POOR AIR QUALITY

Humidity and condensation in a crawl space are a recipe for disaster. Excess moisture leads to mold growth, wood rot, and foul odors, causing issues for your home’s health, air quality, and value.

After removing any organic materials, making sure your waterproofing system is working correctly, and installing vent covers, you should still consider other airborne hazards that, fortunately, can be prevented with the use of a dehumidifier.

Encapsulation and consistent maintenance don’t just protect against crawl space moisture problems—they also retain a stable temperature in this area, improving indoor air quality and reducing allergens. Over time, this can prevent costly repairs caused by worsening structural problems or degradation. Additionally, a well-encapsulated crawl space boosts your home’s resale value; ultimately, it is a wise investment for homeowners intending to stay or sell. So have Terra Firma fix your crawl space problems today to start reaping the benefits.

dehumidifiers titlesection 4 1 poor air

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Crawl Space Evaluation

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Crawl Space Evaluation

TERRAFIRMA IN ACTION

TerraFirma can repair your crawl space, leaving your home with cleaner, healthier air. Read on about our crawl space work and tips below.

crawl spaces
repaired

Don’t take our word for it – see what our clients have to say.
From Roseburg to Eugene, Portland to Seattle, our Crawl Space Repair work speaks for itself

We had an excellent installation on a fantastic crawl space waterproofing job. We are on the northern Oregon coast and a few feet from the sand so we get a lot of moisture under our 1940s home. We decided to invest in the TerraFirma product after a great meeting last summer with Don as we were taking on a major house renovation and decided we would do what is best all at once. We are very happy we did as the product is a game changer for the health of our home and our next generation. We pick up some great additional waterproofed storage space too in the end.

The install process was efficient, and we had three outstanding guys working our job. Antonio, Jesse and Cameron deserve a big shout out. They spent time each day we dropped by to educate us on what they did that day, show us every aspect of the job and took great care to be hospital-like clean. Sometimes not-so -ice people do very good work, and sometimes really nice people do shabby work but in our case with TerraFirma, we received an excellent service from very nice guys. So glad we found Terra Firma!
We had concerns about the foundation and flooring of the home due to water and moisture in the crawl space. Walt, out of the Roseburg office was very responsive and timely with accurate information for our situation. Ultimately, we decided on crawl space encapsulation. The bid was easy to read and laid out a comprehensive work plan for our home. They were also able to meet our scheduling needs for the timeline of our project.
Elijah did a fantastic job breaking down everything going on in my crawlspace and providing the estimates to get the repairs.
Mr. Stanford did a thorough inspection of our crawlspace and gave us the honest opinion that very little needed to be addressed. He was very professional and clearly very experienced. This was after a competitor came out and tried to convince us we needed an $18,000 encapsulation.
I had Bailey come out to do an estimate for crawlspace encapsulation and some drainage work in the basement. Bailey spent 2 hours at the house and on the phone with me in total (not counting the work he did on his own), doing a very thorough work up of the house and patiently explaining what my options were, and what might be better for my renovation contractor to do. I really appreciated Bailey's willingness to think through different options - some that didn't include work for his company - and teach me about crawlspaces!
I don’t usually do reviews but in this case people should know this is a first class company. Great communications and no selling you on something you don’t need. John was very professional, he spent time with us expanding what issues he did find, measured the level of the floors, inspected under the house and checked wall and foundation cracks. He also placed a blanket down to collect any dirt from entering and exiting the crawl space inside the house. I highly recommend John from the Eugene office and TerraFirma.
We had a complete encapsulation of our crawl space and sump pump and humidifier system installed. The young men who did the work were very professional. Antonio was the project manager and he was fantastic. Answered questions, explained the process, and made sure we were ok with what they were doing. They showed up at the time designated and called if they would be late. Communication was very good. Shout out to his helpers, Daniel, Jesse, and Kameron. At the end of the project they cleaned up the workspace and made sure things were left like it was before project. Thanks guys.
We contracted with TerraFirma to ecapsulate
And add sump pumps and a dehumidifier to our recently severely flooded crawl space in Eugene, Or.
We got a couple of bids and TerraFirma seemed most representative of what we required.
Andrew lead a team that competed the job one day earlier than required, was super professional and managed the effort very efficiently. He was supported by professional program coordination staff as well.
He always kept us informed of status and also worked with the electricians to ensure we had proper outlet support for the pumps assemblies and dehumidifier.
He also ensured that the Ship Shape application used for monitoring the associated hardware was installed and operating before finishing the job.

I highly recommend TerraFirma for this kind of support and have already written an assessment of the evaluation and bidding process led by Tyler Landon.
2/16/26 update: My sump pump broke in December due to the high level of iron in the soil under my house. Terra Firma responded quickly and replaced the pump with no issue. Great customer service and a great team / experience! Thank you Terra Firma!

Seth has been amazing to work with! I have been working with Seth on designing my crawlspace drainage system. Seth has been extremely helpful, patient, and professional. I've pestered him every day, multiple times a day with questions, asked for revisions to my quote, clarifications, and have been an all-around pest. Through it all, Seth has been responsive, communicative, and thorough. The work is scheduled for Mid-May 2024. I will update my review after the work is done with how it went with the crew and the job they did.
Excellent work on transforming crawl space. The experience with Terra Firma was outstanding from our first meeting with the technical specialist Andrew Fry through the completion of the project. The work crew was courteous and professional and did a fine job. Thank you Terra Firma!

Award Winning
Results Begin Here.

bbb Terrafirma Award 2 poor air
HA elite Terrafirma Awar Banner 2 poor air

Crawl Space
Homeowner FAQs

Crawl space insulation vs encapsulation – which is better?

My concrete seems to have moved up during the winter months, is this a problem?

What causes a floor joist to sag?

Can you repair cracked concrete after going through concrete leveling?

My concrete seems to have settled over the winter. What should I do?