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Foundation, Crawlspace & Concrete Contractors in Des Moines, WA
Terrafirma in Des Moines, WA
At TerraFirma, we focus on protecting and enhancing the structural integrity of homes throughout Washington, including right here in Des Moines. With years of experience, we’ve helped countless homeowners tackle the unique climate and soil challenges of our region.
Whether you’re dealing with a cracked foundation, a musty basement, a damp crawl space, or an uneven concrete slab, TerraFirma has the expertise, tools, and reliable solutions to restore your Des Moines home and keep it safe for years to come.
Des Moines’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 Des Moines
Foundation issues can lead to significant damage to your home if not taken care of. Look out for signs like cracks in the floor, bowing walls, and sagging floors, as these may indicate more serious structural problems. Homeowners in Des Moines, WA might also experience sticking doors, windows that don’t close properly, or noticeable gaps between walls and ceilings. These could all point to a shifting foundation caused by soil movement, water damage, or natural aging.
At TerraFirma, we specialize in foundation repair in Des Moines, offering expert solutions designed specifically for the root cause of your foundation issues. We start with a thorough inspection to evaluate the extent and source of the problem, followed by personalized recommendations for our trusted foundation repair systems.
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 in areas with known soil conditions, whereas push piers are perfect for locations with uncertain soil stability. Both methods are minimally invasive and provide long-lasting solutions for your foundation needs in Des Moines, WA.
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, so you can feel confident and at ease in your Des Moines home.
Basement Waterproofing Des Moines
Living in Des Moines, WA, a wet basement can cause serious problems 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, standing water, or white, powdery residues from evaporated water. Remember, even a small crack in your basement wall can turn into a significant entry point for moisture.
TerraFirma provides top-notch basement waterproofing solutions in Des Moines, ensuring your space stays dry, healthy, and functional—come rain or shine.
Crawl Space Repair Des Moines
Crawl spaces are frequently overlooked, but they play a vital role in the structure and air quality of your Des Moines home. If neglected, these areas can become breeding grounds for mold, pests, and standing water. This can result in wood rot, unpleasant odors, and even respiratory problems for you and your family.
At TerraFirma, we understand the unique crawl space conditions in Des Moines, WA. Our expert crawl space repair services are tailored to tackle issues like moisture, mold, pests, and sagging floors, providing comprehensive 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 Des Moines 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 Des Moines
Cracked, damaged, or uneven concrete isn’t just an eyesore—it’s a safety issue. These problems can arise from poor soil compaction, freeze-thaw cycles, erosion, or tree root growth. Homeowners in Des Moines turn to us for fast and effective solutions for their concrete slabs, sidewalks, patios, and driveways.
TerraFirma provides quick, efficient, and durable concrete leveling and repair services in Des Moines, WA, using state-of-the-art polyurethane foam injection and expert crack sealing.
PolyLevel® Concrete Lifting
PolyLevel utilizes expanding polyurethane foam to lift and stabilize concrete slabs in Des Moines, WA. This non-invasive method is perfect 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 Des Moines, WA for industrial buildings, warehouse floors, roads, runways, and rail lines—using the same high-quality systems we trust for residential properties.
Earthquake Retrofitting Des Moines, WA
Des Moines, WA, is situated in an active seismic zone, making it important for homeowners to be aware of their property’s safety. Homes constructed before the updated building codes of the 1990s may be particularly at risk. Even a minor earthquake can lead to a home shifting off its foundation or suffering significant structural damage.
TerraFirma’s earthquake retrofitting services help secure your Des Moines home to its foundation and strengthen its ability to withstand seismic events.
“Upgrading your home with earthquake retrofitting in Des Moines can help lower your insurance premiums and deductibles, and may even make you eligible for coverage that wasn’t accessible before the upgrade.”
How We Retrofit
Assessment & Planning
In Des Moines, WA, the retrofitting process starts with a thorough evaluation of your building’s current state. A qualified expert, like a structural engineer or a trained technician, will inspect your home to pinpoint any weaknesses and suggest the right solutions.
This evaluation involves assessing the foundation, walls, roof, and overall structure of your home. Following this inspection, our engineer will create a detailed retrofitting plan tailored to the findings.
Foundation Bolting
Ensuring your home’s foundation is secure is the next important step. Our technicians will install anchor bolts to firmly connect your house to its foundation, helping to prevent any sideways movement during an earthquake.
Our process involves carefully drilling into the foundation and installing steel bolts. Our team then tightens these bolts to reinforce the structure, improving its stability and making it more resilient against seismic activity.
Adding Shear Walls
Shear walls play a vital role in earthquake retrofitting in Des Moines, WA, as they help distribute seismic forces and keep buildings from collapsing.
Shear walls are usually made from plywood or other durable materials and are placed in key areas of your home, especially in cripple walls. These walls offer extra support and stability, helping to reduce the risk of damage during an earthquake.
Bracing & Reinforcing
Next, we focus on strengthening essential areas of your home in Des Moines with durable steel braces and straps. Our team carefully installs these reinforcements to key structural components like the roof, walls, and floors. This vital step enhances your home’s stability, ensuring it has a robust framework ready to handle seismic activity.
Securing Applicances
By securing your appliances, you can enhance the safety of your home in Des Moines, WA. Anchoring important items like water heaters and refrigerators is key. Our technicians also offer protection for gas meters to help 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 Des Moines Home Today
At TerraFirma, we’ve spent over 25 years helping homeowners in Des Moines 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 Des Moines, WA has its own unique needs—and TerraFirma is here to tackle every challenge. Reach out to us today for a complimentary in-home estimate and find out how we can enhance the safety, health, and value of your home for years to come.
Des Moines
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.
