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Foundation, Crawlspace & Concrete Contractors in Maple Valley, WA
Terrafirma in Maple Valley, WA
At TerraFirma, we focus on safeguarding and enhancing the structural integrity of homes throughout Oregon and Washington. We’ve proudly served homeowners in Maple Valley for years, helping them tackle the unique climate and soil challenges of the area.
From a cracking foundation to a musty basement, a damp crawl space, or an uneven concrete slab, TerraFirma has the expertise, tools, and reliable systems to restore your Maple Valley home and ensure its safety for years ahead.
Maple Valley’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 Maple Valley
Foundation issues can lead to significant damage to your home if not taken care of. In Maple Valley, WA, homeowners may notice signs like floor cracks, bowing walls, and sagging floors, all of which could indicate deeper structural problems. You might find doors that stick, windows that won’t close properly, or visible gaps between walls and ceilings. These issues can signal that your foundation is shifting due to soil movement, water damage, or natural wear and tear.
At TerraFirma, we specialize in foundation repairs right here in Maple Valley, offering targeted and expert solutions designed to address the specific causes of your foundation issues. Our process starts with a thorough inspection to evaluate the extent and source of the problem. After that, we recommend one or more of our proven foundation repair systems tailored to your needs:
Foundation piers
Our push and helical piers are expertly designed to stabilize and lift your foundation by channeling its weight to deeper, more stable soil. Helical piers work best in areas with known soil conditions, while push piers are ideal for locations where soil stability may be uncertain. Both systems are minimally invasive and provide lasting, 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.
Every solution comes with professional installation, flexible maintenance options, and transferable warranties, so you can enjoy confidence and peace of mind in your Maple Valley home.
Basement Waterproofing Maple Valley
Water in your basement can cause serious issues like mold, mildew, structural damage, and compromised air quality in your home. In Maple Valley, 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. Even a small crack in your basement wall can become a significant gateway for moisture.
TerraFirma provides cutting-edge basement waterproofing solutions in Maple Valley to ensure your space stays dry, healthy, and functional—whatever the weather brings.
Crawl Space Repair Maple Valley
Crawl spaces in Maple Valley might be easy to forget, but they play a vital role in your home’s structure and air quality. If neglected, these spaces can become a breeding ground for mold, pests, and standing water. This can result in wood rot, unpleasant odors, and even health problems for your family.
We understand the crawl space challenges specific to Maple Valley, WA, and TerraFirma’s repair services are tailored to tackle issues like moisture, mold, pests, and sagging floors. Our comprehensive solutions include full encapsulation, effective drainage, and sturdy 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 Maple Valley 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 Maple Valley
Cracked, damaged, or uneven concrete can be more than just an eyesore—it can also pose safety risks. Issues like poor soil compaction, freeze-thaw cycles, erosion, or tree root growth can lead to these problems. Residents of Maple Valley trust us to quickly and efficiently restore their concrete slabs, sidewalks, patios, and driveways.
TerraFirma provides quick, efficient, and durable concrete leveling and repair solutions in Maple Valley, WA, utilizing state-of-the-art polyurethane foam injection and expert crack sealing.
PolyLevel® Concrete Lifting
PolyLevel uses expanding polyurethane foam to lift and stabilize concrete slabs, providing a non-invasive solution that’s perfect for Maple Valley homeowners looking to:
- 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 Maple Valley, WA for industrial buildings, warehouse floors, roads, runways, and rail lines—using the same high-quality systems we trust for residential properties.
Earthquake Retrofitting Maple Valley, WA
Much of the Pacific Northwest, including Maple Valley, is located in an active seismic zone. Homes built before the updated building codes in the 1990s are particularly at risk. Even a minor earthquake can lead to homes shifting off their foundations or suffering significant structural damage.
TerraFirma’s earthquake retrofitting services help secure your Maple Valley home to its foundation and strengthen its ability to withstand seismic events.
By retrofitting your home in Maple Valley for earthquakes, you can not only enhance its safety but also potentially lower your insurance premiums, reduce deductibles, and gain access to coverage options that weren’t available before the upgrade.
How We Retrofit
Assessment & Planning
In Maple Valley, WA, our retrofitting process starts with a comprehensive assessment of your building’s current condition. A qualified expert, like a structural engineer or a trained technician, will inspect your home to pinpoint any weaknesses and suggest the best solutions for improvement.
This assessment involves a thorough inspection of the foundation, walls, roof, and overall structure. Afterward, our engineer will create a detailed retrofitting plan tailored to the findings.
Foundation Bolting
Securing the foundation is the next crucial step in the process. Our technicians install anchor bolts to tightly connect your home to its foundation, ensuring stability and preventing any lateral movement during an earthquake here in Maple Valley.
In Maple Valley, we enhance the stability of your home by drilling into the foundation and installing steel bolts. Our skilled team tightens these bolts to ensure your structure is secure and better able to withstand seismic forces.
Adding Shear Walls
Shear walls play a vital role in earthquake retrofitting in Maple Valley, WA, as they help distribute seismic forces and keep buildings safe from collapsing.
Shear walls are typically made from plywood or other durable materials and are strategically placed throughout your home, especially in areas like cripple walls. They enhance the stability and support of your walls, significantly lowering the risk of damage during an earthquake—a crucial feature for homes in Maple Valley, WA.
Bracing & Reinforcing
Next, we focus on strengthening key areas of your Maple Valley home with durable steel braces and straps. Our team expertly attaches these supports to essential structural elements like the roof, walls, and floors. This crucial step enhances your home’s stability, creating a robust framework capable of withstanding seismic forces.
Securing Applicances
Securing your appliances is key to creating a safer home for all residents in Maple Valley. It’s important to anchor items like water heaters and refrigerators. Our technicians will also install protective measures 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 Maple Valley Home Today
At TerraFirma, we’ve spent over 25 years helping homeowners in Maple Valley 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.
Maple Valley homes each have their unique charm—and at TerraFirma, we have solutions tailored for every challenge. Reach out to us today for a free in-home estimate and see how we can help enhance the safety, health, and value of your home for years to come.
Maple Valley
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.
