Foundation, Crawlspace & Concrete Contractors in Washougal, WA
Terrafirma in Washougal, WA
At TerraFirma, we’re dedicated to safeguarding and strengthening the structural integrity of homes in Washougal, WA. For years, we’ve been helping homeowners in the area tackle the unique climate and soil challenges that come with living here.
From a cracking foundation to a musty basement, a damp crawl space, or an uneven concrete slab, TerraFirma has the knowledge, tools, and reliable solutions to ensure your Washougal home is safe and sound for years to come.
Washougal’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 Washougal
Don’t let foundation issues spell trouble for your home in Washougal, WA. If you’re noticing floor cracks, bowing walls, or sagging floors, these could be signs of more serious structural problems. Homeowners in the area might also find doors sticking, windows that won’t close properly, or gaps appearing between walls and ceilings. These symptoms often indicate shifting foundations caused by soil movement, water damage, or the natural wear and tear of aging. It’s important to address these issues before they lead to bigger problems.
At TerraFirma, we specialize in foundation repair right here in Washougal, offering expert solutions designed specifically for the unique challenges of your home. Our process starts with a thorough inspection to identify the root cause of your foundation issues. From there, we recommend one or more of our trusted 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 best for areas with known soil conditions, while push piers are great for places where soil stability may be uncertain. Both options are minimally invasive and provide lasting solutions for your home in Washougal.
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, providing you with confidence and peace of mind in your Washougal home.
Basement Waterproofing Washougal
Living in Washougal, WA, you know how important it is to keep your home dry and healthy. A wet basement can create a perfect environment for mold, mildew, and even structural damage, not to mention poor air quality in your home. Signs of water intrusion might include musty odors, stained walls, puddles of water, or efflorescence—a white, powdery substance that appears when water evaporates. Even a tiny crack in your basement wall can open the door to unwanted moisture. Don’t wait for small issues to become big problems!
TerraFirma provides cutting-edge basement waterproofing solutions right here in Washougal, ensuring your space stays dry, healthy, and functional—whatever the weather brings.
Crawl Space Repair Washougal
Crawl spaces in Washougal are often neglected, yet they play a vital role in your home’s overall structure and air quality. If left unaddressed, a forgotten crawl space can become a haven for mold, pests, and standing water. These issues can lead to wood rot, unpleasant odors, and even respiratory problems for those living in your home.
We understand the unique crawl space challenges in Washougal, WA. That’s why TerraFirma offers tailored crawl space repair services to tackle issues like moisture, mold, pests, and sagging floors with effective solutions such as full 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 Washougal 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 Washougal
Cracked, damaged, or uneven concrete can be more than just an eyesore—it poses safety risks, too. Issues like poor soil compaction, freeze-thaw cycles, erosion, and tree roots can all contribute to these problems. Residents of Washougal trust us to promptly and effectively repair their concrete slabs, sidewalks, patios, and driveways.
At TerraFirma, we provide quick, efficient, and long-lasting concrete leveling and repair services right here in Washougal, WA, using cutting-edge polyurethane foam injection and expert crack sealing.
PolyLevel® Concrete Lifting
PolyLevel uses expanding polyurethane foam to lift and stabilize concrete slabs. This non-invasive method is perfect for residents of Washougal who are looking to address:
- 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 Washougal, WA for industrial buildings, warehouse floors, roads, runways, and rail lines—using the same high-quality systems we trust for residential properties.
Earthquake Retrofitting Washougal, WA
Much of the Pacific Northwest, including Washougal, is situated in an active seismic zone. Homes built before the updated building codes of the 1990s may be particularly at risk. Even a small earthquake can lead to significant issues, such as shifting a home off its foundation or causing serious structural damage.
TerraFirma’s earthquake retrofitting services help secure your Washougal home to its foundation and strengthen its ability to withstand seismic events.
Enhancing your home with earthquake retrofitting in Washougal not only strengthens its safety but can also lower your insurance premiums and deductibles, plus make you eligible for coverage options that weren’t available before the upgrade.
How We Retrofit
Assessment & Planning
In Washougal, WA, the retrofitting journey starts with a thorough evaluation of your building’s current state. A knowledgeable expert, like a structural engineer or trained technician, will inspect your home to pinpoint any vulnerabilities and suggest the best solutions.
This evaluation involves a thorough inspection of the foundation, walls, roof, and overall structure. Afterward, the engineer creates a detailed retrofitting plan tailored to the findings.
Foundation Bolting
Stabilizing the foundation is the next important step in this process. Our technicians install anchor bolts to firmly connect your home to its foundation, helping to prevent sideways movement during an earthquake.
This process involves drilling holes into your foundation and inserting steel bolts. Our team will tighten these bolts, securing your home and improving its stability against seismic forces.
Adding Shear Walls
Shear walls are essential for earthquake retrofitting in Washougal, WA, as they help distribute seismic forces and keep buildings from collapsing.
In Washougal, WA, shear walls are often made from plywood or other durable materials and are strategically placed throughout homes, especially in areas known as cripple walls. These walls enhance the overall support and stability of your home, helping to minimize the risk of damage during an earthquake.
Bracing & Reinforcing
Next, we focus on strengthening vital areas of your Washougal home by adding steel braces and straps. Our team carefully installs these reinforcements on essential structural elements like the roof, walls, and floors. This important step enhances your home’s overall stability, ensuring it has a robust framework capable of withstanding seismic forces.
Securing Applicances
Ensuring your appliances are secured can create a safer living environment for everyone in Washougal. It’s essential to anchor items like water heaters and refrigerators. Our technicians also provide protection for gas meters to help minimize 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.

Secure Your Washougal Home Today
At TerraFirma, we’ve spent over 25 years helping homeowners in Washougal 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 Washougal, WA is unique, and at TerraFirma, we have the perfect solution for every challenge you face. Reach out to us today for a free in-home estimate and find out how we can help enhance your home’s safety, health, and value for years to come.
Washougal
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.