Free Estimate
Financing
Commercial Solutions
Maintenance
Bill Pay
TerraFirma
Portland Office
13110 SW Wall St.
Portland, OR 97223
Phone:
866-486-7196
Hours: Monday – Friday, 8am-5pm
Portland’s Top Rated Foundation & Basement Contractors
Foundation cracks? Support posts sagging? Walls bowing? With TerraFirma‘s team of experts we can fix it!
We want to make your home dry, stable, and safe. TerraFirma has waterproofed basements for over 20 years from Lake Oswego to Beaverton, and Hillsboro to Gresham. Backed by the best warranty in the business.
Some of the most requested Foundation
Services In Beaverton, Lake Oswego, & Clackamas
Portland’s Top Rated Foundation & Basement Contractors
Portland’s unique soil composition, often a mix of clay and silt, combined with our region’s heavy rainfall, creates a perfect storm for foundation issues. These conditions lead to soil expansion and contraction, causing homes throughout Portland, and in surrounding areas like Beaverton, Gresham, and Hillsboro, to experience foundation settling, cracking, and even buckling.
Seasonal shifts in moisture content cause the soil beneath Portland homes to expand when wet and shrink when dry. This constant movement puts significant stress on foundations, especially in older neighborhoods within Oregon City and Lake Oswego, often resulting in noticeable cracks and uneven floors.
Trusted
Foundation Repair
Across Portland
If you’ve noticed foundation cracks, bowing walls, or dampness in your basement or crawl space in areas like Beaverton, Gresham, and Hillsboro, you’re not alone. These issues are common due to Portland’s challenging soil and weather conditions.
In our free evaluations, we can assess:
- Sloping floors
- Hairline cracks in your foundation
- Water damage or dampness
- Cracks in brick or sidewalk
- Musty odors or mold growth
Basement Waterproofing &
Vapor Barriers
for Portland Homes
The high water table and frequent heavy rains in the Willamette Valley lead to significant hydrostatic pressure against foundation walls, causing basements from Tigard to Beaverton and the surrounding area to experience leaks and persistent moisture inside the home.
Call us if you’re experiencing:
- Visible water puddles or standing water
- Increased allergies or respiratory issues
- Water stains or damage to brick, floors, or support joists
- Unwanted vermin and pests
- Unusable space in your basement or crawlspace
Hey Portland,
It’s self-care… but for your home.
Stay safe, dry, and level with TerraFirma.
Portland
Homeowners Frequently Asked Questions
What types of cracks in my foundation or basement should I be concerned with?
Homes in the Portland greater metro area are particularly susceptible to cracks in basements. Common symptoms of this problem to stay alert include 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 in Portland?
Whether your home is in Portland, Aloha, or even Hillsboro, when 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.
How to stop bad smells and air coming up from my drain?
Designed to block unwanted ground air and gasses from entering your basement and home, TrenchLock™ is an 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 are the soil conditions in Portland and Tigard?
Certain types of soils in the Pacific Northwest absorb water and expand, exerting significant pressure against the foundation. This might cause your foundation to settle or sink. Also common to the region are Consolidating Soils that shrink and compact. Houses built on hills or with a hot, southern-facing exterior are particularly susceptible
How to repair damaged concrete in Portland?
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’s the best way to repair concrete?
The NexusPro solution 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 in Portland, Gresham and throughout the Pacific Northwest.
What are common crawl space problems in Portland?
The most common issues found in crawl spaces in cities like Portland and Gresham are related to moisture in the crawl space. This moisture is a breeding ground for trouble, causing damage to organic material such as wood and unpredictable humidity which can mean mold growth. The air under your home impacts the air you breathe inside your home. Common crawl space problems include sagging floors, musty odors, and uneven floors.
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 unique products and services keep out destructive moisture while greatly improving your indoor air quality. In most homes, TerraFirma can even turn your crawl space into a clean, dry area suitable for storage.
What’s the right drain for your needs?
Scheduling a free estimate with your TerraFirma System Design Specialist is the first step toward a permanent fix for your home. We take careful measurements, inspect its basement or crawlspace, check the drain system, observe the surrounding terrain and any other influencing factors.
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.
Portland, Or
Homeowner
REVIEWS
Don’t take our word for it – see what our clients have to say.
From Lake Oswego to Beaverton, Gresham to Clackamas, and throughout the Portland area, our work speaks for itself.
Proudly serving
oregon & washington
communities Coming soon to Boise and the Treasure Valley area
Enter your Zip Code to be redirected to
your local Service Area
Tacoma, WA Olympia, WA Vancouver, WA Portland, OR Roseburg, OR Salem, OR Eugene, OR Medford, OR Bend, OR Boise, ID 
