Effective radon testing & mitigation with TerraFirma

Radon Testing by TerraFirma

Reliable radon testing keeps your home & family safe

TerraFirma's trusted radon professionals provide radon testing and radon mitigation for homeowners throughout Oregon. Radon gas is produced through the breakdown of uranium in the soil or water around a home. Radon gas enters homes through the foundation, and is undetectable without proper testing.

TerraFirma can provide you with services from a certified Radon Gas Measurement Specialist, who will perform a Continuous Radon Monitor test in your home. This test is by far the most accurate radon test in the industry and is capable of providing reliable results within 48 hours. Call TerraFirma today to schedule radon testing or a free estimate for radon mitigation in your home.

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Continuous radon monitor in Seattle home

Are you at risk from radon? A continuous radon monitor can accurately measure the concentration of radon gas in your home to determine if mitigation is necessary.

Radon Testing Steps:

  • Step 1: Contact us by calling or e-mailing us online. Our Radon Gas Measurement Specialist will coordinate a good time to stop by your house to set up the Continuous Radon Monitor (CRM).

  • Step 2: Our Radon Gas Measurement Specialist will install the CRM. This visit is relatively quick, during which time the specialist makes sure that the CRM is placed in the best location in your house. The specialist will also make sure you're informed of the required conditions for accurate testing.

  • Step 3: The specialist will return after a minimum of 48 hours have passed. During this second meeting, the specialist will print your radon testing results right there on the spot. This process should take between 10 and 15 minutes.
Certified radon contractor in Seattle

Depending on your radon test results, our specialists can decide if further action is required in your home. We will install a customized radon mitigation system

TerraFirma also provides HUD multi-family radon testing and mitigation. HUD's multi-family radon policy requires that all radon testing and mitigation be performed by a certified radon professional.

Call today for a radon testing appointment. We offer free quotes to have a radon mitigation system installed. We service Portland, Eugene, Medford and other surrounding areas throughout Oregon.

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
1-541-204-4660


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