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Products & Services

Basement Waterproofing
Waterproof Wall Products
DryTrak Basement Water Control System
Basement Dehumidifier
Sump Pump Solutions
Triplesafe Sump Pump
SuperSump Sump Pump
UltraSump Sump Pump
Interior Drainage Systems
Waterguard® Drainage System Drytrak®
Trench Drain WaterGuard®: Iron Ochre System (IOS)
Flowguard Drain
Well duct Window Well Drain
Warrantied Products & Solutions

Foundation Repair
Pier Systems
Push Piers
Slab Piers
Helical Piers
Smart Jack Crawl Space Support Posts
Foundation Wall Repair
Geo-Lock Wall Anchors
Powerbrace Basement Wall Repair System
CarbonArmor Reinforcing Basement Wall System
Bowing Foundation Wall Repair
Concrete Lifting

Concrete Repair
Concrete Driveway Repair
Concrete Pool Deck Repair
Concrete Walkway Repair
Concrete Patio Repair
Concrete Leveling & Lifting
Mudjacking Alternatives
NexusPro Cracked Concrete Repair

Earthquake Retrofitting

Air Purifier

Free Estimates & Inspections

Trusted Basement Waterproofing Company in Sandy, OR

Jason seemed like a veteran in the industry and made my comfortable when describing the project using language we could...

Testimonial from Diego & Genia from Sandy , OR

Happy Customers Surrounding Sandy, OR

Testimonials

Reviews

Click the icons to see what our customers had to say.

Testimonials from our customers in Sandy, OR Ron H. SE Bornstedt Rd.

Adam and TerraFirma went above and beyond to make sure I was satisfied with every aspect of the project.

Reviews from our customers in Sandy, OR

5.0/5
Kurt C. Kurt C.

5.0/5
Jeanine C. Jeanine C.

Stephen is always on time, calls an hour or so before to give us a closer idea of arrival time. Knowledgeable to explain techniques, options we may have a close approximate costs of needed professional repair required to improve our devastation and prevent further/repeat problems. Feel welcome to let us visit with possible clients and share answers to the questions.

5.0/5
Janet N. Janet N. SE Condor Pl

4.0/5
Sharon Sharon Gresham, OR

5.0/5
Sandy T. Sandy T. SW Berryessa Pl

Repair 12 floor joist footings and supports with smart jacks and additional support beam. It was great, the guys that came to do the work were very professional and kept the area clean.

5.0/5
Michael F. Michael F. Se Redhawks Lane

I'm very glad I went with TerraFirma. My crawl space is up to date and I can now sleep knowing that there won't be any water in my crawl space again!

5.0/5
Marla V. Marla V.

4.8/5
Toby F. Toby F. SE Meadows Ln.

Chad & Gage performed in a very efficient and professional manner. Answered all my questions, explained the process to my understanding and got right to the job. Even though my job was very small, I felt they were treating me as they would a very large customer. My hats off to both of them. I may be able to refer them to some of my neighbors who are experiencing similar problems to mine.

4.2/5
Ric C. Ric C. SE Idyllwild CT

After initially talking to Chris about the dimpled barrier that directs water to the sump pump that was installed, I thought that it would fit more closely to the ground. It sticks up in spots and does not hug the ground as I thought. I talked to Drew about this and he said it would be OK. They removed the existing vapor barrier from where the dimpled material was installed saying that it takes the place of the old visqueen.

5.0/5
Norm E. Norm E. Camas, WA

I appreciated receiving the booklets on foundations and crawl space. They made me very confident that TERRAFIRMA was the best company to meet my crawl space needs.

Reviews From Sandy

By Jason

Sandy, OR

Friday, Jun 17th, 2022

View Details
By Barry S.

Sandy, OR

Wednesday, Aug 10th, 2022

View Details
By Keri V.

Sandy, OR

Thursday, Sep 22nd, 2022

View Details

See All Reviews

Structural repair, crawl space repair, basement waterproofing, & more

Have wet basement walls, a cracked foundation, crawl space humidity, sinking concrete slabs, or other issues with your Sandy, OR home? TerraFirma provides expert foundation repair, crawl space repair, concrete repair, and basement waterproofing solutions that restore the home's performance and image, and value overall.

We specialize in customizable solutions adaptable for all Sandy, OR homes! Call 1-866-486-7196 or click below to schedule a free, no-obligation service estimate today!

Get A FREE Quote!

Foundation repair solutions in Sandy, OR

Even the smallest of structural issues can worsen to cause damage to the rest of your Sandy, OR home. TerraFirma has reliable Supportworks products and solutions that not only restore your foundation but prevent ongoing damage in the future.

Our foundation repair services include:

Pier systems
Structural repair services
Foundation wall repair systems

Concrete repair
And more!

Have you noticed structural settlement? Cracks within the foundation? A tilted Chimney? We have solutions for these issues and more!

Call or email us today to schedule a free consultation with a system design specialist, who will provide an initial foundation assessment and walk you through the entire repair process.

Restore & encapsulate your crawl space

Interested in crawl space solutions that fix water build-up, humidity, mold growth, and structural issues and provide added storage space and protection? The crawl space repair system from TerraFirma is the solution! Not only does TerraFirma restore your Sandy, OR crawl space, they also seal the below-grade space to protect it from the elements and for added storage space!

Our crawl space repair & encapsulation services include:

Crawl space sump pumps
Crawl space vapor barriers
Crawl space access wells

Downspout extensions
And more!

Get A FREE Quote!

Wet basement repair products & solutions

A wet basement can cause serious issues with the overall structure of your Sandy, OR home. We specialize in basement waterproofing solutions that repair damaged below-grade spaces and provide added water protection.

Our basement waterproofing services include:

Waterproof wall products
Basement crack repair
Basement dehumidifier
Basement sump pump

Interior drainage solutions
Window well drains
Downspout extensions
And more!

Interested in patented Basement Systems products and services that do more than provide temporary fixes? Our warrantied solutions are just what you need for long-term solutions!

Concrete repair contractors

Sinking, cracked, and weak concrete looks as unappealing as dangerous, as they are a serious falling hazard. TerraFirma isn't interested in providing services that will make your Sandy, OR home messy and end up costing you more. That is why we offer our polyurethane concrete solution, NexusPro, cracked concrete repair. This innovative concrete repair solution applies quickly to produce durable, long-lasting results without the mess and stress.

Our concrete repair services include:

Concrete leveling
NexusPro cracked concrete repair
Concrete sidewalk repair
Concrete driveway repair

Concrete pool deck repair
Concrete patio repair
Mudjacking alternatives
And more!

Wet basement, crawl space, foundation repairs & more

Since 2005, TerraFirma has offered reliable foundation repair, crawl space repair, basement waterproofing, concrete repair, earthquake retrofitting services that restore Sandy, OR homes and provide lasting protection.

Call 1-866-486-7196 or click below to schedule a FREE, no-pressure service estimate for any of our services in Sandy, OR!

Get A FREE Quote!

Job Stories From Sandy, OR

Settling Sands in Florence

In the northwest we have a diverse climate, terrain and geography. All of these factors affect the types of soils that we have under and around our homes. Two problematic soils that are abundant in Oregon and Washington are clay soils and sand soils. Clay soils are problematic because they are highly expansive and change volume in relation to rainfall or lack of rainfall. Sandy soils too have their concerns because they are easily washed out from under homes during a rainy period, leaving voids for the house to sink in to. Sandy soils are found at the beach, and home owners Lee and Barbara G. of Florence were experiencing soil wash out and a settling foundation.

After inspection by Patrick Dunn, a 6 push pier, upgraded C6 steel system was installed around the settling area of the foundation. By hydraulically pushing the piers through the sand layer to load bearing soil or bed rock, we were able to find a solid foundation to anchor the home to, permanently stabilizing the foundation.

Lee and Barbara now have piece of mind that their home will cease to settle any further and will do so through the tests of time.

Push Piers Stabilize Sinking House in Sandy, OR

David H. has seen his home, year after year, sink and settle. The combination of improperly packed soil around the perimeter and heavy rain fall has created voids under the home which the foundation has settled in to. This is a common event in many homes in the greater Portland area. To the concern of the homeowner, he was worried his home would continue to settle until the foundation had completely failed and found himself with a much larger problem. The solution is simple and it starts with a phone call to TerraFirma.

Adam Lounsbury, upon inspection, noticed significant settlement of roughly 2 inches in one corner of the home. 8 push piers were installed around said corner to permanently stabilize the settlement and restore the strength to the foundation. After proper geo-technical inspection and a stellar diagnosis by Adam, David's home was ready for stabilization. By connecting each pier to a centralized hydraulic system, we were able to achieve proper stabilization evenly throughout the corner or the home. David now has a permanently stabilized foundation, a 75 year warranty and regained piece of mind.

CCB# 173547
WA: TERRAFR931LH