Search thousands of topics on CostHelper.com

BROWSE ALL TOPICS >> appliances babies & children  cars  consumer electronics health & personal care home & garden personal finance  pets  schools small business weddings
CostHelper > Home and Garden  > Plumbing & Waterproofing > Basement Waterproofing

Basement Waterproofing Cost


How Much Does Basement Waterproofing Cost?

 
low costLow: Dehumidifier $150-$400average costMedium: Sump Pump $100-$6,000high costHigh: With Excavation $5,000-$15,000+
post E-mail post Post   Comments (2)

Water flows down, which means basements are a prime spot for rain- and snowmelt-related dampness or flooding, and for moisture seepage (through solid masonry or through cracks caused by the house settling). Methods for basement waterproofing range from relatively inexpensive steps which improve drainage, to more extensive projects that could include excavation work. State Farm Insurance describes potential sources[1] of wet basement problems.

Typical costs:

  • Approximately five yards of soil to make the ground slope away from your home runs $40-$150 depending on location and quality of soil. Hiring someone to do this can be another $50-$150 or more depending on what's involved in the project.
  • If you don't have rain gutters on your home, install them. If you have gutters, extend the downspouts. Simple above-ground extensions of 3-25 feet are $10-$50 each. Extending downspouts into underground drainage pipes or a drywell can cost $100-$400 for do-it-yourself materials and $200-$2,000 or more with professional installation.
  • For dampness caused by condensation, a dehumidifier for a typical basement can run $150-$400 but averages $200-$300. Large-capacity, low-maintenance dehumidifiers for extremely damp or large basements start around $800-$1,200.
  • Installing a sump pump runs$100 -$300 for do-it-yourself installation in a typical family home, or $250-$600 for both parts and labor to have a plumber or waterproofing contractor install it for you. Having a contractor install a complete sump system with perimeter drains (also called French drains) that route water to the sump basin averages $2,000-$6,000, but can go as high as $10,000-$15,000.
  • Do-it-yourself costs for repairing and sealing a basement can run $100-$200, which includes painting or spraying the interior basement walls (and/or floor) with a sealant. In extreme cases you might excavate outside a problem basement wall, apply sealer and a moisture barrier to the exterior wall, install exterior footer drains and then backfill the excavated area -- do-it-yourself materials and tools could run $200-$500 or more. Hiring someone to repair and seal your basement interior can run $250-$1,000 or more; if the project also includes outside excavation plus installing a waterproof barrier and footer drains, the total cost starts around $5,000-$10,000, but can run $11,000-$15,000 or more.
Related articles: Bathroom Remodeling, Repairing and Sealing a Basement, Sump Pump, Dehumidifier, Mold Inspection, Mold Remediation

What should be included:
  • Most homes in damp areas are built with some form of basement waterproofing (such as gravel around the foundation to improve drainage) but these may be inadequate or start to fail over the years as the house shifts and settles. A wet or damp basement might be caused by condensation, seepage, leaks or subterranean water. Tape a piece of aluminum foil on a basement wall; wait 24 hours and then check it. Water on the outside of the foil (toward the room) indicates condensation is the problem; water on the inside of the foil (against the wall) indicates seepage. Or lay plastic sheeting on the basement floor for two days; moisture dampening the concrete underneath indicates subterranean water. Better Homes & Gardens provides an overview[2] of symptoms, causes and solutions for typical basement water problems.
  • Most experts recommend improving outside drainage first, to direct water away from your home's foundation and basement. ThisOldHouse.com gives an overview[3] of possible methods for drying out a wet basement.
Additional costs:
  • If you're not sure exactly what needs to be done, you might hire a home inspector who specializes in water problems to make a complete analysis and give specific recommendations. This could run about $150-$250 or more.
Shopping for basement waterproofing:
  • Get estimates from several companies. Be sure you understand exactly how their solution will solve your specific basement water problems. The final written contract should include an evaluation of the problem and how it will be fixed; start and completion dates; a guarantee/warranty; and a clause that there will be no additional work down without your approval and signature. Ask for and check references, and look for any complaints on file with the Better Business Bureau[4] . The BBB warns against[5] waterproofing contractors who ask for large payments in advance or don't provide a written estimate.
  • The National Association of Waterproofing and Structural Repair Contractors lists things to do before[6] calling a contractor, a checklist[7] for hiring a waterproofing contractor and referrals[8] to its members.
post E-mail post Post   Comments (2)
CostHelper News


7 Ways to Stretch Your Reduced Food Budget
End of the year budgets are tight for everyone, especially in this economy.It's especially hard for the millions of Americans who depend on government programs like food stamps to help make ends meet. || Posted November 11 2013


7 Lesser-Known Discounts for the 50+ Crowd
As they age, members of the Baby Boomer generation don't like to admit that they're senior citizens, but they love getting discounts. It's kind of a quandary, because some of the best deals available are reduced prices for older folks. || Posted October 21 2013

‣ All CostHelper Blog Posts


What People Are Paying - Recent Comments
Coating Basement Walls With Waterproof Coating
Amount: $580.00
Posted by: a user in Providence, RI.Posted: March 12th, 2018 07:03AM
Sq. Ft. of Basement: 750Waterproofing Method: Seal with epoxy waterproof coating
Contractor: DIY
We applied a water based epoxy coating Hydro-Seal 75 to our basement walls and came out 1 foot on the floor in our basement, 750 square feet total for $580, 58$ per gallon. This took us about 10 gallons to apply 2 coats over walls and 1 foot on the floor. We also repaired all cracks and filled holes with Hydro-Seal 75 mortar that we made by adding concrete sand mix to the Hydro-Seal 75.
Job was a complete success stopping seepage, and covering damp dark stained concrete walls with a beautiful Gray colored coating.
I also bought brushes, rollers, mixing bucket, TSP for prep and plastic putty knifes for patching. No other special tolls were required.
Was this post helpful to you?   yes     no Report prohibited or spam
Basement waterproofing
Amount: $2,725.00
Posted by: Defcon1 in Raleigh, NC.Posted: March 19th, 2014 05:03AM
Sq. Ft. of Basement: 85 lin.ftWaterproofing Method: internal french drain
Contractor: Shamrock
Nice work during a rainy period. So far, dry as a bone! Dimpled plastic against wall and four inch pefrorated drain tile to a perforated sump liner at least two feet deep. The real test will be a tropical storm.
Was this post helpful to you?   yes     no Report prohibited or spam


 

Comment On Your Experience With Basement Waterproofing
 
Subject:  *
Amount Spent:  *
Sq. Ft. of Basement: Waterproofing Method: 
Contractor:   
Comments: 
Purchased:  Year: 
City:  * State:  *
 
Information about you:
Email:  * Email addresses are not displayed.
Name:  This is the name we'll display with your post.
me on this computer
*=required field.
 



External Resources:
  1.  learningcenter.statefarm.com/residence/maintenance/wet-basement-problems/
  2.  www.bhg.com/home-improvement/maintenance/construction-basics/solving-basement-water-pro...
  3.  www.thisoldhouse.com/toh/article/0,,220912,00.html
  4.  www.bbb.org/us/Consumer-Business-Reviews/
  5.  basementhealthpros.com/
  6.  basementhealthpros.com/
  7.  basementhealthpros.com/
  8.  basementhealthpros.com/
More Home and Garden Topics
Check Out All Costs for Home and Garden How Much Does Heating Oil Cost? How Much Does Painting a House Cost? How Much Does a Fence Cost?

Search Thousands of Topics on CostHelper.com

 
Today's Featured Cost Articles

About CostHelper
CostHelper is based in Silicon Valley and provides consumers with unbiased price information about thousands of goods and services. Our writers are experienced journalists who adhere to our strict editorial ethics policy.

CostHelper Community
Sinus Infections - Steroid shot and sent home
Paid: 2753.00
I woke up having breathing problems. I went to nearby non-hospital THH office. Nurse took blood pressure and temperature. Dr came in the room and spent less than 10 minutes and stated I had sinus infection... [more]
-Bill Moore
Emergency Room Visit Cost
Mold Testing Pacific Palisades, CA
Paid: 800.00
It cost us 800. We were pleased with Knight Environmental consulting who we hired. They were very thorough. Friendly and respectful of our home.They checked everywhere in our 7000ft home and tested the air... [more]
-AMY SCHWARTZ
Mold Inspection Cost
extraction
Paid: 739.00
Had 3 extractions yesterday. The cost was 304.00 each extraction but with some kind of insurance plan you could get 30% off. The plan was 75.00 annually and came at a huge savings on the work as my final cost with the plan was 814... [more]
-Dental mess
Tooth Extraction Cost
McHenry MD - Suburban Propane
Paid: 3300.00
Just got my bill and in 5 weeks we supposedly used 356 gals. Hard to do when you are not there the entire time and you turned the thermostat to 60. They charged $.35 more per gallon then from 5 weeks ago. $3.42 per gallon... [more]
-Check your bill with Suburban
Propane Tank Cost
Laceration from stick
Paid: 25.00
Slipped and fell on a stick while running around on a hill, and recieved 2 lacerations on my right leg, one about an inch long and one about 2 inches long. Called my insurance asap (Kaiser) and they directed me to one of their Urgent Cares... [more]
-
Stitches Cost
Urinalysis was asked of me
Paid: 3920.00
This was supposed to cost $250. Total!$3,675. for a urinalysis. Not mentioned anywhere on ANY search was this required to get a card... [more]
-Nellie28
Medical Marijuana Card Cost