Basement Waterproofing Signs

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Signs your
basement needs waterproofing

Unwanted water or moisture in your basement ruins everything it touches. A home with a wet basement is also one of the biggest red flags to prospective home buyers.


These are some signs that you need to stay alert for:

  • Basement floor cracks and leakage
  • Wet basement walls
  • Musty smells
  • Damp drywall and carpet
  • Rusty appliances or floor vents
  • Cove joint seepage
  • Efflorescence, yellow, orange, or black stains

Signs your
basement needs waterproofing

Unwanted water or moisture in your basement ruins everything it touches. A home with a wet basement is also one of the biggest red flags to prospective home buyers.


These are some signs that you need to stay alert for:

  • Basement floor cracks and leakage
  • Wet basement walls
  • Musty smells
  • Damp drywall and carpet
  • Rusty appliances or floor vents
  • Cove joint seepage
  • Efflorescence, yellow, orange, or black stains
Leaky Floor

Leaky Floor &
Wall Cracks

Settling can cause your basement floors to crack. Additionally, water can build up outside your foundation resulting in hydrostatic pressure, pushing against foundation walls and forcing leaks into your basement.

When water comes up through the floor or basement walls you need to address it. Installing a perimeter drain system and drainage channel, and sump pump will help direct any water that comes through the cracks and away from your valuables.  

Stains

The white chalky powder on your basement walls, also known as efflorescence, is a common sign of moisture in your basement. Usually accompanied by yellow, orange, and/or black stains, moisture is a problem that if not addressed, can make your foundation walls crack and even cause your basement to present leaks.

Even after waterproofing your basement, concrete walls and floors continually absorb moisture from the soil and release it into the air. A reliable, low-maintenance dehumidifier system will ensure your basement and home will stay dry.

tf stains image Waterproofing
Poor Air Quality

Basement Air Quality

Most indoor air quality issues start in dark, wet areas of the house, like the basement or crawl space. Mold thrives in this kind of environment and will commonly be accompanied by a nasty smell. In addition to mold, excess moisture can lead to wood rot, attracting pests like termites and rodents that further compromise your basement air quality. High humidity levels can also exacerbate allergies and respiratory issues, especially for those with asthma. Addressing basement air quality problems not only improves air quality but also creates a healthier living environment for your family.

After removing any organic materials (mold) and making sure your waterproofing system is working correctly, you should still consider other airborne hazards, such as dust mites and bacteria. These can also affect your basement air quality and potentially endanger your health. Fortunately, you can prevent them with the use of a dehumidifier.

Before and After

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TERRAFIRMA IN ACTION

Leaky basement? Moldy odors? You’re not alone. We’ve helped families across Oregon & Washington breathe easier with our Basement Waterproofing Systems. Check out some tips and examples of our waterproofing work here.

Basements WATERPROOFED,
HOMEOWNERS HAPPY

We take pride in our years of experience making homes dry, safe, and stable. From Ashland to Corvallis, Beaverton to Olympia, our Basement Waterproofing clients have given us great feedback.

We had our crawl space waterproofed with a sump pump installed by TerraFirma. Our experience with this company was excellent. Sammy was our coordinator and kept us advised throughout the process in a very thorough and efficient way. Christian was the foreman in installation and Antonio and Jesse worked with him. They all were such hard working and super pleasant young men! They let us know what they were doing all the way through and cleaned up each day, leaving everything tidy. We are very satisfied with TerraFirma's work and recommend them highly!
This company was completely responsive to the situation I was having in my basement. They honored their warranty on their work!!!!! I have complete respect for a company that will honor their product, service, and their word. They were courteous, on time, very professional and attentive to the needs and concerns of their client. I highly recommend Terra Firma Foundation Systems, should you have a need for their service. Wonderful company. Wonderful people. Thank you for your service! Timari Davis
Appreciate our service tech Jon S. We had scheduled an annual service check up on our sump pump system. Jon was friendly, communicated well, arrived when he said he would, spent time asking and answering all my questions. Made recommendations for service and pump and took his time to do the job right. Once our old system was replaced he showed us the updates and let us watch him stress test the new system. While we have had multiple contacts/engagements with TerraFirma since we bought our house in 2018, we have been most impressed with Jon and his overall level of service and knowledge and look forward to another year of a water free basement....even in the worst storm conditions! Thank you!
This review is based on the customer service. We had a water intrusion problem in our finished basement after excessive rain just before Christmas. We called around and TerraFirma was one of the few places that could send someone within a week. Travis came by and gave us his honest opinion and suggestions without cost. Options included digging up the basement and adding a sump, or doing some simple exterior projects to keep water from draining toward the foundation. I appreciate Travis providing us options that did not require TerraFirma. While we ended doing the exterior work to keep water away from the foundation, we would recommend them for their great customer service. If we ever have need for foundation repair, we would not hesitate to call them in the future.
Repairing issues in our foundation was a huge project for us. Their staff were prompt, professional, respectful and friendly. We are very happy with their work and working within a narrow crawlspace is not easy! I would recommend this company for your foundation weatherproofing needs.
We chose TerraFirma to fix problems in our crawl space. We have a perimeter foundation with a post-and-pier system beneath the house. TerraFirma installed steel jacks where wooden posts had split. They also removed waterlogged tarps, soil, and insulation under our floor, then installed a waterproofing system that included a perimeter drain, two sump pumps, a dehumidifier, and a 120-mil encapsulation liner system. They also took care of all the coordination that was needed with an electrical contractor who had to come in and add circuits for the pumps (and do a few other things). The work took 6 long days of work by three TerraFirma crew members, each of whom were very diligent, communicated well, and did a good job cleaning up at the end of each day. (The team was Antonio who was the foreman, plus Jonathan and Riko.) I had lots of questions during the work that each of them answered well and to my satisfaction; they clearly were all very knowledgeable (not just the foreman). Also, the project manager (Jonah) did a great job addressing the many questions I had during the weeks before the crew showed up. This wasn't cheap work, but I felt we got good value and good service and now don't have to work around (and worry about) moisture and mold problems in the crawl space. We also had another crew from TerraFirma do some concrete leveling work, and I was really impressed at how well they addressed one particularly challenging slab that needed a major lift. I am a scientific consultant and in the client-service business, so I am pretty particular in my expectations of a contractor. TerraFirma met those expectations really well; I highly recommend this firm.
We were very pleased with the results of waterproofing our basement. James Taylor (foreman) and his crew (Byron Butler and Jonathon Heredia) did a great job! The communications and explanations that James provided were excellent, and the job even got done earlier than expected.
We called TerraFirma with a pretty significant problem. We had just purchased a home and were a bit misled on a couple of items. The basement and crawlspace were mold infested (which we did know). What we did not know was that at times of the year, there would be some standing water in the crawlspace. We also didn't know that the drain from the sump pump was actually underwater (adjacent lake), nor did we know the pool backflushed into that same line and actually would enter the crawlspace whenever that process occured. The crawlspace was unvented and unconditioned....the perfect storm of BAD! Our goal was to first remediate the mold and then resolve the issues that allowed the mold to grow in the first place. Enter Terra Firma. Tulane and Terra Firma stood head and shoulders above every other company I spoke with. It wasn't jus that they were going to fix it- we literally walked through every step and every product-I knew what I was buying before we started. The crew was professional, on time and did exactly what they said they would do and in the time frame promised. With Terra Firma, we waterproofed and encapsulated our crawlspace, we insulated the crawlspace, we installed new sub floor drainage with new sump pumps with battery backup to lower the water table under the house (that now drains above the high water line), we installed new structural floor posts where others had rotted, we installed a bypass for the pool overflow and we installed dehumidification and we are in the process of now conditioning the space. Terra Firma led the way and did an excellent job both on the communication and on the installation (at the price originally quoted!). I would highly recommend this firm for anyone with complex and challenging crawlspace issues. Great work and fantastic team from start to finish! Bruce McKee
Our 121 yr old home’s 1930 add-on had visible water damage that eroded the concrete foundation in one corner of our home. Upon initial inspection, the plan was to support that corner, replace some posts in the basement, and repair some pony wall framing. I got a couple of other bids and found TFFS to not only be comparable, but to also provide the security of a larger company’s resources. The day work was to begin, the crew realized our home’s situation was more complicated than initially realized. They brought in a specialist to assess the work needed and created a game plan, coordinating w a plumber and fitting us into their very busy schedule. They were able to do the work needed for our home without massive increases to our initial bid, and our floors no longer bounce and slope. Their crew communicated thoroughly throughout the entire process and cleaned up after themselves. The crawl space was leveled and plastic sheeting was in place. The only reason I’m giving this a 4star is because our initial project coordinator let us fall through the cracks when she took an extended leave of absence. However, they responded to my follow up inquiry professionally, promptly, and worked really hard to get our old home in the schedule. We feel much more secure about the health of our home and 100% recommend them.
I contracted Terrafirma to waterproof the crawlspace of our 1940s home. Jorge (the foreman), Jose and Fernando came out and did an excellent job. They had the work done in about a week and half and removed over 20 cu.yd. of dirt from underneath the house. Jorge gave us updates at the end of each day and let us know of their progress and the work yet to be done. His crew was friendly and professional and anyone to get them on their job will not be disappointed. After first receiving a quote from one of their competitors only to have them raise the price $10k just before the work began I went back to my second quote with Terrafirma and asked for a few changes, like the addition of a sump pump. Terrafirma not only delivered but in the end came in under their competitors original quote. They delivered where the competition could not and I will recommend them to friends, family and anyone looking for crawlspace/waterproofing work. Thank you Terrafirma!
Brought the TerraFirma folks in to waterproof the basement. Incredible job and service. Very professional crew (Antonio, Felipe, and Orion) who worked hard and explained every detail. The scope of the project changed slightly and the explanation was informative and made sense. Highly recommend.
Jorge and his colleagues Juan and Manuel did a really great job installing a sump pump and basement perimeter water collection system in our NE Portland home. As ours is a 99-year old home, they took great care to avoid damaging any “vintage” plumbing, and the result is a significant protection against water damage. Hard working, friendly guys, and I would highly recommend them!

Basement Waterproofing Homeowner Questions


Should I be concerned about damp spots on my basement carpet? What should I do?

If you have wet carpet in your basement or damp spots on the floor or baseboards, this could be a sign that you have a leaky basement issue. Wet basements create more problems than just wet carpet. Mold or mildew could be growing under the carpet, which fills the air you breathe with musty odors and hazardous mold spores.

The first step in fixing your leaky basement is finding the source of the water intrusion. Save yourself the hassle. One of our basement waterproofing experts will inspect your basement for waterproofing problems and recommend the best solution for your home.

Why should I trust your methods to waterproof basements?

TerraFirma is more than just your local waterproofing contractor. We are proud to be part of The Basement Systems® International Network, which comprises more than 300 elite basement waterproofing and crawl space repair contractor companies all across the United States and Canada.

As a member of the Basement Systems® International Network, TerraFirma is able to provide our customers with industry-leading products and warranties, while remaining committed to personalized service and custom solutions.

My basement has flooded in the past. What can I do to prevent this?

Basements can flood from a number of areas, including: floor cracks, leaking or burst pipes, leaking windows, hatchway doors, sump pump failure, and water heater failure. Our local experts will help you understand and address the cause of your basement flooding.

How should I handle a wet, leaky basement?

  • Avoid any electrical hazards – Avoid touching any devices or wires
  • If possible, pump out any standing water
  • Dry out and discard any wet non-essential organic materials such as wood
  • Find the cause of leaking and flooding. Our local experts will help you find the causes and provide you with a tailored solution to your basement.

What are footing drains?

Footing drains are installed just outside the foundation of your home’s basement. These are thick pipes with holes designed to let water flow inside. A layer of stones is put on top of the drainpipe to prevent soil backfill from blocking the pipe. However, with time, backfill can seep through the stones and clog the pipe. Improperly maintained footing drains can lead to a leaky basement.