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Basement Waterproofing in NE, IA, and MO, including Sioux City, Council Bluffs & Omaha.
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Products & Services
Mold Services
Mold Remediation
Dust Mites Control
Mold Spores
Mold Removal and Cleanup
Dry Rot & Brown Rot

Radon Mitigation
Radon Testing
Radon Detection
Radon Abatement
Radon Mitigation System

Basement Repair Services & Products
WaterGuard Interior System
DryTrak Drainage Channel
TrenchDrain Drain Grate
IceGuard Discharge Line
FlexiSpan Wall Crack Repair
Polyurethane Crack Sealing
WellDuct Window Drainage
BrightWall Waterproof Panels
ThermalDry Wall Barrier
Basement to Beautiful Pre-Finishing Wall Insulation Panels
Drain Tile Installation
SuperSump Pump System
TripleSafe Pumping System
UltraSump Battery Back Up
SaniDry Dehumidifier

Crawl Space Repair Services & Products
CleanSpace Encapsulation Vapor Barriers and Liners
Turtle Access Hatch
EverLast Crawl Space Doors
SaniDry CSB Dehumidifier
SmartDrain Water Drainage
SilverGlo Wall Insulation
TerraBlock Floor Insulation
SmartSump Sump Pump
Crawl-O-Sphere Crawl Space Fan
WallCap Block Wall Sealer
SmartVent Flood Vents

Foundation Repair Services & Products
Push Pier Underpinning for Settlement, Foundation Leveling, Sinking Foundation Repair
Geo-Lock Wall Anchors
Geo-Lock Helical Anchors
PowerBrace Bowed Wall Repair
CarbonArmor Fiber Wall Repair
SmartJack Crawl Space Support
Slab Pier Repair
PolyLevel Concrete Lifting
EZ Post Deck Repair
ShotCrete Wall Restoration

Finishing / Remodeling
EverLast Wall Panels
Insulated Wall Panels
Premier and Linen Ceiling Tiles: No-Sag Warranty
Thermal Dry Floor Tiles
MillCreek Faux Wood Flooring
SunHouse Window Wells
EverLast Window Replacement
RockWell Egress Window

Company Awards
We have earned the service industry’s coveted Angie’s List Super Service Award, reflecting an exemplary year of service provided to... [Read more]
Thrasher Basement Systems is proud to be voted, first place for the Best basement Waterproofing and Repair company in the... [Read more]
Dave Thrasher of Foundation Supportworks was awarded 2013's 40 under 40 by the Midlands Business Journal. This award is given... [Read more]
More Awards

Thrasher Basement Systems serving Spencer, IA 51301

Selected Thrasher because of the annual State of Iowa promotion to measure radon....
Happy Customers Surrounding Spencer, IA
Testimonials
Reviews
Work requests

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Reviews From Spencer
Testimonials From Spencer
We appreciate what your company does to make a healthier living environment.
Testimonial by Ken H. from Spencer, IA
Our crawlspace was just a dark place I didn't ever want to go into. They were very polite, professional, and helpful.
Testimonial by Sandy O. from Spencer, IA
Thrasher Basement Systems were recommended to me by my contractor who found the moisture problem in my basement when some flooring was removed. He had a family...
Testimonial by Roxy M. from Spencer, IA

Responsible basement refinishing and remodeling company serving Spencer, IA

We not only adhere to the highest industry standards, we strive to be the industry leader in the basement finishing services we provide. We also use state-of-the-art products and technology which are designed to upgrade your home with more living space in the basement. We are the authorized Basement Systems dealer in Spencer, IA.

Services we offer in Spencer:

  • Remodeled basement ideas
  • Basement flooring
  • Basement ceiling tiles
  • Refinished basement services
  • Non-organic basement materials so ward off mold growth
  • Help if you need your basement waterproofed before you remodel
  • Foundation repair services and products
  • Radon testing and mitigation services
  • Financing Available
  • FREE written estimates and inspections, and fast installation
News & Events From Spencer
Spring is finally here! The days are growing longer and the temperatures are getting warmer and as winter loosens its... [Read more]
Radon is the second leading cause of lung cancer, second only to cigarette smoke. It is estimated to be responsible... [Read more]
Omaha, NE – With radon being one of the leading causes of lung cancer today, it’s vital to bring attention... [Read more]