01What typically goes wrong
The original piers in many older homes were short concrete or brick blocks resting on shallow footings. As the clay beneath them shrinks and swells, individual piers sink or tilt, and floors develop soft spots, bounces or slopes. Wood shims stacked on piers dry out, crush or slip over time.
Moisture is the second problem. A crawl space that stays damp invites wood rot and termites in sills, joists and beams. In Tyler's humid summers, poor ventilation or a plumbing leak can rot a sill plate surprisingly fast.
02Repair options
Re-shimming with steel shims is the lightest repair and can level floors that have only sagged a little. Where piers have failed, crews install new concrete piers on proper footings, or steel or pressed piers if the soil calls for deeper support. Rotted beams, joists and sills are cut out and replaced or sistered with new lumber.
Because the work happens in the crawl space, access matters. Some homes need a new or enlarged access opening. After structural work, a crawl space repair plan, such as vapor barrier, vent changes or drainage, helps the new wood last. If the whole house is far out of level, the job may be closer to full house leveling.
03Historic homes
Parts of Tyler, including the Charnwood and Azalea historic districts, are recognized for their older architecture. If your home is in a designated district, check with the City of Tyler about any rules on exterior changes such as new skirting or access openings before work starts.
Structural work under the floor is usually less restricted than visible changes.
04Inside the crawl space
Pier-and-beam houses rest on piers, beams and joists. Repair can mean resetting or replacing piers, adding new ones, swapping crushed shims for steel, and sistering damaged joists. Moisture and wood rot are checked at the same time.
Older homes in central Tyler often have crawl spaces with limited access, which affects time and cost.
05Ventilation and moisture
Standing water and damp soil under a house speed up rot and pests. Grading, gutters and sometimes a vapor barrier help.
Option compare
Shimming versus adding piers
Piers are sound, floor dipped a little
Piers cracked, leaning or too far apart
Light, done from below
Heavier, new footings dug
May need re-shimming later
Adds support where it was missing
Around Tyler
How this looks in East Texas homes
Sunken piers under an older home. Many East Texas homes sit on piers. Resetting or replacing them restores floors.
Avoid these
Common mistakes
Shimming over rot. Rotted wood should be replaced first.
Before you hire
Questions to ask
Will you replace rotted sills?
Ask for photos.
Will you add piers between existing ones?
Spacing affects sag.
What shims do you use?
Steel shims last longer than wood.
Will you address moisture?
Dry crawl spaces protect repairs.
Step by step
How the job usually goes
- 1
Crawl-space inspection
The tech checks piers, beams, sills, joists and moisture under the house.
- 2
Plan
Sunken piers are reset or replaced, and added piers go where beams sag between supports.
- 3
Wood repair
Rotted sills and beams are replaced before shimming.
- 4
Level and secure
Steel shims bring floors up, and moisture control keeps the wood dry.