Basement waterproofing covers everything from sealing hairline foundation cracks to installing interior drain tile and sump pump systems, grading and gutter fixes that keep water away from the foundation, and full exterior excavation with membrane and drainage board. Janesville's mix of clay-heavy soil and older housing stock means a lot of homes deal with water intrusion after heavy spring rain or snowmelt, so this is one of the more common categories on our site. We list 13 basement waterproofing businesses serving the area, ranging from small crack-repair specialists to full-service crews that handle drain tile and sump installs.
When you're comparing contractors, look past the sales pitch and check a few things directly: do they diagnose the actual water path (grading, gutters, hydrostatic pressure, a cracked wall) before quoting a fix, or do they jump straight to selling a system? Do they carry insurance and pull permits when required? Do they offer a written warranty on the work, and is it backed by the company itself rather than a third party that may not be around in ten years? A cheap patch job on a symptom, like painting a wall with sealant instead of fixing drainage, tends to fail again within a few years.
Our scoring weighs verified customer feedback, how consistently a business responds to and resolves complaints, and signals like licensing and how long they've been operating in the Janesville area. For a side-by-side ranking of all 13 contractors, see our best waterproofing contractors in Janesville guide. Details on how we calculate scores are on our methodology page.
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13 businesses, scored on recent reviews. The order weighs each business's overall score by how much of its reviewed work is basement waterproofing, so a lower-scored specialist can rank above a higher-scored generalist.
Water in the basement from poor grading is their most common fix, often resolved in days with follow-up landscaping that looks polished. Reviewers consistently note the team and the crew's speed, attentiveness to detail, and willingness to stand behind the work with no complaints recorded.
Homeowners consistently praise the owner the team for flexible, quality remodels and deck work done at reasonable rates. Communication is strong, though quote timing and arrival times have occasionally lagged. The team delivers thoughtful design solutions and maintains mostly clean work sites.
Flood Pros handles water damage and basement restoration with speed and care. Reviewers consistently praise the team's responsiveness (often within an hour), professional crew behaviour, and thorough cleanup. Staff explain the work clearly and follow up after jobs. One mold remediation job fell short when protective plastic wasn't used as promised, leaving the customer to arrange professional cleaning afterward.
Reviewers consistently experience attentive, knowledgeable staff who coordinate insurance and complete jobs on schedule with thorough cleanup. Work spans storm damage (roof and siding after hail), gutters, windows, and patio doors; crews handle small projects with the same care as major replacements. The team's hallmark is detailed communication and willingness to address minor issues after completion without hesitation. Owners the team are named for personal follow-up, transparency on pricing, and commitment to the community (including free tarping during past tornado damage).
Rock River Roofing delivers consistent results across roofing, siding, and exterior work. Staff including the team keep customers updated, complete jobs on time and within quoted prices, and leave work sites clean.
Find basement waterproofing in janesville for your project
No obligation. Describe your waterproofing job and we'll connect you with providers who fit what you need.
From initial quote through final cleanup, Wilco's team delivers consistent attention to detail and reliability. Window replacements, roof work, and inspections all earn praise for workmanship, punctuality, and staff who treat projects as priorities. Installation crews arrive on schedule, explain options without pressure, and finish with clean worksites. A single missed estimate appointment stands out sharply against 16 five-star reviews from satisfied customers.
Center Construction handles concrete and shed work with strong attention to drainage, site cleanup, and customer contact. Most reviewers praise prompt quotes, level pours, and the team's willingness to correct conditions like settling patios. One past customer reported an out-of-square concrete pad and felt a lack of accountability when issues arose.
Every review is five stars. Customers consistently praise the team's responsiveness, clear pricing, and willingness to complete extra work without charging extra. They return for repeat jobs and recommend the company to others. The business tackles complex spray foam insulation alongside roofing: attics, basements, crawl spaces, and cathedral ceilings, often discovering and fixing previous installation mistakes during the process.
Nearly all reviewers praised Advanced Construction's speed, professionalism, and follow-through on projects ranging from egress windows to full home remodels. One customer's egress window held perfectly during regional flooding weeks after install. The team earned trust for honoring warranty work on older jobs without argument, keeping job sites clean, and communicating clearly with insurance adjusters. Two isolated one-star reviews mentioned missed appointments and rudeness, but represent outliers in a strong track record.
Both reviewers praise speed and courtesy. One caller noted the team prioritized assessment during area-wide flood damage, arriving ahead of schedule to help a neighbor in crisis.
Water damage and fire cleanup draw consistent praise for prompt arrival and respectful crew behavior; staff follow up for days after initial work. Rebuilding work has shown inconsistency, with some projects completed professionally while others faced shortcut attempts and quality lapses.
Most reviewers praise White Oak's workmanship, communication during projects, and friendly crew. Two low ratings flag slow estimate responses and post-project quality issues that left customers frustrated.
Review evidence is limited. The business is based in Janesville and their website lists basement and exterior waterproofing services including sump pump installation, French drains, crack repair, and crawl space encapsulation. They state they are certified basement waterproofing contractors.
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Last updated 2026-09-07