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Company Awards
Elite Service Professional Award
By receiving no homeowner complaints and having more than five five star ratings on our profile, TerraFirma was awarded the... [Read more]
Home Advisor Top Rated Company
TerraFirma earned the "Top Rated" award from Home Advisor, a home improvement website that millions of homeowners trust to help... [Read more]
Inc. Fastest-Growing Private Companies in America
TerraFirma Foundation Systems ranked 1,1718 out of 5,000 companies on Inc. Magazine's Fastest Growing Private Companies in America. In Oregon,... [Read more]
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Basement Waterproofing, Crawl Space Encapsulation, Foundation Repair Conctractors in Sammamish!

Professional basement waterproofing, crawl space encapsulation, earthquake retrofitting, foundation repair & more! Call today for a FREE estimate!

Happy Customers Surrounding Sammamish, WA
Work Requests

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Sammamish Basement Waterproofing, Foundation Repair & more!

Discover TerraFirma, basement waterproofing, crawl space, and foundation professionals since 2005. We specialize in fixing wet basements, musty crawl spaces, settling foundation and even earthquake retrofitting! We promise exemplary customer service with our proven repair systems. We are members of the CleanSpace & Supportworks dealer networks, so we can offer our customers the absolute best in product quality, customer care and expert training for our technicians.

Call us today to learn more about our array of services in Sammamish:

  • Crawl space repair
  • Crawl space encapsulation
  • Basement waterproofing
  • Foundation repair
  • Earthquake retrofitting
  • And more!

Crawl space encapsulation in Sammamish

Is your crawl space musty? Could there be mold growth exposing your family to harmful allergens? Perhaps humid conditions have caused your wooden floor joists to rot and compromise the structural integrity of your Sammamish. If any of these issues are affecting you and your home, TerraFirma can help. We specialize in seamless crawl space encapsulation, as well as other crawl space repairs. Repairing your crawl space is top priority if you are aiming to improve the overall air quality and value of your investment. Our crawl space repair options in Sammamish:

  • Vapor barriers
  • Sump pumps
  • Exterior and interior drainage options
  • Crawl space waterproofing
  • Exterior downspout extensions
  • And more!

We want our customers to be aware of our process and involved in every decision. That's why we customize our crawl space solutions to fit your needs in Sammamish.

Basement waterproofing specialists

Similar to crawl space encapsulation, basement waterproofing will significantly increase the value of your home and indoor air quality. This will eliminate mold growth, harmful allergens and other potential dangers for the residents in your home. If you are tired of standing water in your basement, leaky basement walls and floors and musty odors, call TerraFirma today. We offer full-service basement waterproofing in Sammamish:

  • Drainage systems
  • Sump pumps
  • Wall coverings
  • Basement flooring
  • Basement dehumidifiers
  • Window wells & additional products

Call today to schedule your free basement waterproofing estimate!

Foundation services in Sammamish

TerraFirma provides foundation repair and other structural repairs for your Sammamish property. No more bowing walls and floors, cracked walls and floors, structural settlement or tilted chimneys. We provide Sammamish homeowners with trusted, professional installation of our foundation repair systems:

  • Foundation wall anchors
  • Foundation wall crack repair
  • Foundation pier systems
  • Crawlspace support posts
  • Reinforced spray concrete
  • And more!

Call today to schedule your FREE, no cost, no obligation estimate for foundation, crawl space and basement repair. We look forward to helping!

Work Requests From Sammamish, WA
in Sammamish
We had a drain pipe under the sink break, we need to have our vapor barrier replaced and the crawlspace deodorized.
Sahalee Dr E in Sammamish
We have a sloped kitchen floor. Need an quote to see how much it would cost to fix and level it.
in Sammamish
We have a crawl space and put in a new kitchen. Our kitchen floor seems to be bowed with the new weight and bouncy. Also we think our new pillar may be sinking as well which holds up second floor.
in Sammamish
I can see crack in foundation
in Sammamish
I have old an old vapor barrier in a ~1200 sqft crawlspace with loose fiberglass insulation and some signs of rodents. There are few puddles present both on top of plastic film and under it.
in Sammamish
We like to evaluation options to do sealed crawl space.
Serving the following Sammamish, WA zip codes
98074, 98075, 98074, 98075
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