Foundation, Crawlspace & Concrete Contractors in Damascus, OR
Terrafirma in Damascus, OR
At TerraFirma, we focus on safeguarding and improving the structural strength of homes in Damascus and throughout Oregon and Washington. For years, we’ve been helping local homeowners tackle the distinctive climate and soil challenges that come with living in this beautiful region.
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 Damascus home and keep it safe for years to come.
Damascus’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 Damascus
Foundation issues can lead to significant damage to your home if not taken care of. Common signs to watch for include cracks in the floors, bowing walls, and sagging floors, which often indicate deeper structural concerns. Homeowners in Damascus, OR may notice doors that stick, windows that are difficult to close, or gaps appearing between the walls and ceilings. These issues might suggest that your foundation is shifting due to soil movement, water damage, or simply age.
At TerraFirma, we specialize in foundation repairs in Damascus, offering expert solutions designed specifically for the unique issues affecting your home. Our process starts with a thorough inspection to identify the root cause and extent of your foundation concerns. From there, we’ll recommend one or more of our trusted foundation repair systems:
Foundation piers
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 predictable soil conditions, while push piers are great for locations where soil stability is less certain. Both options are minimally invasive and provide lasting solutions for your foundation needs in Damascus.
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, convenient maintenance options, and transferable warranties, ensuring you feel confident and at ease in your Damascus home.
Basement Waterproofing Damascus
Dealing with a wet basement in Damascus, OR? It can lead to mold, mildew, structural issues, and poor air quality in your home. You might notice musty odors, stained walls, puddles of water, or a white, powdery substance called efflorescence that appears as water evaporates. Remember, even a tiny crack in your basement wall can turn into a significant gateway for moisture.
TerraFirma provides top-notch basement waterproofing solutions in Damascus to ensure your space stays dry, healthy, and functional—regardless of the weather.
Crawl Space Repair Damascus
Crawl spaces are often forgotten, but they play a vital role in your home’s structure and air quality here in Damascus, OR. If left unattended, a neglected crawl space can become a breeding ground for mold, pests, and standing water. These issues can cause wood rot, unpleasant odors, and even respiratory problems for those living in your home.
We understand the unique crawl space conditions in Damascus, OR. That’s why TerraFirma offers specialized crawl space repair services to tackle issues like moisture, mold, pests, and sagging floors with comprehensive encapsulation, effective drainage solutions, 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 Damascus 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 Damascus
Damaged, cracked, or uneven concrete isn’t just an eyesore—it’s a safety risk. These issues can arise from poor soil compaction, freeze-thaw cycles, erosion, or tree roots. Residents of Damascus trust us to swiftly and effectively repair their concrete slabs, sidewalks, patios, and driveways.
TerraFirma provides quick, clean, and durable concrete leveling and repair services in Damascus, OR, using advanced polyurethane foam injection and crack sealing techniques.
PolyLevel® Concrete Lifting
PolyLevel utilizes expanding polyurethane foam to lift and stabilize concrete slabs. This non-invasive method is perfect for residents of Damascus, OR who need a reliable solution 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 Damascus, OR for industrial buildings, warehouse floors, roads, runways, and rail lines—using the same high-quality systems we trust for residential properties.
Earthquake Retrofitting Damascus, OR
Much of the Pacific Northwest, including Damascus, OR, is located in an active seismic zone. Homes built before the updated building codes from the 1990s are particularly at risk. Even a minor earthquake can lead to damage that shifts a home off its foundation or causes significant structural issues.
TerraFirma’s earthquake retrofitting services help secure your Damascus home to its foundation and strengthen its ability to withstand seismic events.
Upgrading your home with earthquake retrofitting in Damascus not only enhances safety but can also lower your insurance premiums and deductibles. Plus, you might qualify 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. 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 includes a thorough inspection of the foundation, walls, roof, and overall structure. Following this, our engineer will create a detailed retrofitting plan tailored to the results.
Foundation Bolting
Strengthening the foundation is the next step in this process. Our technicians install anchor bolts to secure your home to its foundation, helping to prevent lateral movement during an earthquake.
Our process in Damascus involves drilling into the foundation and inserting robust steel bolts. The team then tightens these bolts to strengthen your structure, boosting its stability and resistance to seismic forces.
Adding Shear Walls
In Damascus, OR, shear walls play a crucial role in earthquake retrofitting by helping to distribute seismic forces and protect buildings from collapsing.
Shear walls are often made from plywood or other sturdy materials, strategically installed in key areas of your home, especially in cripple walls. These walls enhance support and stability, helping to minimize the risk of damage during an earthquake in Damascus.
Bracing & Reinforcing
Next, we strengthen essential areas of your home in Damascus with durable steel braces and straps. Our team carefully installs these reinforcements on key structural components like the roof, walls, and floors. This crucial step enhances your home’s overall stability, providing a solid framework designed to withstand seismic forces.
Securing Applicances
By securing appliances, you can create a safer home for everyone in Damascus. It’s important to anchor items like water heaters and refrigerators. Our technicians will also install safeguards 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 Damascus Home Today
At TerraFirma, we’ve spent over 25 years helping homeowners in Damascus 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 Damascus, OR has its own unique needs—and TerraFirma is here to tackle every challenge. 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.
Damascus
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.
Why is
TerraFirma
the Top Rated Foundation Expert in Oregon?
From Portland to Beaverton, Salem to Lake Oswego, and all across the region, our experts consistently deliver durable, reliable foundation, basement, and crawlspace solutions. Check out these homeowner stories from your neighbors.