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TerraFirma
Foundation Repair in Tacoma, WA
Built for Tacoma homes facing Puget Sound moisture, hillside soils, wet winters, and long-term foundation movement.
WHAT CAUSES FOUNDATION PROBLEMS IN TACOMA HOMES?
South Puget Sound conditions shape Tacoma homes: heavy winter rainfall, pockets of clay-rich soil, sloped lots, older crawl spaces, and persistent groundwater near low-lying areas. As soil becomes saturated through long wet seasons and then dries during warmer months, foundations can settle, bow, or shift over time.
Common foundation issues throughout Tacoma include:
- Cracked walls and uneven floors
- Basement moisture, seepage, and wall movement
- Crawl space humidity, settlement, and sagging supports
- Soil movement caused by heavy Puget Sound rainfall
- Aging foundations in older Pierce County homes
Since 2005, TerraFirma has helped homeowners throughout Tacoma diagnose and repair foundation problems caused by Pacific Northwest soil, groundwater, and weather conditions.
Why do Tacoma Homes develop foundation problems?
Foundation concerns in Tacoma are closely tied to Puget Sound rainfall, hillside grading, mixed clay and fill soils, and the age of many neighborhood homes.
Across Tacoma, saturated soils, older drainage systems, and sloped properties can place steady pressure on foundations, basement walls, and crawl space supports. When soils expand during wet months and tighten during drier periods, that movement can create settlement and structural stress.
In addition, many older homes in Tacoma neighborhoods were built before current drainage, seismic, and crawl space standards, making them more vulnerable to movement over time.
Tacoma’s Soil &
Geology
Many foundation issues in Tacoma can be traced to South Puget Sound soil behavior, groundwater, older grading, and hillside drainage conditions.
Typical causes of such problems are:
- Soil composition with clay, glacial till, and fill soils that can shift with moisture
- Difficult drainage on sloped lots in North Tacoma, South Tacoma, and hillside areas
- Perched groundwater, compacted fill, and poorly draining soil layers
- Saturated soil due to Tacoma’s long wet season and Puget Sound moisture
- Constant hydrostatic pressure against foundations and basement walls
This can lead to foundation settlement, cracking, or basement wall movement in Tacoma homes.
Tacoma’s Rainfall & Water Pressure
Tacoma’s moisture-heavy climate can put continual stress on foundations for much of the year.
Some of the elements that cause foundation issues include:
- Frequent rainfall and extended damp periods from fall through spring
- Sustained Puget Sound moisture and stormwater runoff
- Wet soil pushing against foundations via hydrostatic pressure
- Dry-season soil contraction after months of saturation
- Continual expansion and contraction under the foundation of the home
Over time, these moisture cycles can contribute to structural movement in homes throughout Pierce County.
Tacoma’s Housing Stock
Older properties across Tacoma are often susceptible to structural and foundation concerns, especially in neighborhoods with aging crawl spaces, basements, and drainage systems.
The following problems are frequently encountered within aging properties in Pierce County:
- Foundations with inadequate depths based on current standards
- Decayed crawl space support structures and wooden structures
- Poor drainage systems
- Insufficient moisture-proof protection
- Susceptibility to settling and movement
As a result of such defects, it is common to see problems like sagging floors and cracked walls develop within the aging property.
Tacoma’s Seismic Context
Homes in Tacoma and Western Washington face seismic risk from the Cascadia Subduction Zone and regional fault activity.
Potential vulnerabilities include the following:
- Decaying building foundations and framing systems
- Foundation settlement or shifting
- Un-reinforced crawlspaces
- Old homes constructed before modern earthquake building codes
- Cracked walls or structural movement
While foundation repair is not the same as earthquake retrofitting, ensuring that an old structure remains stable through foundation repair work can go a long way toward improving its performance during an earthquake.
 Foundation Reinforcement |
 Foundation Anchor |
 Wall Stabilization/ Restoration Issue |
 Vapor Barrier |
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|---|---|---|---|---|
| Cracks in Basement Floor |  |
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| Lifting and Stabilizing Foundation | |
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| Reinforce Cracking or Bowing Walls | |
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| Stabilize minor wall racks or bowing under 2″ | ||||
| Straighten leaning walls | |
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| Restore structure to crumbling walls | |
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| Seal leaking walls | |
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| Wet or stained walls | |
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| Efflorescence | |
Common Signs of Foundation Problems in Tacoma Homes
Foundation issues in Tacoma may begin as small warning signs that slowly escalate into more serious concerns. Heavy rainfall, hillside drainage, clay pockets, and damp crawl spaces can put continuous stress on foundations, basement walls, and support systems.
These problems are common for homeowners across Tacoma; cracks, slanted floors, stuck doors, damp basements, or sagging crawl spaces may point to foundation movement before significant damage is done.
Foundation Settlement
In case the soil under the foundation gets compressed or moves in an unequal manner, it leads to differential settling or sinking of different areas of the foundation. Differential settlement often causes sloping of floors.
Cracks in Foundation and Basement Walls
The common indicators of this issue include horizontal or stepped cracking of the foundation wall, diagonal cracking at the corners of the walls, and deterioration of the walls with bulging.
One should also consider checking for spalling and delamination.
Jammed Windows and Sticking Doors
The following symptoms might point to problems with the foundation:
- Sticking and jamming doors or windows;
- Non-functioning locks on doors;
- Door openings not being square;
- Diagonal cracking in corners above windows and door openings.
Tilting Chimneys
Tilted chimneys with cracks at the point of contact with the house’s foundation. Damage to the roof where there is contact between the chimney and roof, or any gaps between the chimney structure and the house walls which may have been sealed using mortar, foam, or caulking materials.
Cracked and Uneven Sidewalks & Driveways
Cracking and sinking are common problems with driveways in our area. Soil problems under concrete driveway slabs typically go hand in hand with concrete walkway cracking and raised walkways.
Stained Basement Walls + Efflorescence
The water stain marks left by water droplets on concrete walls happen due to mineral accumulation of water. The efflorescence stain is a gray or white substance on the walls.
Basement wall discoloration in shades of yellow, orange or black should be watched out for since they indicate moisture problems.
SEE WHAT YOUR NEIGHBORS
HAVE TO SAY ABOUT US!
At TerraFirma we take pride in our work! We are trusted and referred by homeowners since 2005, to provide solutions for home foundations, basement and crawl space moisture, concrete leveling, and earthquake retrofitting.
Foundation Repair Solutions for Tacoma homes
Foundation Piers
Helical piers are commonly used on Tacoma homes built on shifting clay, fill, or moisture-sensitive soils where traditional shallow foundations can no longer maintain stable support.
Wall Stabilization
Wall stabilization systems help protect Tacoma basements from inward wall movement caused by hydrostatic pressure during the Pacific Northwest rainy season.
Settling Front Steps Restored in Lakewood, WA
An owner of a split-level house built in 1991 in Lakewood, Washington requested assistance from TerraFirma due to settling front steps, which posed a risk of accidents and were unattractive.
TerraFirma found that a nearby downspout was allowing water to run alongside the concrete slab causing soil washing out under the concrete steps leading to their settling.
PolyLevel® polyurethane foam was injected into the foundation to lift up and support the concrete steps. In addition, NexusPro® was used to seal the existing cracks.
Foundation Repair in Pierce County, WA
The homeowner in University Place, Pierce County, WA turned to TerraFirma for a crawl space inspection due to fears of water damage.
Upon inspection, our System Design Specialist identified a faulty support post which was floating almost five inches off the ground, thereby failing to provide adequate support to the floor system. The void left by the support post had been filled by debris that had moved over time.
TerraFirma proceeded to remove the damaged support post and install a SmartJack® support system made from durable galvanized steel which can handle loads exceeding 60,000 lbs.
SCHEDULE A FREE EVALUATION
IN TACOMA
Free estimates for foundation and concrete repair are available to residents of Tacoma and nearby Pierce County communities. Get your home inspected today through TerraFirma to help protect your property through the wet season and beyond.
Some of the most requested services
Terrafirma offers IN Tacoma
TACOMA Homeowners Frequently Asked Questions
Do I Need a Permit for Foundation Repair in Tacoma?
Foundation repair projects performed in Tacoma may require permits through the City of Tacoma or Pierce County, depending on the scope and property location. If the work involves foundation piers, wall stabilization systems, crawl space structural repair, or major concrete repair, permitting and inspection may be required to confirm compliance with current Washington building codes.
The professional foundation repair experts at TerraFirma assist property owners by helping them complete any required permitting or inspections while repairing a foundation.
Why Do Tacoma Basements Get Wet During Winter?
Due to Tacoma’s rainy climate, clay pockets, sloped lots, and older drainage systems, basement moisture problems are common. Saturated soil around a home can increase hydrostatic pressure against basement walls, forcing water through cracks, seams, and weak points. Properties with poor exterior drainage or aging waterproofing can see these issues worsen during the wet season.
How Quickly Can TerraFirma Serve Tacoma Homes?
TerraFirma serves Tacoma and nearby Pierce County communities with foundation inspections and repair solutions. Most Tacoma property owners can request a free foundation inspection within several days, with repair timelines depending on the severity of the issue, seasonal demand, access, and project complexity.
Does Clay Soil Affect Foundations in Tacoma?
Yes. Many properties in the Tacoma area have clay-heavy or moisture-sensitive soils that expand when wet and contract as they dry. This can cause foundation stress, settlement, concrete cracking, and basement or crawl space moisture. That is why foundations in many parts of Tacoma and Pierce County are affected by seasonal soil movement.
Are Homes in South Hills More Prone to Settlement?
Yes. Due to the topography and the composition of the soil, there have been many problems with homes built on slopes. Slope instability and hillside erosion can cause foundation problems such as settlement, cracks in walls, uneven floors, foundation cracks, or even flooding issues due to the nature of the clay soil expansion.
Commercial Foundation Services
to Minimize Downtime & Risk
Our commercial foundation repair solutions are built around the principles of minimal downtime, long-term performance, and efficient use of resources to accomplish the goal. Our services often save money on first-time costs and always save on long-term costs while maximizing property values.
Objective Engineering Solutions
Dedicated Partner Approach
Choose from Multiple
Solution Options
Safe, Effective, Experienced
& Trained Crews
TERRAFIRMA INTACOMA
With 20 years of experience tackling foundation repairs and waterproofing across Washington, we’ve seen
just about everything. Dive into our blog for some great homeowner tips, insightful case studies, and
impressive before & after galleries showcasing our work.
Homeowners across Tacoma have relied on TerraFirma for their foundation leveling and stabilizing, including North End, Proctor, Stadium District, Hilltop, Central Tacoma, South Tacoma, and West End neighborhoods, as well as nearby Fircrest, University Place, Lakewood, Puyallup, and Gig Harbor.
TACOMA
Homeowner
REVIEWS
Don’t take our word for it – see what our clients have to say.
From Tacoma to Seattle, Portland, and across the Pacific Northwest, our Foundation Repair work speaks for itself
TerraFirma
Tacoma Office
10111 S Tacoma Way d4
Tacoma, WA 98499
Phone:
866-486-7196
Hours: Monday – Friday, 8am-5pm
Crawl Space Repair & Foundation Lifting For Tacoma & Seattle Homeowners
Foundation cracks? Support posts sagging? Walls bowing? With TerraFirma‘s team of experts we can fix it!
We want to make your home dry, stable, and safe. TerraFirma has waterproofed basements for over 20 years from Lake Oswego to Beaverton, and Hillsboro to Gresham. Backed by the best warranty in the business.
