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Foundation, Crawlspace & Concrete Contractors in Shoreline, WA
Terrafirma in Shoreline, WA
At TerraFirma, we’re dedicated to protecting and enhancing the structural integrity of homes right here in Shoreline, WA, and throughout Washington and Oregon. For years, we’ve offered reliable repair services to homeowners in Shoreline, helping them tackle the area’s unique climate and soil challenges.
From cracking foundations and musty basements to damp crawl spaces and uneven concrete slabs, TerraFirma has the expertise, tools, and reliable solutions to restore your Shoreline home and ensure it stays safe for years to come.
Shoreline’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 Shoreline
Neglecting foundation issues can lead to significant damage to your home. If you’re in Shoreline, WA, you may notice signs like cracks in your floors, bowing walls, or sagging floors, which often indicate deeper structural concerns. Homeowners might also experience doors that stick, windows that won’t close properly, or visible gaps between walls and ceilings. These symptoms can all point to foundation shifts caused by soil movement, water damage, or natural aging. It’s important to address these issues before they escalate.
At TerraFirma, we provide foundation repair services in Shoreline, WA, with expert solutions designed specifically to address the root causes of foundation issues. Our process starts with a thorough inspection to evaluate the extent and source of the problem, allowing us to recommend one or more of our trusted foundation repair systems.
Foundation piers
Our push and helical piers are specially designed to stabilize and lift your foundation by transferring its weight to deeper, more stable soil. Helical piers work great in areas with known soil conditions, while push piers are ideal for locations with uncertain soil stability. Both options are minimally invasive and provide long-lasting solutions for your home in Shoreline.
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 is supported by professional installation, ongoing maintenance options, and transferable warranties, ensuring you have confidence and peace of mind in your home here in Shoreline.
Basement Waterproofing Shoreline
Dealing with a wet basement in Shoreline, WA? It’s more than just an inconvenience. Excess moisture can cause mold, mildew, structural damage, and even impact the air quality in your home. You might notice musty odors, stained walls, pooling water, or even efflorescence—the white, powdery substance that appears when water evaporates. Remember, even a tiny crack in your basement wall can turn into a significant pathway for moisture.
TerraFirma provides top-notch basement waterproofing solutions in Shoreline, ensuring your space stays dry, healthy, and functional, rain or shine.
Crawl Space Repair Shoreline
Crawl spaces in Shoreline, WA, are often neglected, but they play a vital role in your home’s structure and air quality. If left unattended, these spaces can become breeding grounds for mold, pests, and standing water. This not only leads to wood rot and unpleasant odors but can also create health risks for you and your family.
We understand the unique crawl space conditions in Shoreline, WA. That’s why TerraFirma offers specialized crawl space repair services tailored to tackle issues like moisture, mold, pests, and sagging floors with comprehensive solutions including 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 Shoreline 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 Shoreline
Damaged, cracked, or uneven concrete isn’t just an eyesore—it’s a safety concern. Issues like poor soil compaction, freeze-thaw cycles, erosion, and tree root growth can lead to these problems. That’s why homeowners in Shoreline trust us to swiftly and effectively repair their concrete slabs, sidewalks, patios, and driveways.
TerraFirma provides quick, efficient, and durable concrete leveling and repair solutions in Shoreline, 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. This non-invasive method is perfect for Shoreline, WA 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 Shoreline, WA for industrial buildings, warehouse floors, roads, runways, and rail lines—using the same high-quality systems we trust for residential properties.
Earthquake Retrofitting Shoreline, WA
Shoreline, WA is situated in an active seismic zone, making homes built before the updated building codes of the 1990s particularly vulnerable. Even a small earthquake can lead to a home shifting off its foundation or suffering significant structural damage.
TerraFirma’s earthquake retrofitting services help secure your Shoreline home to its foundation and strengthen its ability to withstand seismic events.
Earthquake retrofitting in Shoreline not only enhances your safety but can also help lower your insurance premiums and deductibles, plus make you eligible for coverage options that weren’t available before the upgrade.
How We Retrofit
Assessment & Planning
The retrofitting process starts with a thorough evaluation of your building’s current condition. Our skilled experts, including structural engineers and trained technicians, will inspect your home to pinpoint any weaknesses and suggest the best solutions for you.
Our evaluation looks at the foundation, walls, roof, and overall structure of your home. After that, our engineer will create a detailed retrofitting plan tailored to the results.
Foundation Bolting
Securing your home’s foundation is the next important step. Our technicians install anchor bolts to firmly connect your house to its foundation, helping to prevent lateral movement during an earthquake — essential for peace of mind here in Shoreline.
“Our process entails drilling into the foundation and inserting steel bolts, which our team then tightens to secure the structure. This enhances stability and increases resistance to seismic forces, ensuring your home in Shoreline is better protected.”
Adding Shear Walls
In Shoreline, WA, shear walls play a vital role in earthquake retrofitting by helping to evenly distribute seismic forces, ensuring your building stays safe and sturdy.
In Shoreline, WA, shear walls are typically made from sturdy materials like plywood and are installed in key areas of your home, especially in cripple walls. These walls offer extra support and stability, helping to minimize the risk of damage during an earthquake.
Bracing & Reinforcing
Next, we take essential steps to strengthen your home by adding steel braces and straps to critical areas. Our team installs these reinforcements to key structural components like the roof, walls, and floors. This process enhances your home’s stability, creating a solid framework that can better withstand seismic forces, important for the Shoreline area.
Securing Applicances
By securing your appliances, you can create a safer living space in Shoreline. It’s important to anchor items like water heaters and refrigerators, and our technicians can also help 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 Shoreline Home Today
At TerraFirma, we’ve spent over 25 years helping homeowners in Shoreline 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 Shoreline, WA has its own unique challenges, and that’s where TerraFirma comes in. Reach out to us today for a free in-home estimate, and find out how we can help enhance the safety, health, and value of your home for years to come.
Shoreline
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.
