    Outside: Clogged Gutters and Downspouts

    A few inches of rain can produce thousands of gallons of runoff, according to the Department of Energy. Inadequate or clogged gutters and downspouts will direct runoff into your basement.

    This is the easiest and least expensive external cause of basement moisture to fix. Check your system when it's raining. Gutters should be large enough and graded properly to collect rainwater without overflowing. Downspouts should direct water away from the foundation or into a rain barrel for later use. Schedule yearly maintenance: Leaves and pollen are common clogs, and in northern climates, winter inspections prevent ice damage. Freezing water in gutters can damage roof shingles.

    Outside: Grade of Ground Around the Home

    Without a proper slope, rainwater can enter your basement.

    Energy.gov recommends using clay-based soil to create a gentle slope that starts at the foundation wall and drops 5% over 10 feet. If the existing ground is too close to siding or shingles, you may have to remove rather than add soil. Plan your landscaping to include rain gardens with native plants that absorb water, not high-maintenance non-natives.

    Outside: Water Table Rise and Seasonal Flooding

    Homes built in flood-prone areas or with a seasonal water table rise can have intermittent (and large) basement water problems. This is the most annoying cause of basement moisture because it's hard to diagnose and expensive to fix.

    This category of water problems is handled by a drain (or drains) and a sump pump, a small mechanical pump in a basement pit that pumps out water through a discharge pipe. The most important and efficient drainage system is outside and under the foundation. Suppose the home's exterior drain tiles are broken or missing. In that case, you may need to expose the area around your foundation, seal and insulate it, and install drain tile, pipes, and fill. Interior drain systems are cheaper because they don't require foundation excavation.

    Outside: Foundation Seepage

    Despite being sturdy, foundations are flexible. They breathe, settle, and respond. Because concrete is porous, it's vulnerable to capillary suction and vapour diffusion in dry areas. This type of moisture doesn't require a rowboat but can cause a damp basement and mold and mildew. Hairline and cosmetic cracks are common in foundation floors and walls, but some allow air and groundwater to seep into the basement or indicate a bigger problem. Location, size, and orientation matter.

    Seal the foundation if it's exposed for repair. Internal barriers can be a membrane or a liquid you paint on. A membrane barrier usually has an internal perimeter drain system to move water to a drain and then outside. If you're waterproofing your basement before finishing it, consider sealing because finished walls and floors have foundation requirements. Cracks Epoxy, concrete, or polyurethane foam can fix small cracks. Larger cracks may require foundation repair, stabilization, and reinforcement.

    Inside: Plumbing Leaks

    Leaks in the plumbing system caused by faucets and sinks are typically on our radar, but clogged or broken HVAC drain lines and improperly installed heating ducts are also major contributors to excess moisture in the basement, as are ducts for clothes dryers. These more recent offenders present a unique set of challenges because they are frequently concealed from public view.

    The solution is to perform routine inspections to look for obvious leaks in the plumbing and HVAC systems. Make sure that your dryer duct has not become disconnected within the wall, which is a problem that occurs in a surprisingly high percentage of homes, and that it has ductwork that is of the appropriate size and route.

    Inside: Regular Appliance Use

    Kitchen, bathroom, and laundry room appliances can cause condensation even without leaks. HVAC units — often installed in basements — can raise humidity if neglected or if you use an inappropriate fan setting.

    Add HVAC vents to the basement, use windows and ceiling fans, and make sure all bathrooms and kitchens have extractor fans. Dehumidifiers can be built into HVAC systems or purchased separately. Install humidity-triggered exhaust fans in walls or windows. Follow the manufacturer's maintenance and filter-changing schedules.

    We have a huge range of waterproofing services Melbourne at Hitch Property Constructions that offers stress-free services for any water problem you got!

    Before hiring a basement waterproofing contractor

    Before signing a contract, check these details:

    Make sure gutters are clear, downspouts are 20 to 30 feet from the foundation, and the property slopes away from it. Consider Basement Health Association contractors in addition to a trusted online site for consumer reviews. This organization offers certification and CE.

    Make sure the company you hire is licensed, insured, and bonded. Beware a contractor who keeps lowering the estimate. Waterproofing is often priced per linear foot. Get everything in writing, including price. Learn what the company's waterproofing warranty covers.

    Once you know how much basement waterproofing will cost, find a reputable contractor. Nobody likes to waste money.

    FAQs About Waterproofing Basement

    If there are not any immediate problems with the walls or floors, prevent future damage by applying one or two coats of basement sealer. It is also important to safeguard the basement by ensuring that water can't make its way into the home via the foundation.

    In fact you should have a good five to ten years without worrying about replacing the waterproofing system or conducting any type of major without necessitating these fixes. Of course it's important to always consider the exception to the rule – living in an area that's extremely rainy, or prone to excess flooding.

    Whether you plan on finishing your basement space or keeping it in its original state, it is important to apply a waterproof sealant to the concrete floor in order to lock out moisture. An epoxy-coated basement floor is one of the best ways to maintain and preserve your space.

    First, Why Seal Concrete? Water seeping through concrete floors in a basement or garage leaves your home susceptible to big problems. This water can affect the structural integrity of your home and be a catalyst for unhealthy mold and mildew growth.

    Unfortunately, water in the basement is extremely common. From seeping in through foundation walls to coming up through the floor, there are several ways for water to enter your basement.

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