ABOUT US
Since 1948, Tomlinson Cannon has been Eastern Iowa’s trusted expert in keeping homes dry. We’ve earned our reputation by providing exceptional service and guaranteed solutions protecting your home roof to foundation. From seamless gutters and roofing to basement waterproofing and foundation repair, our team of skilled professionals delivers quality workmanship and delights you every step of the way. When you choose Tomlinson Cannon, you get our commitment to keeping your home dry and on firm foundations for generations to come.

If you're tired of musty smells, damp walls, or puddles after every rainfall, you're not alone. In Dubuque, basement water problems are common–thanks to our clay-rich soil, seasonal freeze-thaw cycles, and older homes with aging foundations. But the good news is, most wet basement issues can be solved from the inside. At Tomlinson Cannon, we specialize in basement waterproofing Dubuque homeowners can trust, with a focus on waterproofing inside basements so your space stays dry, safe, and usable year-round.
Why Basements in Dubuque Leak in the First Place
Let’s start with what’s causing the water:- Hydrostatic pressure: Clay soils around your foundation absorb moisture and swell. Over time, this pressure forces water through cracks, seams, and even the cold joints where your walls meet the floor.
- Poor exterior drainage: Gutters that overflow or downspouts that dump water too close to the foundation only make matters worse.
- Cracked foundation walls: Especially in older homes or after a harsh winter, cracks can let moisture seep in undetected until it's too late.
Our Proven Process for Waterproofing Inside Basements in Dubuque
We don’t sell one-size-fits-all kits or temporary fixes. We install custom waterproofing systems built for Dubuque homes, using methods proven to work in our climate.1. Interior Drainage Systems
We install a hidden trench drain system around the inside perimeter of your basement, underneath the concrete floor. This collects water before it reaches your living space and redirects it to a sump pump. These systems:- Prevent standing water or wall seepage
- Work even when exterior drainage fails
- Stay hidden beneath the finished floor
2. Sump Pump Installation
If you don’t already have one or if yours is unreliable, we’ll install a modern, high-capacity sump pump with a battery backup. It’s your last line of defense, and we make sure it works when the power goes out.3. Vapor Barriers and Wall Encapsulation
For basements with porous or damp walls, we add a heavy-duty vapor barrier. This blocks moisture from entering through concrete or block walls and helps maintain a healthier indoor environment.4. Crack Sealing and Injection
We use flexible polyurethane or epoxy injections to seal cracks and joints. These materials move with your foundation and won’t shrink or peel over time.How Interior Waterproofing Creates a Healthier Living Space
A wet basement isn’t just annoying. It can lead to:- Mold and mildew, especially behind walls or under carpets
- Poor indoor air quality that affects allergies and breathing
- Insect infestations, particularly centipedes and silverfish
- Structural damage, including rotted wood framing and corroded metal
Dubuque-Specific Challenges We Handle Every Day
Dubuque’s geography presents some unique problems, and we’ve seen them all:- Historic homes with stone or brick foundations that need special attention
- Homes on hillsides, where water naturally flows toward the structure
- Spring thaw flooding, when snowmelt and frozen soil combine to overwhelm drainage systems
- Homes with no existing sump pits or drainage at all
What Homeowners Want to Know
Can I finish my basement after waterproofing? Yes. In fact, interior waterproofing is the first step to finishing a basement properly. We make sure your walls and floors stay dry so you can install flooring, drywall, or even create a livable space. Is it worth the investment? A dry basement boosts your home’s resale value, protects your mechanical systems, and adds usable square footage. Plus, it prevents the long-term damage that leads to costly foundation repairs. What does it cost? We offer free inspections and transparent quotes. Every home is different, and we’ll walk you through options based on your budget and goals.Why Choose Tomlinson Cannon for Basement Waterproofing in Dubuque
- Engineer-backed designs — not guesswork
- Long-term warranties — because it should last
- Local experience since 1948 — we’ve worked on thousands of basements
- No pressure sales — just clear recommendations
- Full-service approach — we also handle foundations, drainage, and structural issues












