Professional Waterproofing Solutions for Every Masonry Challenge
Water causes more damage to masonry structures than any other environmental factor. From basement foundations absorbing groundwater to building facades weathering decades of rain and freeze-thaw cycles, moisture infiltration leads to deterioration that worsens with each passing season. Bi-State Masonry, Inc. provides comprehensive waterproofing services that protect both residential and commercial masonry throughout Iowa and Illinois. Since 1999, we have helped property owners safeguard their investments with waterproofing solutions tailored to the specific challenges each building faces.
Effective waterproofing requires more than simply applying a sealer—it demands understanding how water interacts with different masonry materials, identifying the true source of moisture problems, and selecting the right combination of products and techniques for lasting protection. As experienced masons, we bring this depth of knowledge to every waterproofing project. We understand how buildings are constructed, where water typically finds its way in, and what solutions actually work in our Midwest climate.
Why Masonry Waterproofing Matters
Brick, block, stone, and concrete are durable materials, but none are impervious to water. All masonry is porous to some degree, and mortar joints create additional pathways for moisture entry. When water penetrates masonry, it triggers a cascade of damaging processes that accelerate over time.
In the Quad Cities region and throughout Iowa and Illinois, our climate amplifies these problems. Cold winters mean repeated freeze-thaw cycles—water that enters masonry expands as it freezes, creating internal pressure that cracks and spalls the material from within. Hot, humid summers promote mold growth when moisture becomes trapped inside wall assemblies. The result is progressive deterioration that eventually requires costly repairs or replacement.
Consequences of Unprotected Masonry
Water infiltration affects masonry structures in multiple ways. Efflorescence appears as white, powdery deposits on masonry surfaces—evidence of water carrying soluble salts through the material. While primarily a cosmetic issue initially, efflorescence indicates ongoing moisture movement that will eventually cause structural damage. Spalling occurs when the surface of brick, block, or concrete flakes and peels away, typically resulting from freeze-thaw damage or moisture-related chemical reactions. Left unaddressed, spalling progressively destroys masonry units.
Steel reinforcement embedded in masonry or concrete corrodes when exposed to moisture, expanding as rust forms and cracking the surrounding material. This corrosion-induced cracking is particularly problematic in commercial structures where structural steel is common. Mold and mildew growth inside wall cavities and basements creates health hazards and unpleasant odors. Foundation settlement and structural instability can result from prolonged water exposure undermining footings and foundation walls.
Our Waterproofing Services
Bi-State Masonry provides waterproofing services for both residential and commercial properties. We approach each project by first understanding the specific water problems involved, then developing solutions that address both immediate concerns and long-term protection.
Basement Waterproofing
Wet basements are among the most common water problems homeowners face. Our basement waterproofing services address moisture issues through interior coatings and sealers, crack injection, exterior waterproofing membranes, foundation wall restoration, and drainage improvements. We assess whether water is entering through walls, floors, or both, and whether the source is groundwater, surface runoff, or plumbing issues. This thorough evaluation ensures we recommend solutions that actually solve the problem rather than just masking symptoms.
Residential Exterior Waterproofing
The brick, stone, and block exterior of your home needs protection from above-grade moisture just as much as your basement needs protection from below-grade water. Our residential waterproofing services protect exterior walls, chimneys, and other above-grade masonry from rain penetration and weathering. We apply penetrating sealers that protect without changing appearance, elastomeric coatings where more substantial protection is needed, and address mortar joint failures that allow water entry.
Commercial Building Waterproofing
Commercial and institutional buildings present waterproofing challenges that differ from residential work in scale, complexity, and performance requirements. Our commercial building waterproofing services protect everything from multi-story facades to below-grade parking structures. We work with property managers, facility directors, and building owners throughout the Iowa and Illinois corridor to develop waterproofing solutions that protect building investments for decades.
Waterproofing Techniques and Solutions
Effective waterproofing relies on selecting the right techniques and products for each situation. We employ a range of proven solutions, choosing appropriate methods based on the building type, water source, masonry condition, and performance requirements.
Chemical Grout Injection
When water enters through cracks in concrete or masonry, chemical grout injection can seal the pathway from within. We inject specialized polyurethane or epoxy materials that fill cracks completely, expand to seal surrounding voids, and bond to the masonry to create a lasting barrier. This technique is particularly effective for foundation cracks and can often be performed from inside the building without excavation.
Through-Wall Flashing
Flashing systems installed within masonry walls intercept water that penetrates the outer wythe and direct it back outside through weep holes. Properly designed and installed flashing is essential for cavity wall construction and can be retrofitted in existing walls where water infiltration at shelf angles, lintels, or window heads is occurring.
Epoxy Coatings and Sealers
Epoxy-based products provide excellent adhesion and durability for protecting concrete and masonry surfaces. We apply epoxy coatings to basement floors, parking structures, and other surfaces where chemical resistance and abrasion durability are important in addition to waterproofing. Penetrating epoxy sealers consolidate deteriorated concrete while providing moisture protection.
Expansion Joints
Buildings move—they expand and contract with temperature changes, settle over time, and respond to wind and seismic loads. Properly designed and maintained expansion joints accommodate this movement while preventing water infiltration. We install new expansion joints and rehabilitate existing ones that have failed, using appropriate sealants and backer materials for each application.
Air and Vapor Barriers
Controlling moisture movement through building envelopes requires more than just keeping liquid water out. Air barriers prevent moisture-laden air from penetrating wall assemblies where it can condense on cold surfaces. Vapor barriers control moisture diffusion through materials. We integrate these systems with masonry waterproofing to provide comprehensive protection against all forms of moisture intrusion.
Traffic Bearing Waterproofing
Parking garages, plaza decks, and balconies require waterproofing systems that protect the structure below while withstanding vehicle traffic or pedestrian use. We apply traffic bearing membrane systems that combine waterproofing performance with wear resistance. These systems protect structural concrete from water, deicing chemicals, and the abrasion of daily use.
Sealants and Caulking
Joints between masonry and other building materials—windows, doors, dissimilar materials—require flexible sealants that accommodate movement while preventing water entry. We select sealant types appropriate for each application, prepare joints properly for adhesion, and apply materials to manufacturer specifications for long-term performance.
Below Grade Waterproofing
Foundation walls and below-grade structures face constant exposure to soil moisture and, in many locations, hydrostatic pressure from groundwater. Below grade waterproofing systems include membrane applications, drainage boards, and foundation drain systems that work together to keep water out of basements and below-grade spaces.
Building Facade Inspections and Water Tests
Before implementing waterproofing solutions, we often perform detailed inspections and water testing to identify exactly where and how water is entering a building. Systematic water testing using calibrated spray racks allows us to pinpoint leakage pathways that visual inspection alone might miss. This diagnostic approach ensures that waterproofing efforts address actual problems rather than assumed ones.
Residential and Commercial Waterproofing
While the fundamental principles of waterproofing apply to all masonry structures, residential and commercial projects differ in important ways. Understanding these differences helps property owners know what to expect and ensures appropriate solutions for each building type.
Residential Waterproofing
Home waterproofing typically focuses on basement protection and exterior masonry preservation. Homeowners often discover water problems through visible signs—damp basement walls, water on floors after rain, musty odors, or deteriorating exterior brick. Our residential waterproofing services address these concerns with solutions scaled appropriately for homes: interior and exterior basement waterproofing, foundation crack repair, exterior sealer application, and chimney waterproofing.
We serve homeowners within 50 miles of the Quad Cities, including Davenport, Bettendorf, Moline, East Moline, Rock Island, and surrounding communities in Iowa and Illinois. Our residential work benefits from the same expertise and quality standards we apply to commercial projects, but with pricing and approaches appropriate for home-scale work.
Commercial Waterproofing
Commercial and institutional buildings present larger-scale challenges requiring different approaches. Multi-story facades need scaffolding or swing stage access. Parking structures require traffic-bearing systems that maintain waterproofing under vehicle loads. Below-grade spaces in commercial buildings may face significant hydrostatic pressure requiring robust waterproofing systems.
We serve commercial clients throughout the Iowa and Illinois corridor, from Des Moines to the greater Chicago area. Our commercial waterproofing experience includes government buildings, schools, universities, hospitals, office buildings, parking structures, and industrial facilities. We understand the procurement processes, documentation requirements, and performance expectations of institutional and commercial clients.
Why Choose Bi-State Masonry for Waterproofing
Many contractors offer waterproofing services, but few bring the masonry expertise that makes waterproofing truly effective. Here's why property owners throughout Iowa and Illinois choose Bi-State Masonry.
Masonry Expertise
We are masons first—waterproofing is one of many services we provide as part of comprehensive masonry care. This background matters because effective waterproofing often requires addressing underlying masonry conditions. Deteriorated mortar joints, cracked bricks, spalled concrete, and structural deficiencies all affect waterproofing performance. We identify and repair these issues rather than simply coating over problems that will eventually compromise any waterproofing system.
26+ Years of Regional Experience
Since 1999, we have been waterproofing buildings throughout the Quad Cities and the broader Iowa-Illinois region. This experience means we understand local construction methods, common problem areas in buildings of different eras, and how our specific climate conditions affect waterproofing performance. We know what works here because we've been doing it here for over two decades.
Complete Service Capability
Waterproofing projects often reveal the need for related masonry work—tuckpointing deteriorated joints, rebuilding damaged sections, restoring concrete surfaces. As a full-service masonry contractor, we handle all of this work with our own crews. You get coordinated solutions rather than multiple contractors with finger-pointing when problems arise.
Competitive Pricing
Our efficient operations and merit-based workforce keep overhead low. We pass these savings to our clients through competitive pricing for quality workmanship. For commercial projects, we have extensive experience with prevailing wage requirements on government and institutional work.
Free Estimates
We provide free estimates for all waterproofing projects. Our assessment includes identifying water sources, evaluating masonry conditions, and recommending appropriate solutions with clear pricing. This allows property owners to make informed decisions based on complete information.
Frequently Asked Questions
What is masonry waterproofing?
Masonry waterproofing encompasses a range of techniques and products designed to prevent water from penetrating brick, block, stone, and concrete structures. This includes applying sealers and coatings, installing drainage systems, injecting cracks with specialized materials, and addressing the underlying causes of water infiltration. The goal is to protect masonry from moisture damage that leads to deterioration, mold growth, and structural problems.
Why is waterproofing important for masonry structures?
Water is the greatest threat to masonry longevity. When moisture penetrates brick, block, or stone, it causes multiple forms of damage: freeze-thaw cycling breaks apart masonry from within, efflorescence deposits unsightly salts on surfaces, steel reinforcement corrodes and expands, and mold growth creates health hazards. Proper waterproofing prevents these problems and significantly extends the service life of masonry structures.
What is the difference between waterproofing and sealing masonry?
Sealing typically refers to applying penetrating or film-forming products to masonry surfaces to reduce water absorption. Waterproofing is a broader term that includes sealing but also encompasses more comprehensive solutions like membrane systems, drainage installations, crack injection, and below-grade protection designed to resist water under hydrostatic pressure. The right approach depends on the specific water problem and building conditions.
How often does masonry waterproofing need to be reapplied?
Maintenance intervals vary significantly by product type and exposure conditions. Penetrating sealers typically last 5-10 years on above-grade masonry. Elastomeric coatings may last 10-15 years with proper maintenance. Below-grade membrane systems are designed for building lifetime performance. We assess each situation individually and recommend appropriate maintenance schedules based on the specific products installed and environmental factors.
Do you offer waterproofing services for both residential and commercial buildings?
Yes. Bi-State Masonry provides waterproofing services for residential properties within 50 miles of the Quad Cities and commercial buildings throughout the Iowa and Illinois corridor from Des Moines to the greater Chicago area. Our residential services include basement waterproofing and exterior masonry protection. Our commercial services cover everything from facade waterproofing to parking structure deck coatings.
How do I know if my building needs waterproofing?
Common signs include water stains on interior walls or floors, efflorescence (white mineral deposits) on masonry surfaces, damp or musty odors, visible water infiltration during rain, spalling or deteriorating brick or concrete, and mold or mildew growth. If you notice any of these issues, a professional assessment can identify the water source and recommend appropriate solutions before damage worsens.
Request Your Free Waterproofing Estimate
Whether you're dealing with a wet basement, deteriorating exterior masonry, or water infiltration in a commercial building, Bi-State Masonry can help. We provide free estimates that assess your specific situation, identify water sources, and recommend effective solutions.
Contact us at (309) 786-8800 or request an estimate through our website. For residential waterproofing, we serve homeowners throughout the Quad Cities and surrounding communities within 50 miles. For commercial waterproofing, we work with clients throughout the Iowa and Illinois corridor from Des Moines to the greater Chicago area. With over 26 years of masonry expertise, Bi-State Masonry delivers waterproofing solutions that protect your property for years to come.