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Foundation, Crawlspace & Concrete Contractors in Olympia, WA
Terrafirma in Olympia, WA
At TerraFirma, we specialize in protecting and enhancing the structural integrity of homes across Oregon and Washington. For years, we have provided repair services for many homeowners in Olympia, helping them overcome the region’s unique climate and soil challenges.
Whether it’s a cracking foundation, a musty basement, a damp crawl space, or an uneven concrete slab, TerraFirma has the expertise, tools, and trusted systems to get your Olympia home back in shape and keep it safe for years to come.
Olympia’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 Olympia
Foundation issues can cause serious damage to a home if left unaddressed. Symptoms such as floor cracks, bowing walls, and sagging floors often signal deeper structural problems. Homeowners in Olympia, WA might notice doors that stick, windows that won’t close properly, or visible gaps between walls and ceilings. These can all be signs that the foundation is shifting due to soil movement, water damage, or age-related deterioration.
At TerraFirma, we repair foundations in Olympia with targeted, expert solutions tailored to the underlying cause of your foundation distress. Our process begins with a comprehensive inspection to assess the extent and source of the problem. Then we recommend one or more of our proven foundation repair systems:
Foundation piers
Our push and helical piers are engineered to stabilize and lift your foundation by transferring its load to deeper, more stable soil. Helical piers are ideal for known soil conditions, while push piers are perfect for areas with uncertain soil stability. Both systems are minimally invasive and offer permanent solutions.
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.
Each solution is backed by expert installation, ongoing maintenance options, and transferable warranties, giving you confidence and peace of mind in your Olympia home.
Basement Waterproofing Olympia
A wet basement can lead to mold, mildew, structural damage, and poor air quality throughout your home. Water intrusion may show up as musty smells, stained walls, pooling water, or efflorescence—a white, powdery substance left behind when water evaporates. Even a small crack in your basement wall can become a major entry point for moisture.
TerraFirma offers advanced basement waterproofing solutions in Olympia designed to keep your space dry, healthy, and functional—no matter the weather.
Crawl Space Repair Olympia
Crawl spaces are often overlooked, but they are a crucial part of your home’s structure and air quality. Left unchecked, a neglected crawl space can harbor mold, pests, and standing water. These conditions may lead to wood rot, foul odors, and even respiratory issues for the home’s occupants.
We know your Olympia, WA crawl space conditions well, and TerraFirma’s crawl space repair services are designed to address moisture, mold, pests, and sagging floors through full encapsulation, drainage, and structural support.
Encapsulation & Drainage
We begin by sealing the crawl space with our heavy duty vapor barrier 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
- Crawl Space Access Doors: Waterproof, durable entry systems that keep out pests and moisture.
- Crawl Space 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 Olympia 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 Basement Air Dehumidifier 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 Olympia
Damaged, cracked, or uneven concrete isn’t just unsightly—it’s a safety hazard. These problems can develop due to poor soil compaction, freeze-thaw cycles, erosion, or tree root growth. Homeowners in Olympia look to us to fix their concrete slabs, sidewalks, patios, and driveways quickly and effectively.
TerraFirma offers fast, clean, and long-lasting concrete leveling and repair solutions using advanced polyurethane foam injection and crack sealing.
PolyLevel® Concrete Lifting
PolyLevel uses expanding polyurethane foam to raise and stabilize concrete slabs. This non-invasive technique is ideal for:
- 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 Olympia, WA for industrial buildings, warehouse floors, roads, runways, and rail lines—using the same high-quality systems we trust for residential properties.
Earthquake Retrofitting Olympia, WA
Much of the Pacific Northwest lies in an active seismic zone. Homes built before updated codes were enacted in the 1990s are especially vulnerable. Even a minor earthquake can cause a home to shift off its foundation or experience severe structural damage.
TerraFirma’s earthquake retrofitting services help secure your Olympia home to its foundation and strengthen its ability to withstand seismic events.
Earthquake retrofitting in Olympia offers the added benefit of reducing insurance premiums, deductibles, and even qualifying for coverage that wasn’t available prior to upgrade.
How We Retrofit
Assessment & Planning
The retrofitting process begins with a detailed assessment of the building’s current condition. An expert, such as a structural engineer or trained technician, inspects the home to identify weaknesses and recommend appropriate solutions.
This evaluation includes examining the foundation, walls, roof, and overall framework. Then, the engineer develops a comprehensive retrofitting plan based on the findings.
Foundation Bolting
Securing the foundation is the next step in this process. Technicians install anchor bolts to connect the house to its foundation, preventing lateral movement during an earthquake.
This process involves drilling holes into the foundation and inserting steel bolts. The workers then tighten the bolts to secure the structure, enhancing its stability and resistance to seismic forces.
Adding Shear Walls
Shear walls are another critical component of earthquake retrofitting as they distribute seismic forces and prevent the structure from collapsing.
Shear walls typically consist of plywood or other strong materials, and workers install them in strategic locations throughout the home particularly in cripple walls. They provide the walls with additional support and stability, reducing the risk of failure during an earthquake.
Bracing & Reinforcing
Next comes bracing and reinforcing critical areas of the home with steel braces and straps. Workers install these to key structural elements such as the roof, walls, and floors. This step increases the home’s overall stability, so it has a tough framework that can withstand seismic forces.
Securing Applicances
Securing appliances will create a safer living environment for occupants. Anchoring items such as water heaters and refrigerators are essential. Technicians will also install protection for gas meters to limit 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 Olympia Home Today
At TerraFirma, we’ve spent over 20 years helping homeowners in Olympia 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 Olympia, WA is different—but TerraFirma has a solution for every challenge. Contact us today for a free in-home estimate and discover how we can help make your home safer, healthier, and more valuable for years to come.
OLYMPIA
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?
Our heavy duty vapor barrier is better for weeping walls than other commonly used vapor barriers. With 120 mil sheets, double sealed seams, waterproof material (not water-resistant), it’s 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.
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