Free On-Site Inspection

Portland Basement Waterproofing

Portland’s rainy seasons and shifting clay soils pressure basement walls, leading to leaks and moisture issues. Our licensed waterproofing specialists assess, diagnose, and seal cracks, install drainage systems, and protect against seepage with a written estimate before any work begins. Same-week scheduling across the Portland metro.

24/7 Emergency Response Available

Talk to Local Foundation Experts

4.7/5

Trusted by 347+ customers in Portland & Neighboring

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About Our Service

Reliable Basement Waterproofing Solutions Built to Last

Portland basements face constant pressure from rain and rising groundwater. We stop leaks at the source with interior drainage, sump systems, crack sealing, and waterproof membranes, keeping your basement dry, healthy, and usable year-round.

With professional attention and advanced techniques, we ensure your basement stays dry and protected for years to come. As Portland foundation repair specialists, we protect the structure behind every dry basement we deliver.

We Waterproof For Your Comfort

Call : +1 (971) 521 9445

How We Work

A Simple Process to Waterproof, Seal, and Protect

We inspect and treat basement walls, sealing cracks, installing drainage channels, and applying waterproof membranes. Our approach is thorough, cost-effective, and minimally disruptive.
STEP 1

Inspect & Assess

Our technicians thoroughly inspect basement walls, floors, and drainage to assess moisture entry points and determine the optimal waterproofing plan.
STEP 2

Install Drainage Channels

We excavate a perimeter trench and install drainage channels alongside the footing to redirect water away from your basement.
STEP 3

Sealant & Membrane

Our team applies industrial-grade crack sealants and waterproof membranes to vulnerable areas, preventing water infiltration and ensuring lasting protection.
STEP 4

Test & Confirm Seal

After installation, we test all seals and drainage paths, ensuring a watertight basement environment and confirming system performance.
Our Benefits

Why Homeowners and Businesses Trust Our Waterproofing Service

Our basement waterproofing service stops leaks quickly and cost-effectively. Whether for homes or commercial properties, we deliver long-lasting dryness and improved structural integrity with minimal disruption.
our team working in portland

Fast Service

Rapid response and efficient waterproofing so you don’t have to wait for a dry basement.

Qualified Team

Certified professionals with years of experience in basement waterproofing and foundation protection.

Affordable Pricing

Transparent pricing with upfront estimates—no hidden fees, just honest waterproofing solutions.

24/7 Support

Day or night, we’re available to address your concerns and offer emergency waterproofing assistance.

GET ESTIMATE TODAY

Book Your Free Basement Waterproofing Assessment

Our experts will assess your basement and provide honest, reliable waterproofing recommendations.
Testimonials

Why Clients Trust Us Year After Year

Hear from Portland homeowners who trusted our team for reliable foundation repairs, crawl space solutions, and honest service every step.

After the winter rains, our Laurelhurst basement started showing cracks. Portland Foundation Repair explained everything clearly, showed up on time, and stabilized the wall without turning our yard into a mess. The crew was respectful, organized, and genuinely cared about protecting our home. I’d recommend them to any Portland homeowner.

Mike H.

Our crawl space in Sellwood had sagging floors and moisture problems, and I wanted answers, not sales pressure. Their team inspected the piers, walked me through the repair plan, and completed the work efficiently. The floors feel solid again, and the cleanup was better than expected for a dirty job.

Sarah

We own a bungalow near Mt. Tabor, and foundation issues felt overwhelming until this crew arrived. They were patient, friendly, and worked around our schedule, even during typical Portland drizzle. The finished repair looks clean, the basement feels drier, and communication stayed excellent from estimate to the final walkthrough appointment.

Josh K.

Have Doubts?

Our Basement Waterproofing Services

Explore our FAQ section for quick answers to your most common basement waterproofing questions—all in one place.

Interior drainage and sealing typically runs $3,000 to $10,000, while full exterior waterproofing with excavation can reach $15,000+. The price depends on your basement size, the water source, and whether you need a sump pump or full perimeter drain. We quote after diagnosing where the water is actually coming in.
That points to hydrostatic pressure: Portland’s winter rain saturates the clay soil around your foundation, and the water pushes through cracks, cove joints, or porous walls. It often means your exterior drainage or grading isn’t moving water away fast enough, which we address as part of the fix.
Interior systems (drainage channels and a sump pump) are less invasive and ideal for managing water that’s already getting in. Exterior waterproofing stops water before it reaches the wall but requires excavation. We recommend based on the leak source, your basement finish, and budget, and often a combination works best.
Usually, yes. That smell is moisture and mold spores. Once we stop water intrusion, add drainage, and control humidity, the dampness that feeds the odor is gone. Severe cases may also need mold remediation, which we’ll flag during inspection.
Yes. Standing water and constant moisture erode soil, corrode rebar, and worsen cracks over time, which can turn a waterproofing issue into a structural one. Addressing water early protects both your basement and the foundation itself.