About TerraFirma

We cover all of Oregon and Southwest Washington.

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Founded in 2005, TerraFirma has been a partner in keeping your home safe and sound structurally for over a decade. The foundation experts have gained a reputation of providing all customers with the best quality of service. Each employee is extensively trained and certified in foundation repair and basement waterproofing, so you can rest assured knowing you are in good hands.

At TerraFirma, we understand that foundation cracks, wet crawlspaces, and musty basements are stressful. We offer a free onsite estimate for all work that you may need to be completed, and we will work with you to customize a solution for your home.

TerraFirma stands by our promise of solving your foundation problem and basement needs in the most efficient manner.

How poor soil leads to uneven concrete

Wednesday, June 19th, 2019 by CJ Garcia


How poor soil leads to uneven concrete - Image 1

Concrete’s strength and versatility make it an ideal tool for home construction, but it’s vulnerable to breaking and cracking if the soil it’s rested on is compromised.

What Lies Beneath your broken concrete

Poorly compacted soil: When your home was built, the movement of soil around the building site results in poor compaction. Even when the replaced soil is compacted well, it’s never as stable as the original soil. Over time, this can cause voids to form and slabs to settle.

Dry soil: Another cause of soil failure is drought. During dry conditions or even just during periods of warm weather and low precipitation, the soil under your concrete will dry out and shrink, creating voids. The concrete above eventually cracks and sinks into these empty spaces; especially if any weight is placed on it.

Flooding: When the rains return, the water has an even easier pathway under the slab due to cracks and crevices left over from the dry period. And this wet, soft soil is just too weak to support the concrete above it. In the worst case, the soil erodes and washes away completely, leaving behind large voids that cannot support the weight of the concrete above.

Street Creep

As a homeowner, you don’t just have to worry about your own concrete slabs; you should be concerned with the slabs that make up the street that goes past your house.

During colder months, your street’s slabs contract, opening up the joints between them. Those joints then become filled with pebbles and other debris. Then, when the warm weather returns, the slabs expand again – only the joints that were designed to absorb this expansion are now filled with material that won’t compress. This leaves the expansion pressure nowhere to go except up your driveway. This “street creep,” as it is known, exerts incredible pressure on your home and can cause all sorts of problems.

The concrete repair solution

In the past, repairing concrete was such a difficult problem that homeowners would pay to excavate the damaged slab and repour new concrete. Fortunately, TerraFirma’s PolyLevel foam technology can save you time and money by leveling out your uneven concrete typically within just a few short hours.

 

our service area

We serve the following areas

  • Adams
  • Adrian
  • Arock
  • Athena
  • Baker City
  • Bates
  • Boardman
  • Bridgeport
  • Brogan
  • Burns
  • Canyon City
  • Cove
  • Crane
  • Dayville
  • Diamond
  • Drewsey
  • Durkee
  • Echo
  • Elgin
  • Enterprise
  • Fields
  • Frenchglen
  • Haines
  • Halfway
  • Harper
  • Helix
  • Heppner
  • Hereford
  • Hermiston
  • Hines
  • Huntington
  • Imbler
  • Imnaha
  • Ione
  • Ironside
  • Irrigon
  • Jamieson
  • John Day
  • Jordan Valley
  • Joseph
  • Juntura
  • Kimberly
  • La Grande
  • Lexington
  • Long Creek
  • Lostine
  • Meacham
  • Milton Freewater
  • Monument
  • Mount Vernon
  • North Powder
  • Nyssa
  • Ontario
  • Oxbow
  • Paulina
  • Pendleton
  • Pilot Rock
  • Prairie City
  • Princeton
  • Richland
  • Riley
  • Riverside
  • Seneca
  • Spray
  • Stanfield
  • Summerville
  • Sumpter
  • Ukiah
  • Umatilla
  • 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
10111 S Tacoma Way Suite D5
Tacoma, WA 98499
1-253-777-0712


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