Protect your home and your health with expert basement waterproofing from Iowa’s most trusted name.
The Permanent Solution to Your Wet Basement
A wet basement can lead to mold, damage to belongings, and costly structural repairs. At Tomlinson Cannon, we’ve been solving basement water problems since 1948. Our expert team will assess your situation and provide a customized waterproofing plan using proven systems backed by a lifetime transferable guarantee.
Request Your Free Basement Assessment Today
Why Homeowners Across Eastern Iowa Trust Tomlinson Cannon
75+ Years of Experience
Waterproofing Iowa basements since 1948 with integrity and expertise.
Lifetime Transferable Guarantee
Our work stays with your home — giving peace of mind to current and future homeowners.
Custom Solutions for Every Home
We tailor every project to your basement’s layout, water issues, and budget.
Reputation That Lasts
Realtors, bankers, and homebuyers recognize and trust the Tomlinson Cannon name.
$500 Off Full Waterproofing Systems – Limited-Time Offer
Now is the best time to protect your home — claim this seasonal discount while it lasts.
5 Signs You Need Basement Waterproofing
These symptoms are often caused by hydrostatic pressure — when water-saturated soil builds up around your foundation and forces water through cracks, joints, and porous concrete. Don’t wait for the damage to spread — let us help you stop it at the source.
Water seeping through walls or floor
Musty odors or visible mold growth
Paint or wall coverings peeling or bubbling
Standing water after heavy rain
Persistent dampness or high basement humidity
Our Basement Waterproofing Solutions
Our waterproofing services are backed by a lifetime transferable guarantee — so your home stays protected no matter what.
BASEMENT DRAIN TILE™ System
Our custom-engineered drainage system captures water before it enters your basement. Water that seeps through walls or over the footing is guided through weep holes into our drainage tile system and sent to a sump pump for safe removal — eliminating standing water for good.
Sump Pump Systems
Efficient, reliable sump pumps move water out of your basement fast. We install industry-grade pumps sized to your home’s needs and backed by long-term performance.
Wall Crack Injections
For homes with localized leaks, we inject expanding polyurethane foam into wall cracks. The material expands to seal out water and is often completed in just a few hours — no mess, no hassle.
Iowa City (Main)
FAQs about Basement Waterproofing
How much does it cost?
It depends on your basement size, water issues, and system needs. We provide free, honest assessments with no pressure.
Will the waterproofing really last?
Yes — our system is backed by a lifetime transferable guarantee, and we’ve stood behind our work since 1948.
Can you help with wall cracks too?
Yes — we provide quick foam injection crack sealing for targeted leaks, often completed in a single visit.
