Foundation, Crawlspace & Concrete Contractors in Wilsonville, OR
Terrafirma in Wilsonville, OR
“At TerraFirma, we’re dedicated to safeguarding and enhancing the structural integrity of homes in Wilsonville and throughout Oregon and Washington. With years of experience, we have helped countless homeowners in Wilsonville tackle the area’s distinct climate and soil challenges.”
From a cracking foundation and a musty basement to a damp crawl space and an uneven concrete slab, TerraFirma has the know-how, tools, and reliable solutions to restore your Wilsonville home and ensure it stays safe for years to come.
Wilsonville’s TOP-RATED Foundation & Basement Contractors
Contact us at (866) 486-7196 or use the form to the right.
Hours: Monday – Friday, 8am-5pm
Foundation Repair Wilsonville
Foundation issues can lead to significant damage to your home if not taken care of. In Wilsonville, OR, homeowners may see signs like floor cracks, bowing walls, and sagging floors, all of which can indicate deeper structural concerns. You might also notice sticking doors, windows that won’t close correctly, or gaps appearing between your walls and ceilings. These issues could be signals that your foundation is shifting due to soil movement, water damage, or natural wear over time.
At TerraFirma, we specialize in foundation repairs right here in Wilsonville, offering expert solutions that address the specific issues causing your foundation concerns. Our process starts with a thorough inspection to identify the extent of the problem and its root cause. After that, we’ll recommend the best foundation repair systems tailored to 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. Helical piers work great for well-known soil conditions, while push piers are the go-to solution for areas with uncertain soil stability. Both methods are minimally invasive and provide long-lasting solutions right here in Wilsonville, 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 professional installation, ongoing maintenance options, and transferable warranties, ensuring you feel confident and at ease in your Wilsonville home.
Basement Waterproofing Wilsonville
Dealing with a wet basement in Wilsonville? It can cause mold, mildew, structural issues, and impact your home’s air quality. You might notice musty odors, stained walls, pooling water, or efflorescence—a white, powdery residue that appears when water evaporates. Even a tiny crack in your basement wall can turn into a significant gateway for moisture.
TerraFirma provides top-notch basement waterproofing solutions in Wilsonville, ensuring your space stays dry, healthy, and functional—whatever the weather brings.
Crawl Space Repair Wilsonville
Don’t overlook your crawl space! It’s an essential part of your home’s structure and air quality here in Wilsonville. If left unmaintained, a neglected crawl space can become a breeding ground for mold, pests, and standing water. These issues can lead to wood rot, unpleasant odors, and even respiratory problems for your family.
We understand the crawl space conditions specific to Wilsonville, OR, and TerraFirma’s repair services are here to help. Our solutions tackle moisture, mold, pests, and sagging floors through complete encapsulation, drainage, and structural support.

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.

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 Wilsonville is crucial to maintaining your home’s overall health and energy efficiency.

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.

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.

Concrete Repair Wilsonville
Damaged, cracked, or uneven concrete can be more than just an eyesore; it’s a safety concern. Issues like poor soil compaction, freeze-thaw cycles, erosion, or tree root growth can lead to these problems. Residents of Wilsonville trust us to restore their concrete slabs, sidewalks, patios, and driveways quickly and effectively.
TerraFirma provides quick, efficient, and durable concrete leveling and repair services in Wilsonville, OR, utilizing cutting-edge polyurethane foam injection and expert crack sealing.
PolyLevel® Concrete Lifting
PolyLevel utilizes expanding polyurethane foam to lift and stabilize concrete slabs with ease. This non-invasive solution is perfect for residents of Wilsonville, OR, looking to:
- 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 Wilsonville, OR for industrial buildings, warehouse floors, roads, runways, and rail lines—using the same high-quality systems we trust for residential properties.
Earthquake Retrofitting Wilsonville, OR
Here in Wilsonville, OR, much of our beautiful Pacific Northwest is located in an active seismic zone. Homes built before the updated building codes of the 1990s may be at greater risk. Even a minor earthquake can lead to significant issues, like shifting off foundations or serious structural damage.
TerraFirma’s earthquake retrofitting services help secure your Wilsonville home to its foundation and strengthen its ability to withstand seismic events.
Earthquake retrofitting in Wilsonville not only enhances your home’s safety but can also help lower your insurance premiums and deductibles, plus may even qualify you for coverage options that weren’t available before the upgrade.
How We Retrofit
Assessment & Planning
In Wilsonville, the retrofitting process starts with a thorough evaluation of your building’s current condition. A skilled professional, like a structural engineer or a qualified technician, will assess 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. Afterward, our engineer will create a detailed retrofitting plan tailored to the findings.
Foundation Bolting
Securing the foundation is the next crucial step in the process here in Wilsonville. Our technicians install anchor bolts to firmly connect your home to its foundation, ensuring stability and preventing lateral movement during an earthquake.
Our process involves carefully drilling into the foundation and installing sturdy steel bolts. Our team then tightens these bolts to reinforce the structure, boosting its stability and making it more resistant to potential seismic activity.
Adding Shear Walls
In Wilsonville, shear walls play a vital role in earthquake retrofitting by helping to distribute seismic forces and keeping your home safe from collapse.
Shear walls are usually made from plywood or other sturdy materials, and they are strategically placed 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
Next, we focus on strengthening key areas of your home in Wilsonville by adding steel braces and straps. Our team expertly installs these reinforcements to essential structural elements like the roof, walls, and floors. This crucial step enhances your home’s stability, creating a robust framework designed to withstand seismic forces.
Securing Applicances
Securing your appliances can help create a safer home for everyone in Wilsonville. It’s important to anchor items like water heaters and refrigerators to prevent them from tipping over. Our technicians can also install safety measures for gas meters, minimizing the risk of gas leaks and ensuring peace of mind for you and your family.
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.

Secure Your Wilsonville Home Today
At TerraFirma, we’ve spent over 25 years helping homeowners in Wilsonville 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 Wilsonville, OR has its unique qualities—and TerraFirma has a 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.
Wilsonville
Homeowners Frequently Asked Questions
How does rain put my home at risk ?
SeaTac soils are impacted by heavy rains causing hydrostatic pressure. This leads to cracks in foundations and basements and may cause your foundation to settle or sink. Engineered support structures and comprehensive drainage systems are key to keeping your home dry, safe, and stable.
What’s the best way to repair concrete?
The NexusPro solution is a commercial grade joint sealant that offers several advantages over traditional concrete crack repairs. Its fast cure time (60 minutes) and performance under extreme temperatures makes it a perfect match for concrete repairs.
What types of cracks in my foundation or basement should I be concerned with?
Houses are susceptible to cracks in basements due to heavy rains and wet soils. Watch out for horizontal or stair step cracking along the foundation wall, diagonal cracks in the corners, crumbling walls and inward bulges.
How to fix a leaking basement floor?
If you have water coming through the floor or windows to your basement, the first step is installing a perimeter drain system. We can also install a direct drainage channel, which will help direct any water that comes through the crack into the drain and your sump pump.
Are you noticing damp drywall and carpet in your basement?
Musty smells, walls that feel damp to the touch, and ground-level leaks are all indicators that your basement may need to be waterproofed. Don’t wait until the next heavy rain to protect your home from water damage.
Which vapor barrier is best for weeping walls?
The VaporLoc Elite Wall System is better for weeping walls than other commonly used vapor barriers. The VLE system has double sealed seams, waterproof material (not water-resistant), and is much thicker than vapor barriers available at retail stores.
Can I turn my crawl space into storage?
TerraFirma offers comprehensive encapsulation solutions to keep your crawl space clean, dry, and secure from outside threats. Our industry-leading vapor barrier system keeps out destructive moisture while greatly improving your indoor air quality. In most homes, TerraFirma can even encapsulate your crawl space, giving you a clean, dry area suitable for storage.
How to repair damaged concrete?
While you could seal concrete with urethane caulk found at your local big-box DIY store, that is a solution that is prone to cracking, bubbling and drying out over time. The local experts at TerraFirma are here to help with long lasting solutions to level seal your unprotected joints and cracked concrete.
What is that bad smell coming up from my drain?
Unwanted air and gasses are coming up through your home’s drain system. A great fix is our TrenchLock™ drain insert that can be installed in an existing trench drain to allow water down without allowing air to come up. The system comes with balls that fit over the drainage holes, which create an airtight seal when there is no water.
What is the difference between helical piers and push piers?
Helical piers and push piers are both types of foundation repair methods, but they differ in their design and installation process. The choice between helical piers and push piers depends on factors such as soil conditions and structural requirements. Helical piers are often preferred in areas with weak or unstable soil conditions.
How long does basement waterproofing last?
TerraFirma-installed waterproofing systems are expected to last decades with regular care & maintenance. We also warranty our installations, our WaterGuard and DryTrak drainage systems come with a transferrable lifetime warranty. Terms apply, view the details here. We stand by our work and the quality of the systems we install.