TerraFirma Foundation Systems

Gaston, OR

Foundation, Crawlspace & Concrete Contractors in Gaston, OR

Terrafirma in Gaston, OR

At TerraFirma, we’re dedicated to safeguarding and improving the structural integrity of homes in Gaston and throughout Oregon and Washington. For years, we’ve been helping homeowners in this community tackle the unique climate and soil challenges that come with living here.

From a cracking foundation and musty basement to a damp crawl space or uneven concrete slab, TerraFirma has the expertise, tools, and reliable solutions to restore your home in Gaston and ensure its safety for years to come.

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Gaston’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 Gaston

    Foundation issues can lead to significant damage to your home if not taken care of promptly. Signs like cracks in the floor, bowing walls, and sagging floors may indicate more serious structural problems. Homeowners in Gaston, OR, might experience doors that stick, windows that are hard to close, or visible gaps between walls and ceilings. These symptoms can all point to foundation shifts caused by soil movement, water damage, or the natural wear and tear of age.

    At TerraFirma, we provide expert foundation repair services in Gaston, offering targeted solutions based on the specific issues affecting your foundation. We start with a thorough inspection to identify the root cause and the extent of the problem. From there, we recommend one or more of our tried-and-true foundation repair systems tailored to meet your needs:

    Foundation piers

    Our push and helical piers are designed to stabilize and lift your foundation by distributing its weight to deeper, more stable soil. Helical piers work best in known soil conditions, while push piers are great for areas with questionable soil stability. Both methods are minimally invasive and provide long-lasting solutions for your home in Gaston, OR.

    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, ongoing maintenance options, and transferable warranties, ensuring you have confidence and peace of mind in your home in Gaston.

    Basement Waterproofing Gaston

    Dealing with a damp basement in Gaston? It can cause mold, mildew, structural issues, and poor air quality in your home. You might notice musty smells, stained walls, pooling water, or that white, powdery residue from evaporating water. Remember, even a tiny crack in your basement wall can become a major gateway for moisture.

    TerraFirma provides top-notch basement waterproofing solutions in Gaston to ensure your space stays dry, healthy, and functional—regardless of the weather.

    We design and install custom drainage systems that effectively redirect water away from your basement and into sump pumps, safeguarding your foundation here in Gaston, OR.

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

    Crawl Space Repair Gaston

    Crawl spaces might get forgotten about, but they play an important role in your home’s structure and air quality here in Gaston, OR. If you ignore them, you could end up with problems like mold, pests, and standing water. These issues can cause wood rot, unpleasant odors, and even respiratory problems for those living in your home.

    We’re familiar with the crawl space conditions in Gaston, OR, and TerraFirma’s repair services are tailored to tackle moisture, mold, pests, and sagging floors with comprehensive encapsulation, drainage solutions, 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 Gaston 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 Gaston

    Damaged, cracked, or uneven concrete can be more than just an eyesore—it poses a safety risk too. These issues often arise from factors like poor soil compaction, freeze-thaw cycles, erosion, or tree root growth. That’s why homeowners in Gaston trust us to swiftly and effectively repair their concrete slabs, sidewalks, patios, and driveways.

    TerraFirma provides quick, reliable, and durable concrete leveling and repair solutions right here in Gaston, OR, using cutting-edge polyurethane foam injection and effective crack sealing.

    PolyLevel® Concrete Lifting

    PolyLevel uses expanding polyurethane foam to lift and stabilize concrete slabs, offering a non-invasive solution that’s perfect for residents of Gaston, 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 Gaston, OR for industrial buildings, warehouse floors, roads, runways, and rail lines—using the same high-quality systems we trust for residential properties.

    Earthquake Retrofitting Gaston, OR

    Gaston, OR, is situated in an active seismic zone, making it important for homeowners to be aware of the risks. Homes built before the updated building codes of the 1990s may be particularly susceptible. Even a small earthquake can cause significant damage, potentially shifting a home off its foundation or compromising its structure.

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

    Retrofitting your home for earthquakes in Gaston not only helps protect your property but can also lower your insurance premiums and deductibles, and may even make you eligible for coverage options that weren’t available before the upgrade.

    How We Retrofit

    Assessment & Planning

    In Gaston, OR, our 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 suggest the best solutions.

    This evaluation involves a thorough inspection of the foundation, walls, roof, and overall structure. After that, our engineer will create a detailed retrofitting plan based on what we discover.

    Foundation Bolting

    Strengthening the foundation is the next step in our process. Our skilled technicians install anchor bolts that connect your home to its foundation, helping to prevent any shifting during an earthquake.

    In this process, we drill holes into the foundation and insert sturdy steel bolts. Our team then tightens these bolts to reinforce the structure, improving its stability and resistance to seismic activity.

    Adding Shear Walls

    Shear walls play an essential role in earthquake retrofitting, helping to distribute seismic forces and keep buildings in Gaston from collapsing.

    Shear walls are typically made from plywood or other sturdy materials, and our skilled workers install them in key areas of your home, especially in cripple walls. These walls enhance support and stability, helping to minimize the risk of damage during an earthquake.

    Bracing & Reinforcing

    In the next phase, we focus on strengthening essential areas of your home in Gaston with durable steel braces and straps. Our team carefully installs these on key structural components like the roof, walls, and floors. This vital step enhances your home’s stability, providing a strong framework designed to withstand seismic forces.

    Securing Applicances

    By securing your appliances, you can create a safer living space for everyone in Gaston. It’s important to anchor items like water heaters and refrigerators, and our technicians will also install protective measures for gas meters to 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 Gaston Home Today

    At TerraFirma, we’ve spent over 20 years helping homeowners in Gaston 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 Gaston, OR is unique—but TerraFirma has the right solution for every challenge. 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.

    Gaston
    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.

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    Catherine R.
    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...
    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.
    Andrew, Zach, and Brent arrived and completed the job on time. They worked with our old house’s existing flooring.
    yelp avatar Gaston
    Catherine R.
    The crew of Luis J., Jose V., and Jorge D. Did an excellent job on my crawl space encapsulation. There was a lot of work to the preparation and this great...
    Jaden was prompt, professional and courteous. I would recommend him to anyone who requires his services.
    Jaden came out and reassured us that our foundation was good but our garage floor is settling.
    We look forward to working with Jaden and Terrafirma in early summer to fix the problem.(Too difficult to move everything off garage floor this time of year)
    Thanks again Jaden for your professionalism.
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    Andrew S.
    I'd been putting off fixing our sunken garage for a few years. With the flooding seasons getting more and more distinct, it was time. i called a few...
    Excellent work - perfectly even walk now!
    Last year our house flooded due to rising ground water in a daylight basement that we had assumed was sealed and waterproof. Well it wasn't! We hired Terra Firma to do a waterproofing job that included drain lines below ground, drain track around the inside corners, and a sump pump. Our install team (Andrew, Zach, Joey, and Kayden) were amazing. They arrived on time every morning, worked hard all through the day, and were done ahead of schedule. They answered all of our questions and even helped us plan the best way to resurface our finished basement floor so any future water damage would not create long term damage. We could not be happier with Terra Firma and our amazing install crew. Five stars for sure.
    yelp avatar Gaston
    Linda R.
    I am very pleased with Terra Firma! I have gotten a quote and I'm pleased with what they quoted me. They were on time and very professional.
    Once the job is...

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