Foundation, Crawlspace & Concrete Contractors in Longview, WA
Terrafirma in Longview, WA
At TerraFirma, we’re dedicated to protecting and enhancing the structural integrity of homes right here in Longview, WA. For years, we’ve helped local homeowners tackle the unique climate and soil challenges of our region with reliable repair services.
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 restore your Longview home and ensure it stays safe for years to come.
Longview’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 Longview
If you live in Longview, WA, it’s important to pay attention to your home’s foundation. Ignoring issues like cracked floors, bowing walls, or sagging floors can lead to serious damage. You may also notice sticking doors, windows that won’t close properly, or gaps between your walls and ceilings. These signs often indicate that your foundation is shifting, which can be caused by soil movement, water damage, or the natural aging of your home. Don’t wait until it gets worse addressing these issues sooner can save you time and money down the line.
At TerraFirma, we specialize in foundation repair right here in Longview. Our expert team provides customized solutions 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, followed by recommendations for our trusted foundation repair systems.
Foundation piers
Our push and helical piers are designed to stabilize and lift your foundation in Longview by transferring its weight to deeper, more stable soil. Helical piers work great for areas with known soil conditions, while push piers are the best choice 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, flexible maintenance options, and transferable warranties, so you can feel confident and at ease in your Longview home.
Basement Waterproofing Longview
In Longview, WA, a wet basement can create serious issues like mold, mildew, structural damage, and poor air quality in your home. You might notice signs of water intrusion such as musty odors, stained walls, pooling water, or efflorescence a white, powdery residue that appears when water evaporates. Remember, even a small crack in your basement wall can open the door to bigger moisture problems.
TerraFirma provides top-notch basement waterproofing solutions in Longview, ensuring your space stays dry, healthy, and functional regardless of the weather.
Crawl Space Repair Longview
Crawl spaces in Longview, WA, are often forgotten, but they play a vital role in your home’s structure and air quality. If left unattended, a neglected crawl space can become a breeding ground for mold, pests, and even standing water. These issues can result in wood rot, unpleasant odors, and potential respiratory problems for your family.
At TerraFirma, we understand the unique crawl space challenges in Longview, WA. Our expert crawl space repair services tackle 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 Longview 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 Longview
Damaged, cracked, or uneven concrete isn’t just an eyesore it’s a safety risk. Issues like poor soil compaction, freeze-thaw cycles, erosion, or tree root growth can all contribute to these problems. That’s why homeowners in Longview count on us for quick and effective repairs for their concrete slabs, sidewalks, patios, and driveways.
TerraFirma provides quick, reliable, and lasting concrete leveling and repair services right here in Longview, WA, using cutting-edge polyurethane foam injection and expert crack sealing.
PolyLevel® Concrete Lifting
PolyLevel utilizes expanding polyurethane foam to lift and stabilize concrete slabs. This non-invasive method is perfect for the residents of Longview, WA, 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 Longview, WA for industrial buildings, warehouse floors, roads, runways, and rail lines—using the same high-quality systems we trust for residential properties.
Earthquake Retrofitting Longview, WA
Longview, WA, is located in an active seismic zone, making it important for homeowners to be aware of their property’s stability. Homes built before the 1990s, when updated building codes were introduced, are particularly at risk. Even a small earthquake could lead to significant issues, such as shifting off its foundation or sustaining serious structural damage.
TerraFirma’s earthquake retrofitting services help secure your Longview home to its foundation and strengthen its ability to withstand seismic events.
Enhancing your home with earthquake retrofitting in Longview can help lower your insurance premiums and deductibles, and it may even make you eligible for coverage that wasn’t available before the upgrade.
How We Retrofit
Assessment & Planning
In Longview, WA, our retrofitting process starts with a thorough assessment of your building’s current condition. An experienced professional, like a structural engineer or skilled technician, will inspect your home to pinpoint any weaknesses and suggest the best solutions.
This assessment involves a thorough inspection of the foundation, walls, roof, and overall structure. From there, our engineer creates a detailed retrofitting plan tailored to the specific findings.
Foundation Bolting
Strengthening your home’s foundation is the next important step. Our technicians will install anchor bolts to securely attach your house to its foundation, helping to prevent any movement during an earthquake.
Our process includes drilling into the foundation and installing sturdy steel bolts. Our team then tightens these bolts to reinforce the structure, increasing its stability and making it more resilient to seismic activity.
Adding Shear Walls
Shear walls play a vital role in earthquake retrofitting in Longview, WA, as they help distribute seismic forces and keep buildings safe from collapsing during an earthquake.
In Longview, WA, shear walls are built using sturdy materials like plywood, strategically placed throughout your home, especially in areas known as cripple walls. These reinforcements add vital support and stability, helping to minimize the risk of damage during an earthquake.
Bracing & Reinforcing
Next, we strengthen the essential areas of your Longview home with durable steel braces and straps. Our team carefully installs these reinforcements on key structural elements like the roof, walls, and floors. This crucial step enhances your home’s overall stability, ensuring it has the robust framework needed to withstand seismic forces.
Securing Applicances
Secure your appliances for a safer home in Longview, WA. Anchoring items like water heaters and refrigerators is crucial. Our technicians 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.

Secure Your Longview Home Today
At TerraFirma, we’ve spent over 25 years helping homeowners in Longview 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 Longview, WA has its own unique charm and challenges but TerraFirma is here to help with personalized solutions. Reach out to us today for a free in-home estimate and find out how we can enhance the safety, health, and value of your home for years to come.
Longview
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.