A wet sullivan isn't just an inconvenience — it's a foundation threat, a mold factory, and a health hazard. Franklin County Foundation Repair provides complete sullivan waterproofing solutions for homeowners throughout Franklin County, MO. We stop water at its source and keep it out permanently. Call today for your free sullivan inspection.
📞 Free Sullivan Inspection — (636) 268-1700Franklin County, MO's clay-rich soil holds water like a sponge. After heavy spring rains, hydrostatic pressure builds against sullivan walls — sometimes reaching hundreds of pounds per square foot. This pressure forces water through cracks, cold joints, and wall-floor seams. In winter, freeze-thaw cycling expands existing cracks, creating new pathways for water intrusion.
Older homes throughout Franklin County, MO often have simple block or poured-concrete foundations without waterproofing membranes. Over decades, these walls crack, mortar deteriorates, and water finds every weakness. The solution isn't temporary patching — it's a permanent waterproofing system designed for Missouri's climate.
A perimeter drainage channel installed beneath your sullivan floor intercepts water before it can pool. Water flows to a sump pit where it's pumped safely away from your foundation.
We install high-capacity sump pumps with battery backup systems — critical for Missouri storms that knock out power precisely when you need your sump most. We service all brands.
Sullivan wall cracks are sealed from the interior using polyurethane or epoxy injection — a permanent, flexible seal that moves with your foundation rather than cracking again.
For severe cases, we excavate around the foundation, apply a waterproofing membrane, and install exterior drainage board and drain tile — addressing hydrostatic pressure at its source.
Even after waterproofing, humidity control is essential. We install commercial-grade dehumidifiers that maintain safe humidity levels automatically, preventing mold and protecting stored items.
Sullivan window wells accumulate water during heavy rain. We install proper drainage systems that route water away before it enters through window frames and seals.
| Service | Starting Price |
|---|---|
| Sullivan Inspection | Free |
| Wall Crack Injection | From $500 |
| Sump Pump Installation | From $1,200 |
| Interior Drainage System | From $3,500 |
| Complete Sullivan Waterproofing | From $5,000 |
Financing available. Call (636) 268-1700 for your free inspection and written estimate.
Don't wait — foundation problems worsen and get more expensive over time. Get your free inspection today.
(636) 268-1700 Schedule Free Foundation Inspection