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Products & Services

Basement Waterproofing
Waterproof Wall Products
DryTrak Basement Water Control System
Floodring Water Heater Protection
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

Your leading Cowlitz County, WA Wet Basement & Foundation Repair Company

We chose TerraFirma over other companies because of their professionalism!...
Happy Customers Surrounding Cowlitz County, WA

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Reviews From Cowlitz County
Testimonials From Cowlitz County
Chris is an expert and deserves a raise.
Testimonial by Daniel R. from Kelso, WA
We would recommend your company indefinitely and are glad we chose TerraFirma.
Testimonial by Wellington A. from Longview, WA
Josh was excellent. Knew his business and understood our issues. Gave us all our options. I would recommend...
Testimonial by William & Linda S. from Longview, WA

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 Cowlitz, WA 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 Cowlitz, WA homes! Call 1-866-486-7196 or click below to schedule a free, no-obligation service estimate today!

Foundation repair solutions in Cowlitz, WA

Even the smallest of structural issues can worsen to cause damage to the rest of your Cowlitz, WA 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 Cowlitz, WA 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!

Wet basement repair products & solutions

A wet basement can cause serious issues with the overall structure of your Cowlitz, WA 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
  • Water heater protection
  • 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 Cowlitz, WA 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 Cowlitz, WA 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 Cowlitz, WA!

Job Stories From Cowlitz County, WA
Concrete Leveling for Slanting Slabs Around Pool Kalama, WA

    It's hard to imagine a better summer day than friends, family, BBQ and a pool party. Think about this. After the cement pool is poured and the water is filled, you can imagine how heavy a structure like that must weigh. Home and pool owners Darren and Adriane O. noticed a slanting of the slabs around their pool and wanted to level this issue without massive destruction around the pool area. It is almost summer after all, and they wanted to take advantage of their pool. After searching the internet, they discovered that TerraFirma could help them out.

    TerraFirma Concrete Leveling was the solution they discovered. What it is, is a light weight poly urethane with a high capacity and expansive properties. A penny sized hole is drilled in the sinking slab with the void underneath and the foam is pumped into the void. It expands, stabilizes the slab and with measurable lift. With next to no destruction and curing quickly, Darren and Adriane O. can enjoy their pool all summer long worry free.

Serving the following Cowlitz County, WA zip codes
Longview 98632, Kelso 98626, Woodland 98674, Silverlake 98645, Toutle 98649, Kalama 98625, Castle Rock 98611, Ariel 98603, Ryderwood 98581, Cougar 98616, Carrolls 98609