TerraFirma Foundation Systems

Dundee, OR

Foundation, Crawlspace & Concrete Contractors in Dundee, OR

Terrafirma in Dundee, OR

At TerraFirma, we’re dedicated to safeguarding and improving the structural integrity of homes right here in Dundee, Oregon. For years, we’ve been helping local homeowners tackle the unique climate and soil challenges of our area with reliable repair services.

Whether you’re dealing with a solid foundation, a musty basement, a damp crawl space, or an uneven concrete slab, TerraFirma has the skills, tools, and reliable solutions to restore your home in Dundee and ensure it stays safe for years to come.

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Dundee’s TOP-RATED Foundation & Basement Contractors

Contact us at (866) 486-7196 or use the form to the right.

Hours: Monday – Friday, 8am-5pm

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    Foundation Repair Dundee

    Foundation issues can lead to significant damage to your home if not taken care of promptly. Signs like floor cracks, bowing walls, and sagging floors often indicate deeper structural problems. In Dundee, OR, homeowners may experience sticking doors, windows that won’t close properly, or noticeable gaps between walls and ceilings. These issues can suggest that the foundation is shifting due to soil movement, water damage, or wear and tear over time.

    At TerraFirma, we provide expert foundation repair services in Dundee, OR, designed specifically for the unique challenges your home faces. We start with a thorough inspection to identify the root cause and severity of any foundation issues. From there, we’ll recommend one or more of our effective repair solutions tailored just for your needs:

    Foundation piers

    Our push and helical piers are designed to stabilize and lift your foundation by transferring its weight to deeper, more stable soil. In Dundee, Oregon, helical piers are great for known soil conditions, while push piers are ideal for areas with uncertain soil stability. Both options are minimally invasive and provide lasting solutions for your foundation needs.

    Wall Stabilization Systems

    For cracked, bowing, or leaning walls, we offer a suite of reinforcement products. These include:

    • CarbonArmor®: Made from fiber-reinforced polymers ten times stronger than steel.
    • PowerBrace®: Zinc-plated steel beams that can be tightened over time.
    • GeoLock® Anchors and Helical Tiebacks: These systems halt inward movement and gradually straighten walls over time.
    • EverBrace™: Designed for severely deteriorated walls, this system replaces and reinforces failing foundation walls with steel supports.

    We also offer grouted micropile tiebacks for difficult soil conditions, SmartJack® crawl space support posts for sagging floors, and vapor barriers to manage humidity and prevent further moisture damage.

    Every solution comes with expert installation, flexible maintenance options, and transferable warranties, ensuring you have confidence and peace of mind in your home here in Dundee.

    Basement Waterproofing Dundee

    Basements in Dundee, OR can be vulnerable to moisture, leading to issues like mold, mildew, structural damage, and poor air quality in your home. You might notice signs of water intrusion such as musty odors, stained walls, pooling water, or efflorescence—a chalky white residue left when water evaporates. Even a tiny crack in your basement wall can turn into a significant pathway for unwanted moisture.

    TerraFirma provides cutting-edge basement waterproofing solutions in Dundee, ensuring your space stays dry, healthy, and functional, no matter the weather conditions.

    We create tailored drainage systems that channel water away from your basement and into sump pumps, safeguarding your foundation in Dundee.

    WaterGuard®: Our most popular system, it’s installed below the floor slab and above the footing to prevent clogging.
    DryTrak®: Ideal for monolithic foundations where jackhammering is not feasible.
    FlowGuard®: A thin-floor drain system used in basements with thin concrete slabs.
    TrenchLock™ Inserts: Block ground air from entering while allowing water to drain.

    We offer several sump pump options tailored to your water exposure:

    TripleSafe™: Three-pump system for maximum protection, including battery backup for power outages.
    UltraSump®: High-capacity battery backup pump that activates when the main pump fails or power goes out.
    SuperSump®: A single-pump system for homes with minor water issues.

    VaporLoc Elite: A heavy-duty wall liner that stops moisture and mold while directing water into drainage systems.
    SaniDry Sedona & XP: Energy-efficient dehumidifiers that remove up to 109 pints of moisture daily, improving air quality and comfort.

    Our SunHouse™ Window Wells and WellDuct® Drains keep your basement bright, dry, and free from debris, while meeting egress codes for safety.

    Waterproofing in Dundee, OR not only safeguards your investment but also turns your basement into a safe, functional extension of your home.

    Crawl Space Repair Dundee

    Crawl spaces in Dundee are often forgotten, but they’re essential for your home’s structure and air quality. If left unattended, these areas can become a breeding ground for mold, pests, and standing water. This neglect can cause wood rot, unpleasant odors, and even respiratory problems for everyone living in the home.

    We understand the unique crawl space challenges in Dundee, OR, and TerraFirma’s repair services are tailored to tackle moisture, mold, pests, and sagging floors with effective solutions like full encapsulation, drainage, and structural support.

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    Encapsulation & Drainage

    We begin by sealing the crawl space with our VaporLoc Elite liner, a 120-mil thick waterproof barrier that blocks moisture, soil gases, and allergens. To ensure proper drainage:

    • We use drainage matting under the liner to guide water to your perimeter drain or sump pump.
    • Sump pumps remove water quickly and efficiently, even during heavy rain or high water table conditions.
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    Crawl Space Entry & Vent Solutions

    • EverLast™ Doors & Access Wells: Waterproof, durable entry systems that keep out pests and moisture.
    • Turtl™ Access Well: An attractive, lockable access solution in several colors.
    • Vent Covers: Sealing crawl space vents prevent outdoor air, moisture, and insects from entering.

    Crawlspace repair in Dundee is crucial to maintaining your home’s overall health and energy efficiency.

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    Structural Repairs

    To support sagging or weak floor joists, our SmartJack® Support Posts offer adjustable, galvanized steel columns that restore floor stability. These are fast to install and offer permanent results.

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    Dehumidifiers & Monitoring

    Install a SaniDry Sedona dehumidifier to maintain healthy humidity levels year-round. For added security, our ShipShape™ System offers 24/7 performance monitoring, proactive maintenance alerts, and remote control of your crawl space systems.

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    Concrete Repair Dundee

    Cracked, damaged, or uneven concrete isn’t just an eyesore—it can also be a safety risk. Issues like poor soil compaction, freeze-thaw cycles, erosion, or tree roots can lead to these problems. That’s why homeowners in Dundee trust us to repair their concrete slabs, sidewalks, patios, and driveways efficiently and effectively.

    TerraFirma provides quick, tidy, and durable concrete leveling and repair services right here in Dundee, OR, using cutting-edge polyurethane foam injection and crack sealing techniques.

    PolyLevel® Concrete Lifting

    PolyLevel uses expanding polyurethane foam to lift and stabilize concrete slabs—an effective and non-invasive solution perfect for the needs of Dundee, OR.

    • Sidewalks – Eliminates tripping hazards and restores smooth walkways.
    • Driveways – Prevents further cracking and improves curb appeal.
    • Patios, Porches, and Pool Decks – Ensures proper drainage and surface stability.

    NexusPro™ Crack & Joint Sealant

    To prevent water intrusion that can lead to further sinking, we apply NexusPro, a UV-resistant silicone-based joint sealant that:

    • Cures in just 60 minutes.
    • Withstands extreme weather and heavy use.
    • Includes color-matched sand for a clean, polished look.

    SealantPro™ Concrete Protection

    After sealing and lifting your concrete, SealantPro provides a long-term barrier against moisture, chemicals, and seasonal temperature changes. It penetrates deep into concrete to resist stains, flaking, and surface erosion.

    We also provide commercial concrete repair in Dundee, OR for industrial buildings, warehouse floors, roads, runways, and rail lines—using the same high-quality systems we trust for residential properties.

    Earthquake Retrofitting Dundee, OR

    Dundee, OR, is part of a region that sits in an active seismic zone. Homes constructed before the updated building codes from the 1990s may be particularly at risk. Even a small earthquake can lead to a home shifting off its foundation or suffering significant structural damage.

    TerraFirma’s earthquake retrofitting services help secure your Dundee home to its foundation and strengthen its ability to withstand seismic events.

    Getting your home retrofitted for earthquakes in Dundee not only enhances safety but can also lower your insurance premiums and deductibles, plus open up coverage options that weren’t available before the upgrade.

    How We Retrofit

    Assessment & Planning

    In Dundee, OR, the retrofitting process starts with a thorough assessment of your building’s current condition. A qualified professional, like a structural engineer or trained technician, will inspect your home to pinpoint any weaknesses and provide the right solutions for improvement.

    Our evaluation focuses on assessing the foundation, walls, roof, and overall structure of your property in Dundee. After the inspection, our engineer will create a detailed retrofitting plan tailored to our findings.

    Foundation Bolting

    Ensuring the foundation is the next important step here in Dundee. Our technicians will install anchor bolts to firmly secure your home to its foundation, helping to prevent any movement during an earthquake.

    Our process involves drilling into the foundation and installing steel bolts. Our team then tightens these bolts to reinforce the structure, boosting its stability and making it more resistant to seismic activity.

    Adding Shear Walls

    Shear walls play a vital role in earthquake retrofitting by helping to distribute seismic forces, ensuring that structures in Dundee, OR, stay standing during tremors.

    Shear walls are usually made from sturdy materials like plywood and are strategically installed in key areas of your home, especially in cripple walls. They add extra support and stability, helping to minimize the risk of damage during an earthquake right here in Dundee.

    Bracing & Reinforcing

    Next, we focus on strengthening key areas of your home in Dundee with durable steel braces and straps. Our team carefully installs these reinforcements on essential structural elements like the roof, walls, and floors. This step boosts your home’s overall stability, creating a resilient framework that can better withstand seismic activity.

    Securing Applicances

    Make your home in Dundee, OR safer by securing your appliances. It’s important to anchor items like water heaters and refrigerators. Our technicians can also install protective measures for gas meters to help reduce the risk of gas leaks.

    Reparing Foundations

    During retrofitting, technicians may notice substantial foundation damage that needs immediate repair. Adding crawl space support posts and foundation piers, and stabilizing the walls are some of the ways TerraFirma can reinforce your foundation.

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    Secure Your Dundee Home Today

    At TerraFirma, we’ve spent over 20 years helping homeowners in Dundee and across the Pacific Northwest protect their homes from the ground up. From foundation repair and basement waterproofing to crawl space encapsulation, concrete leveling, and earthquake retrofitting, our team delivers top-tier craftsmanship with trusted products, proven systems, and lasting warranties.

    Every home in Dundee, OR is unique, and at TerraFirma, we have a solution for every challenge you face. Reach out to us today for a free in-home estimate, and find out how we can help make your home safer, healthier, and more valuable for years to come.

    Dundee
    Homeowners
    Frequently Asked Questions

    How does rain put my home at risk ?

    What’s the best way to repair concrete?

    What types of cracks in my foundation or basement should I be concerned with?

    How to fix a leaking basement floor?

    Are you noticing damp drywall and carpet in your basement?

    Which vapor barrier is best for weeping walls?

    Can I turn my crawl space into storage?

    How to repair damaged concrete?

    What is that bad smell coming up from my drain?

    What is the difference between helical piers and push piers?

    How long does basement waterproofing last?


    Why is
    TerraFirma
    the Top Rated Foundation Expert in Oregon?

    From Portland to Beaverton, Salem to Lake Oswego, and all across the region, our experts consistently deliver durable, reliable foundation, basement, and crawlspace solutions. Check out these homeowner stories from your neighbors.

    These guys were great! Aris, Rom and Scotty showed up on time, cleaned up after themselves and communicated well during the project.
    Thanks to Jorge, Juan and Scott for job well done!
    This is our 2nd time to use Terra Firma and we can't recommend them highly enough. They had lifted our sunken front porch and driveway a few years ago. So,...
    Edit:
    Jan ‘26
    Unfortunately this sump pump did not solve the problem after all, as water again came in after several days of hard rain. To be fair, TF did not guarantee a solution. I still think it is a good company but sadly my problem persists.

    Previous review from Nov 25 -

    Terra Firma installed a sump pump in my home that has solved my water incursion issues. This had been a problem for months. I had several different companies and professionals out to evaluate and try to solve the problem, from plumbers to leak detection companies and a few more. Most scratched their heads and said "this is a mystery." Terra Firma came up with this solution and it is working. I wanted to wait until we had significant rain to write this review - and after the past few days of pretty good rain, and no water coming in - I feel confident that the problem was solved. They were helpful, considerate and creative. They didn't try to sell me more than was needed. I recommend Terra Firma.
    The foreman was very detailed oriented, gave good consideration to the job, and was very easy to work with. The work done was excellent and the crew left the work site in better condition than what they started with.
    Andrew and his crew were wonderful. They worked, without complaint during an intense rainstorm. They were polite, quick, and clean!
    I highly recommend them and their services!
    Thank you!
    After I bought a 115 year old house built partially into a hill near the top of Council Crest in Portland and discovered that the walls bled water when it rained, two walls were built into a hill and had endured the pressure of water and mud for a century, causing cracks and turning the foundation to crumbles, I called Terra Firma when an neighbor with an old house told me about her experience. Terra Firma has a great reputation. During the first meeting, Hannah walked the property and made a detailed proposal, explaining how Terra Firma would ensure that the walls do not cave in by shoring them up and anchoring them, supplemented with a vapor lock system to keep the water out of the house. NO MORE MUSTY SMELL, THANK YOU! Hannah explained the plan thoroughly, using her iPad to ensure that I understood. It could not get any better than this...I signed the paperwork immediately and contracted for the foundation repair and upgrade. This week, Geovany and his team spent four days working very hard and very smart to finish the project on time, and without any hitches. And they were working hard, very thoughgoing and steadfast.

    I am extraordinarily pleased with the work of the TerraFirma team, and how they did it. It is obvious by looking at the work that my basement walls are solid, secure, and dry.

    THANK YOU TerraFirma!
    Giovanni and his crew were very professional. They showed up on time both days and got the job done on schedule. Giovanni carefully reviewed with us the work to be done before starting. At the completion on the job he reviewed what they had done. Giovanni was great to work with. He was very personable and had excellent communication skills.
    The crew, led by Luis J., along with Jose V. and Jorge D.; that came to do the work on my crawl space was exceptional. The crew on time and very...
    These guys are great! Skyler explained the process and did a great job on a complicated floor. I would recommend them anytime.

    Schedule your free
    Foundation Evaluation

    Schedule your free
    Foundation Evaluation