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Keep Water Out of Your Basement with TerraFirma

Basement Waterproofing Company in Portland, Vancouver & Tacoma

Quality products and expert services from OR & WA's experts

From carpets and walls to irreplaceable valuables, water in your basement ruins everything it touches. A home with a wet basement is also one of the biggest red flags to prospective home buyers. The good news: TerraFirma offers a unique line of waterproofing products and services that offer the best basement waterproofing solutions available to help solve your basement problems fast. Since 2005, our team has helped thousands homeowners throughout Portland, Vancouver, Tacoma, Salem, Eugene, Roseburg, Renton, Hillsboro, and surrounding areas, keep their basements dry in any storm.

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. Call us today at 1-866-486-7196. As a local Better Business Bureau accredited basement waterproofing company, we offer free inspections and estimates to give you peace of mind and safeguard your home.

Our basement waterproofing solutions last a lifetime. Guaranteed.

We stand behind our work. That's why our systems come with a lifetime warranty that's transferable to the next owner, giving homeowners and buyers confidence that their home is protected for the long term. Our basement waterproofing solutions include:

Six great reasons to choose us

  1. Quality products: TerraFirma utilizes the best available products specifically engineered for permanent basement waterproofing solutions.
  2. Fast installations: Our systems can usually be installed in just a few days with minimum disruption to you and your home.
  3. Experienced crews: Our in-house, certified installers specialize in waterproofing basements. We take pride in every installation we complete.
  4. Cost-effective system: Our basement waterproofing system can be customized to fit your budget, and it costs about half as much as an exterior waterproofing system. Our system works for both finished and unfinished basements.
  5. Locally-owned and operated company: TerraFirma is a family-owned, home-grown company based right here in Oregon. We have three offices in the Northwest serving Oregon and Washington.
  6. Free inspection and system design: Our expert team of System Design Specialists will evaluate your home and property to provide you with a custom designed scope of work to meet your needs.

Frequently Asked Questions

Is a dehumidifier essential for basement waterproofing?

Yes. TerraFirma's powerful, energy-efficient dehumidifiers dry your basement by extracting several gallons of water per day while filtering mold spores and dust.

What are footing drains?

Footing drains are installed just outside the foundation of your home's basement. These are thick pipes with holes designed to let water flow inside. A layer of stones is put on top of the drainpipe to prevent soil backfill from blocking the pipe.

However, with time, backfill can seep through the stones and clog the pipe. The only way to clean the footing drain is by digging up the ground and flushing the pipe, which can be quite expensive. Therefore, it is essential to ensure that the footing drain is functioning correctly to prevent any basement flooding.

What causes efflorescence?

  • Salts: Basement walls are generally made with a variety of brick containing limestone clay or sand. These items are full of natural minerals that contain salt. The salt is dissolved by water in your basement walls.
  • A Water Source: Water can build up outside your foundation, resulting in hydrostatic pressure. This pressure then pushes that moisture into your basement.
  • An Entry Point: The water must be able to enter the basement — whether that be through the floor or the pores in the concrete.

What is cove joint seepage?

Cove joint seepage occurs when hydrostatic pressure forces water into your basement through wall cracks, causing water leaks where your walls and floor meet.

What is hydrostatic pressure?

Hydrostatic pressure is the water pressure that pushes against your home. If not addressed, this pressure, along with soil settling and seasonal changes, may cause cracks in your basement walls and concrete foundation.

Looking for a price? Get a no cost, no obligation free estimate.

our service area

We serve the following areas

  • Adams
  • Adrian
  • Arock
  • Athena
  • Baker City
  • Bates
  • Bridgeport
  • Brogan
  • Burns
  • Cove
  • Crane
  • Drewsey
  • Durkee
  • Elgin
  • Enterprise
  • Haines
  • Halfway
  • Harper
  • Helix
  • Hereford
  • Huntington
  • Imbler
  • Imnaha
  • Ironside
  • Jamieson
  • Jordan Valley
  • Joseph
  • Juntura
  • La Grande
  • Lostine
  • Meacham
  • Milton Freewater
  • North Powder
  • Nyssa
  • Ontario
  • Oxbow
  • Pendleton
  • Pilot Rock
  • Prairie City
  • Richland
  • Riverside
  • Summerville
  • Sumpter
  • Ukiah
  • Union
  • Unity
  • Vale
  • Wallowa
  • Westfall
  • Weston
Our Locations:

TerraFirma Foundation Systems
761 NE Garden Valley Blvd.
Roseburg, OR 97470
1-866-486-7196


TerraFirma Foundation Systems
13110 SW Wall St
Portland, OR 97223
1-541-229-4049


TerraFirma Foundation Systems
10111 S Tacoma Way D5
Tacoma, WA 98499
1-253-201-1447


TerraFirma Foundation Systems
2001 NE 117th ST
Vancouver, WA 98686
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