Basement Waterproofing & Foundation Repair in Johnston, Iowa
Iowa’s Highest-Rated Company — Serving Polk County Homeowners since 2012
Expert Basement & Foundation Services in Johnston, Iowa
Johnston is a planned community with a mix of newer subdivisions and established neighborhoods near the Saylorville Lake watershed. Homes near Beaver Creek and other drainage corridors face elevated groundwater tables during wet seasons.
BAM Basements & Masons has been protecting Polk County homes since 2012. Our team of certified technicians understands the unique soil conditions, drainage patterns, and weather challenges that affect Johnston homeowners. We provide free, no-obligation assessments and back every job with a transferable lifetime warranty.
Services BAM Provides in Johnston
Every service backed by our transferable lifetime warranty.
Basement Waterproofing
Interior drain tile, exterior membranes, crack injection — we stop water at the source.
Learn More →Foundation Repair
Carbon fiber straps, wall anchors, poly piers — we stabilize and lift failing foundations.
Learn More →Egress Windows
Code-compliant egress window installation that adds light, safety, and living space.
Learn More →Sump Pumps
Primary and battery backup sump pump installation, service, and replacement.
Learn More →Crawl Space Repair
Full encapsulation, vapor barriers, drainage, and dehumidification systems.
Learn More →Concrete Lifting
Poly foam injection lifts sunken driveways, sidewalks, and patios without replacement.
Learn More →Ready to Protect Your Johnston Home?
Get a free, no-obligation assessment from BAM’s certified technicians. We’ll diagnose the problem and give you a clear, honest recommendation.
Frequently Asked Questions — Johnston Homeowners
Johnston's proximity to the Saylorville Lake watershed and Beaver Creek means groundwater tables can rise significantly during spring snowmelt and heavy rain events. Homes in lower-lying areas of Johnston are at higher risk and benefit most from interior drainage systems.
Yes. BAM installs egress windows throughout Johnston and all of Polk County. An egress window transforms a dark basement into livable space while meeting Iowa building code requirements for emergency egress. We handle the excavation, window installation, and well cover.
Warning signs include horizontal or stair-step cracks in basement walls, doors and windows that stick, uneven floors, and visible gaps between walls and ceiling. If you see any of these in your Johnston home, call BAM for a free assessment.
Yes. BAM Basements & Masons provides a transferable lifetime warranty on all waterproofing and drainage systems installed in Johnston and throughout Central Iowa. The warranty transfers to the new owner if you sell your home.
Most interior waterproofing projects in Johnston are completed in 1–2 days. Larger projects or those requiring exterior excavation may take 2–4 days. BAM minimizes disruption and cleans up completely before leaving.