Foundation, Crawlspace & Concrete Contractors in Olalla, WA
Terrafirma in Olalla, WA
At TerraFirma, we’re dedicated to safeguarding and improving the structural integrity of homes in Olalla, WA. For years, we’ve been helping local homeowners tackle the unique challenges posed by our region’s climate and soil.
From a cracking foundation and musty basement to a damp crawl space or an uneven concrete slab, TerraFirma has the knowledge, tools, and reliable solutions to restore your Olalla home and ensure it stays safe for years to come.
Olalla’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 Olalla
Foundation issues can lead to major damage if not taken care of in time. In Olalla, WA, homeowners might spot signs like cracks in the floors, bowing walls, or uneven floors these often indicate more serious structural problems. You may also notice sticking doors, windows that won’t close properly, or gaps between the walls and ceilings. These issues can all point to a shifting foundation caused by soil movement, water damage, or just the natural aging process.
At TerraFirma, we specialize in foundation repair for homeowners in Olalla. Our expert solutions are designed to address the specific causes of your foundation issues. We start with a thorough inspection to evaluate the extent and source of the problem, and then we recommend the most effective foundation repair systems tailored to your needs.
Foundation piers
In Olalla, WA, our push and helical piers are designed to stabilize and elevate your foundation by shifting its weight to deeper, more stable soil. Helical piers work best in areas with known soil conditions, while push piers are ideal for spots where soil stability is uncertain. Both systems 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 professional installation, ongoing maintenance options, and transferable warranties, ensuring your peace of mind in your Olalla home.
Basement Waterproofing Olalla
Living in Olalla, WA, you know how important it is to keep your basement dry. A wet basement can create issues like mold, mildew, structural damage, and poor air quality in your home. Look out for signs of water intrusion, such as musty odors, stained walls, pooling water, or efflorescence the white powdery residue that appears when water evaporates. Even a small crack in your basement wall can open the door for moisture to sneak in.
At TerraFirma, we provide top-notch basement waterproofing solutions in Olalla, ensuring your space stays dry, healthy, and functional, rain or shine.
Crawl Space Repair Olalla
Crawl spaces in Olalla may often be forgotten, but they’re essential for your home’s structure and air quality. If left unattended, these areas can become breeding grounds for mold, pests, and standing water. Ignoring these issues can result in wood rot, unpleasant odors, and even health problems for those living in your home.
At TerraFirma, we understand the unique crawl space challenges in Olalla, WA. Our repair services are tailored to tackle issues like moisture, mold, pests, and sagging floors with comprehensive solutions including full encapsulation, effective drainage, and robust 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 Olalla 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 Olalla
Damaged, cracked, or uneven concrete isn’t just an eyesore it can also pose a safety risk. Issues like poor soil compaction, freeze-thaw cycles, erosion, or tree root growth can cause these problems over time. That’s why homeowners in Olalla trust us to quickly and effectively repair their concrete slabs, sidewalks, patios, and driveways.
Olalla residents, trust TerraFirma for quick, clean, and durable concrete leveling and repair. We use cutting-edge polyurethane foam injection and expert crack sealing to restore your surfaces.
PolyLevel® Concrete Lifting
PolyLevel utilizes expanding polyurethane foam to lift and stabilize concrete slabs. This non-invasive method is perfect for the Olalla, WA area because it:
- 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 Olalla, WA for industrial buildings, warehouse floors, roads, runways, and rail lines—using the same high-quality systems we trust for residential properties.
Earthquake Retrofitting Olalla, WA
Olalla, WA, is located in an area of the Pacific Northwest that is known for its seismic activity. Homes constructed before the 1990s, when updated building codes were introduced, are particularly at risk. Even a small earthquake can lead to a house shifting off its foundation or suffering significant structural damage.
TerraFirma’s earthquake retrofitting services help secure your Olalla home to its foundation and strengthen its ability to withstand seismic events.
Retrofitting your home in Olalla for earthquakes not only enhances safety but can also lower your insurance premiums and deductibles, plus it may help you qualify for coverage that was unavailable before the upgrade.
How We Retrofit
Assessment & Planning
In Olalla, WA, the retrofitting process starts with a thorough assessment of your building’s current condition. A skilled professional, like a structural engineer or trained technician, will inspect your home to pinpoint any weaknesses and suggest the best solutions.
This evaluation looks at the foundation, walls, roof, and overall structure. Afterward, our engineer creates a detailed retrofitting plan based on what we discover.
Foundation Bolting
Securing the foundation is an essential next step in the process here in Olalla, WA. Our technicians expertly install anchor bolts to firmly connect your home to its foundation, helping to prevent any lateral movement during an earthquake.
Our process involves drilling into the foundation and placing sturdy steel bolts. Once secured, these bolts are tightened to strengthen the structure, improving its stability and resistance to seismic activity, right here in Olalla, WA.
Adding Shear Walls
Shear walls play a crucial role in earthquake retrofitting by helping to distribute seismic forces and keeping buildings in Olalla, WA safe from collapse.
In Olalla, WA, shear walls are commonly made from plywood or other durable materials and are strategically placed throughout homes, especially in cripple walls. These walls enhance support and stability, helping to minimize the risk of damage during an earthquake.
Bracing & Reinforcing
Up next, we’ll strengthen essential parts of your Olalla home using durable steel braces and straps. Our team carefully installs these to vital structural components like the roof, walls, and floors, enhancing the home’s stability. This added support ensures your house is better equipped to handle seismic activity.
Securing Applicances
Ensuring your appliances are securely anchored can help create a safer home for everyone in Olalla. It’s important to properly secure items like water heaters and refrigerators. Our skilled technicians can also install safeguards for gas meters to 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 Olalla Home Today
At TerraFirma, we’ve spent over 25 years helping homeowners in Olalla 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 Olalla, WA has its own unique characteristics, and at TerraFirma, we have the perfect solution for whatever challenges you face. Reach out to us today for a complimentary in-home estimate, and let us show you how we can enhance your home’s safety, health, and value for years to come.
Olalla
Homeowners Frequently Asked Questions
How does rain put my home at risk ?
Western Washington 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.