Serving the Portland Metro
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At RainWise, everything comes down to one mission: We Stop Water. Water intrusion is the #1 cause of damage in Northwest homes. From leaky roofs and failed siding to foundation cracks and mold, water finds the weak spot and gets inside. Our job is to find that spot, fix it at the source, and make sure it never comes back.
RainWise are Portland’s exterior construction and water intrusion specialists. We deliver high-quality, artisan work — siding, stucco, roofing, and window replacement and repair. More than quick fixes, we diagnose and solve leaks at the source to stop water intrusion for good. With expertise in building science and over 19 years serving Oregon, we provide exterior solutions that last. We also repair the structural damage water leaves behind — restoring framing, providing dry-rot repair, and repairing foundations — so your home stays strong, dry, and protected.
In Portland’s rainy climate, even a small leak can turn into a big problem. Left unchecked, water will rot siding and framing, damage drywall, spread mold, and weaken foundations.
Water intrusion often hides at transitions — between roof planes, flashing, and gutters. RainWise installs, repairs, and restores roofing systems with proper integration at every joint, ensuring leaks are stopped at the source. From asphalt shingles to specialty systems, our code-correct roofing protects your home against the Northwest climate for good.
From Hardie siding and Hardie panels to cedar siding, cedar shake, and both traditional and synthetic stucco systems — RainWise delivers professional siding installation and repair. We install proper flashing at all critical joints and transitions to ensure long-term leak protection. We also provide complete exterior finishing with professional caulking and paint, so your siding is fully sealed, weather-tight, and built for longevity.
A strong home starts at the foundation. RainWise repairs cracks, failing concrete, and water-damaged footings, then integrates perimeter drainage, sump systems, and grading solutions to prevent erosion and future leaks. Our foundation and drainage services stop subsurface moisture and safeguard the structure for the long term.
Water intrusion can weaken the structure you rely on. We remove rot-affected materials, rebuild framing to code, and restore load-bearing strength with durable lumber and proper integration. RainWise ensures your home’s bones are sound, not just covered with new finishes.
RainWise installs and replaces windows of all types — fiberglass, Fibrex®, vinyl, and traditional wood. We work with trusted brands like Andersen, Marvin and Milgard, ensuring each installation is properly flashed, integrated with siding, and fully sealed against water intrusion.
After repairing the root cause, RainWise restores interiors to pre-damage condition — or better. From drywall, trim, and paint to finish carpentry and woodwork, we complete the job with craftsmanship that matches your home’s character and style.
Moisture creates the perfect environment for mold, which can harm both your home and your health. At RainWise, we don’t just remove mold — we stop it from coming back.
Stopping water is not about one trade — it’s about the entire building envelope. We integrate every system to work as one.
Root-Cause Resolution
We don’t guess or apply temporary patches. We analyze the entire system and resolve the underlying failure so it doesn’t return.
Comprehensive Integration
Roofing, siding, windows, gutters, and drainage must work together. We ensure proper tie-ins and transitions across trades.
Precision + Longevity
Guided by building science and delivered with artisan craftsmanship for durable, code-correct results.
19+ Years Solving Leaks
Over 19 years of trusted experience solving leaks and water damage issues.
Diagnose first, then integrate everything — roof to foundation — so leaks don’t
return in Portland & Lake Oswego.
+1 503-805-7925 Many contractors cover problems without fixing the source. At RainWise, we diagnose leaks using building science and repair them permanently — from roofing and siding to foundations. We don’t just patch — we protect your entire home.
Both. If a repair is enough, we’ll do it. But if water damage has compromised your roof, siding, or windows, we provide full replacements designed for long-term leak protection.
Signs include stains on ceilings or walls, musty smells, warped siding, cracked stucco, or soft spots in wood. Even small leaks can lead to dry rot or foundation issues. Our free inspection identifies problems early.
Yes. We provide detailed documentation, photos, and repair plans that help homeowners with insurance claims for water and storm damage.
With proper installation, roofing lasts 20–30 years, Hardie siding up to 50 years, and premium windows decades longer. Our drainage and foundation solutions are designed for permanent protection.
Yes. We back our projects with strong warranties on both labor and materials, so you can trust your investment to last.
Most leaks found in one visit
Proudly Serving Residents In:
Lake Oswego, Portland, Tigard, Tualatin, Durham, Canby, Salem, Alameda, Beaverton, Forest Hights, Hillsdale
+1 503-805-7925 
