Foundation & Waterproofing Services in Hillsboro, OR

Local Waterproofing Expertise

In downtown Hillsboro and neighborhoods like Orenco Station, homes face serious moisture challenges. Wet crawlspaces, foundation leaks, and window wells that flood are costly problems we handle year-round. This page covers foundation waterproofing, crawlspace vapor barrier installation, and site-specific solutions for Hillsboro homes. If water is seeping through walls or pooling below grade, call us for a free inspection.


Waterproofing contractor and foundation contractor work in Hillsboro, OR requires understanding local soil and weather. Heavy winter rains and high water tables mean your home's foundation is under constant pressure. Early action prevents mold, structural damage, and costly repairs down the road.

How We Work

Our process is straightforward: inspect, diagnose, install, and verify. You'll see exactly what's needed and understand every step before we start.

Free Inspection

We visit your Hillsboro home, check crawlspaces, basements, and exterior drainage. No hidden fees. We document findings in photos so you see what we see.

Written Estimate

You get a detailed proposal listing exactly what we'll do, materials used, and timeline. No pressure. You decide if and when to move forward.

Professional Install

Our crews arrive on schedule, work cleanly, and keep disruption minimal. We use industry-standard systems and seal everything properly before leaving.

Final Walkthrough

We show you the completed work, test all systems, and answer any questions. You'll have our contact info for warranty support.

You'll always know what's happening next—and when.

Our Services

We handle the specific moisture problems that plague Hillsboro homes and older builds near the Oregon Health & Science University campus and beyond.

Foundation Waterproofing

Cracked, weeping, or bowing foundation walls leak water into basements. We install interior perimeter drains and sump pumps, or exterior coatings and drain systems. West Hillsboro and Tanasbourne homes often need both approaches for complete protection.


  • Perimeter drain installation and grading
  • Sump pump setup with backup power
  • Wall sealing and crack repair
Corner of a concrete patio with a gravel bed, lighted stone wall, and exposed drain pipe at dusk

Perimeter drainage system installed in Hillsboro basement before sump pump discharge setup.

Concrete basement with white vapor barrier flooring and exposed wooden ceiling beams, looking toward an open end.

Installed vapor barrier in crawlspace with sealed vent covers in Northwest Hillsboro.

Crawlspace Vapor Barrier Installation

Crawlspaces under Orenco Station and downtown Hillsboro properties trap moisture that rots wood and spreads mold. We install heavy-duty plastic barriers, seal rim joists, and add dehumidifiers to keep relative humidity below 55 percent.


  • 6-mil vapor barrier with sealed seams
  • Vent blocking and air-sealing
  • Dehumidifier installation

Window Well Protection

Basement windows at grade level are common leak points. We install stainless steel window well covers, drain pipes, and solid sealing. Homes near the Tualatin Valley benefit from covered wells that shed snow and rain while letting light in.


  • Polycarbonate or metal well covers
  • Drainage lines to exterior or sump
  • Caulking and seal replacement
Outdoor basement window wells beside a brick house, lined with metal covers and a gravel border.

Covered window well with exterior drain system in Southeast Hillsboro home.

Covered concrete basement with support columns and vent grates

Finished encapsulation with reinforced support posts and sealed rim joist in Hillsboro crawlspace.

Crawlspace Cleanup and Encapsulation

Old vapor barriers, standing water, and debris breed mold and odors. We remove everything, install new drainage and barrier systems, and restore usable space. AmberGlen and Brookwood residents often reclaim storage and improve air quality.


  • Full debris and old barrier removal
  • Complete encapsulation system install
  • Structural reinforcement where needed

Why Local Expertise Matters

Hillsboro's wet climate, clay soil, and older foundation construction demand contractors who know the area.

Region-Specific Solutions

Tualatin Valley rainfall and groundwater tables require designs that work in this climate. Off-the-shelf approaches often fail here.

Building Code Know-How

Washington County permits and seismic codes are specific. We work within local rules and inspections without surprises.

Quick Access

Local means we respond faster for emergencies. No travel time to job sites around Tanasbourne or AmberGlen neighborhoods.

Our crews have waterproofed 500+ homes and commercial buildings across the Portland metro area since 1974. That experience translates into durable solutions for your Hillsboro property.

Coverage Area

Serving all Hillsboro neighborhoods and nearby Washington County areas.


We work throughout Hillsboro and the surrounding region. Key areas include downtown Hillsboro, Orenco Station, AmberGlen, Tanasbourne, West Hillsboro near McKinney Park, and Southeast Hillsboro. Whether you're on Cornell Road, Tualatin Valley Highway, or near the Washington County Courthouse, we're local and responsive.

Getting Here

Hillsboro is on the west side of the Portland metro, about 20 miles from downtown. Take Highway 26 west from Portland and take the Hillsboro exit. Look for signs to Main Street and Cornell Road in the downtown core. We're easy to find and can meet you at your home for inspections most days of the week.


If you're near Orenco Station or the MAX light rail terminus, we're minutes away. Call us at your convenience and we'll schedule a time that works for your schedule.