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Basement Waterproofing in Hillsboro, OR

From minor seepage to full basement flooding, JCB Waterproofing and Construction provides engineered solutions that protect your foundation and your investment.

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The JCB Waterproofing and Construction Difference

Four reasons why Hillsboro homeowners trust us with their most important asset.

1

Engineered Drain Systems

We design every interior drainage system from scratch based on your basement's actual water entry points, soil type, and floor elevation -- no one-size-fits-all kits.

2

Wall Seepage Solutions

We treat every crack, joint, and tie rod penetration as a potential failure point and address each one individually rather than painting over the problem.

3

Certified Waterproofing Specialists

We document every installation with before-and-after photos, moisture readings, and a written record so you have evidence of the work performed and its conditions.

4

Transparent, Written Quotes

Our quotes include the scope of work, materials specified by brand and model, warranty terms, and the payment schedule -- everything you need to compare us fairly.

Basement Waterproofing: What You Need to Know

Basement Waterproofing in Hillsboro

Most homeowners in Hillsboro do not realize that a wet basement is not simply a waterproofing problem -- it is a structural warning sign. Hydrostatic pressure that pushes water through walls does not stop pushing when the water is gone. It continues to stress the concrete and masonry, leading to horizontal cracks in block walls, inward bowing of poured walls, and undermining of the footing system. Addressing the symptom without understanding the root cause means spending money on solutions that fail within a few seasons.

Interior drain tile is the most reliable and widely proven basement waterproofing method for existing homes in OR because it manages water that has already entered the wall cavity rather than attempting to stop it at the exterior. The system consists of a perforated pipe, encased in clean washed gravel, installed at or below the footing level in a channel cut along the perimeter of the basement floor. Water that enters the wall-floor joint, seeps through cracks, or migrates through porous concrete flows into this channel and is directed by gravity to a sump basin. A properly sized sump pump then discharges the water away from the foundation. When correctly installed, this system operates indefinitely without clogging because the inlet is protected from sediment by the gravel bed and a filter sock on the pipe.

In poured concrete walls, the most common seepage points are cold joints, tie rod holes, and form tie locations. These are concentrated, well-defined penetrations that respond well to polyurethane or epoxy injection -- a process of drilling small ports along the crack or joint, installing surface-mounted injection ports, and pumping low-viscosity resin under pressure until it fills the void completely. The cured resin is permanently flexible or rigid depending on the product chosen, creating a watertight seal that moves slightly with seasonal concrete expansion without reopening.

Window wells in below-grade basement windows are a frequently overlooked water entry point. When the well fills with rainwater faster than the soil at the bottom can absorb it, that water presses directly against the window frame -- typically the weakest point in the entire basement envelope. We address window wells with a dedicated drain assembly at the base of the well, tied into the interior perimeter drain system, combined with a properly sized and anchored polycarbonate cover that deflects rain while allowing emergency egress.

Our written warranty covers both the installed drainage system and the sump pump equipment against defects in materials and workmanship. We recommend scheduling an annual inspection with our team to check that pump floats are operating freely, the battery backup is holding a charge, and the drain system's outlet is unobstructed. Homeowners in Hillsboro, OR who maintain this schedule rarely experience warranty claims because we catch the small issues before they become large ones.

Basement Waterproofing Services

Six core services covering every source of basement moisture in Hillsboro homes.

Interior Drain Tile Systems

Our drain tile installations use commercial-grade perforated pipe with filter sock protection, gravel bedding, and a concrete topping restored to match your original floor.

Wall Crack Injection

Poured concrete wall cracks are permanently sealed with low-viscosity polyurethane resin injected under pressure through surface-mounted ports drilled along the crack length.

Sump Pump Installation

We test every installation under simulated load conditions before completing the project, verifying pump cycling, float operation, and battery backup activation before we leave.

Block Wall Waterproofing

Hollow-core concrete block walls are treated with hydraulic cement parging and crystalline waterproofing compound that bonds into the block face and eliminates surface seepage.

Floor Crack Sealing

After injection, we verify the repair with a moisture meter reading to confirm that subslab water transmission has been eliminated at the crack location.

Window Well Drainage

Failing or undersized window well flashing and frame seals are replaced as part of every window well drainage project to address all water entry paths simultaneously.

How We Waterproof Your Basement

1

Moisture Assessment

Our assessment includes a history review of your water intrusion events and a visual inspection of the exterior grading, gutters, and downspouts that affect subsurface drainage.

2

Written Scope and Pricing

Our quotes include alternatives at different investment levels so you can choose a phased approach if budget requires it.

3

Professional Installation

Our certified crew completes the installation with minimum disruption to your home, working from a phased sequence designed to protect furnishings and maintain basement access throughout.

4

Final Inspection and Warranty

We perform a complete post-installation inspection, take final moisture readings, and walk you through the system before issuing your written warranty documentation.

Real Results from Hillsboro Homeowners

★★★★★

After three failed attempts with other companies, JCB Waterproofing and Construction finally fixed our basement for good. The drain system has handled two major rainstorms with zero water in the basement.

Robert & Linda T.
Hillsboro, OR
★★★★★

Professional from the initial phone call to the final walkthrough. They explained every step of the process and answered every question without making me feel rushed.

Patricia M.
Hillsboro, OR
★★★★★

Excellent crew, fair price, and the basement has been dry for fourteen months now including one of the wettest summers our area has seen. Highly recommend.

James K.
Hillsboro, OR

Basement Waterproofing FAQ

How much does basement waterproofing cost in Hillsboro, OR? +
Basement waterproofing costs in Hillsboro, OR vary based on the square footage of the basement, the number of water entry points, the type of system required, and site access factors. Most interior drain tile installations range from a few thousand dollars for a small single-story basement to substantially more for full-perimeter systems in larger homes. We provide written itemized quotes after a free on-site assessment so you are never guessing.
How long does the waterproofing process take? +
Most interior drain tile installations are completed in one to three days depending on the basement perimeter length and the number of additional repairs included in the scope. Crack injection jobs can often be completed in a single visit. We provide a timeline estimate in your written quote so you can plan accordingly.
What causes basement water problems in the first place? +
Basement water intrusion has several root causes that often work together. Poor exterior grading that slopes toward the house directs surface water to the foundation. Clogged or undersized gutters and downspouts deposit water at the foundation perimeter rather than carrying it away. High water tables in certain Hillsboro, OR geologies mean the soil around your foundation is saturated for much of the year regardless of surface drainage. And age-related concrete deterioration opens new pathways over time even in homes that were originally dry.
Can I fix a wet basement myself? +
DIY basement waterproofing is limited to minor cosmetic treatments that do not address root causes. Hydraulic cement, waterproof paint, and surface sealers can reduce surface moisture transmission but cannot overcome active hydrostatic pressure. If water is actively entering through cracks, joints, or the floor, no surface coating will provide a lasting solution. Properly installed interior drain systems require saw cutting concrete, removing and replacing aggregate, sloping pipe to a sump basin, and restoring the concrete surface -- work that requires professional equipment and experience to do correctly.
Is there a warranty on basement waterproofing work? +
Yes. We back every basement waterproofing installation with a written warranty that covers the drainage system and sump pump equipment against defects in materials and workmanship. Warranty terms are spelled out clearly in your contract before work begins, and your warranty certificate is issued upon project completion. We recommend annual inspections to maintain warranty coverage and catch any developing issues before they become larger problems.
What is included in a basement waterproofing inspection? +
Our free assessment includes a visual inspection of all basement walls and floor surfaces, moisture meter readings at multiple locations, identification of all active and historic water entry points, and an exterior review of grading, gutters, and downspout discharge. We photograph every finding and include the photos in your written quote so you have a complete record of the baseline condition.
Hillsboro (/ˈhɪlzbəroʊ/ HILZ-burr-oh) is the fifth-largest city in the U.S. state of Oregon and is the county seat of Washington County. Situated in the Tualatin Valley on the west side of the Portland metropolitan area, the city hosts many high-technology companies, such as Intel, locally known as the Silicon Forest. At the 2020 census, the city's population was 106,447.

Zip Codes in Hillsboro, OR that we also serve: 97006 97123 97124 97129

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Our Services in Hillsboro, OR

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