How much does it cost to re waterproof a basement?

Author: Prof. Jayden Witting  |  Last update: Saturday, January 31, 2026

Basement waterproofing costs $5,213 on average, and most homeowners pay somewhere between $2,459 and $8,181 depending on the waterproofing method, the extent of the issue, and the size of the home.

Is it expensive to waterproof a basement?

Waterproofing is something a professional contractor can do for you, and leaves your basement in a very usable condition. You can expect to spend around $5,000 for a foundation waterproofing job, although that price may vary. Sometimes, the fix is relatively easy, and you could end up spending much less.

Is waterproofing a basement worth it?

According to some water damage studies, over 98% of all homes with basements will experience some kind of water damage. Even a minor leak will raise your water bill by 10%. A properly waterproofed basement can be a great selling point for potential buyers and typically offers a return on investment of about 30%.

Can you waterproof an existing basement?

Yes, waterproofing a basement is worth it. Basement waterproofing helps protect your home's structural integrity and, thus, its resale value. It can also prevent mold growth, water damage, and foundation issues—all of which can be expensive to fix.

What is the cheapest method of waterproofing?

The cement-based coating gives it a rigid layer and is most effective for homes with stable temperatures and simple roof layouts. This approach is one of the most economical options available as it helps you reduce repairs, replacements, and maintenance costs for years to come.

Average Cost to Waterproof a Basement You Must Know

How to waterproof a basement on a budget?

The cheapest basement waterproofing method is typically applying a waterproof paint coating, which can cost as little as a few dollars per square foot for materials if doing it yourself.

Can I do waterproofing myself?

If you do your own waterproofing, it needs to be done to the Standard and must be able to pass muster with a building inspector. You'll also need to consider the fact that it may impact on any insurance or warranty claims further down the track.

Does homeowners insurance cover basement waterproofing?

Although basement waterproofing isn't directly covered by insurance, it is possible to add an endorsement to your homeowner's insurance policy covering your things like a broken sump pump, burst pipes, or extreme weather events like a lightning strike.

Is waterproofing expensive?

In general, expect to pay between $500 and $750 to completely waterproof an average sized bathroom. If the waterproofing is done in more than one bathroom or as part of a complete bathroom renovation, the cost may be lower.

How long should basement waterproofing last?

Generally, waterproofing lasts 5-10 years but can extend to decades with proper maintenance. To ensure longevity: Regularly inspect and maintain the system. Discuss specific longevity expectations with your contractor.

How do professionals waterproof a basement?

Waterproof basements are protected against water damage, mold growth and damage to the foundation of the home. Professional waterproofing methods typically involve excavation, drain installation and sealants.

What are the disadvantages of basement waterproofing?

Exterior basement waterproofing has a few downsides, though.
  • Cost. It's a more involved process that requires digging up your yard, which is expensive and time-consuming.
  • Damages landscaping or hardscaping elements. ...
  • Not serviceable.

Can I finish my basement without waterproofing?

Simply put, not waterproofing a basement before finishing it can lead to serious problems. These can include structural damage and health risks, resulting in more costs and time. It's vital to prioritize good waterproofing methods before finishing your basement.

Is it better to waterproof basement from inside or outside?

The exterior waterproofing process includes excavation of soil surrounding your home and repairing the leaks using a powerful sealant. Interior basement waterproofing systems are considered better and more effective in preventing wet basements. The interior weeping tile system can waterproof your basement.

How to fix a leaky basement?

What to do if your basement is leaking
  1. Check gutter and downspouts. Clogged gutters and downspouts can cause water to overflow, pool around your foundation walls, and enter your home. ...
  2. Seal cracks in the foundation. ...
  3. Fix grading issues. ...
  4. Clean window wells. ...
  5. Contact a basement waterproofing expert.

How much should I pay for basement waterproofing?

The cost to waterproof a basement falls between $3 and $10 per square foot on average, although where in this range your pricing falls depends largely on the type of waterproofing method you choose. In any case, large spaces require more time, labor, and material to waterproof than small spaces.

How many years does waterproofing last?

Quality waterproofing systems should last for at least 10 years and sometimes they can last much longer given the right circumstances. However, this is largely dependent on many factors including: The type of waterproofing materials used.

Does a tiler do waterproofing?

It is a highly skilled trade that takes years to perfect, so it's important to find an experienced and reputed professional to do the job. Tilers often complete the waterproofing for the project if they are licensed; however, if not, you'll need to find a dedicated waterproofing company.

Is basement waterproofing tax deductible?

In most cases, no. Basement waterproofing is considered a home repair, and thus isn't eligible for any kind of tax deduction when it's done to fix a leak or a crack.

Why is basement waterproofing so expensive?

What Factors Affect Basement Waterproofing Costs? The total project cost depends on your home's location, the size of your basement, and how you waterproof it. Basement size: The larger your basement, the more materials and labor are needed for waterproofing.

Does FEMA cover basement flooding?

A flood sign during a storm in Whittier, California, on Feb. 6, 2024. Basement coverage "is limited" through NFIP policies, FEMA said. The agency defines a "basement" as any area of a building with a floor below ground level on all sides.

Can you waterproof over old waterproofing?

Can You Waterproof Over Old Waterproofing? While it technically is possible to waterproof over existing waterproofing, it is not something we would recommend. Alternatively, we recommend you invest in remedial waterproofing such as that we offer at Remedial Property Solutions.

Does waterproofing increase home value?

Waterproofing your basement can increase/ recover the resale value of your home by up to 10-20%. This is because it makes your property more attractive to potential buyers and reduces the likelihood of future repair costs.

What is the easiest waterproofing method?

Cementitious Waterproofing – Cementitious waterproofing products are considered as the easiest waterproofing materials to use. These are readily available from suppliers of masonry products like MCT UAE, and they're easy to mix and apply.

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