Above-Grade Waterproofing for Portland Office Towers, Historic Buildings, Hospitals & Campuses
Commercial Waterproofing Contractors in Portland, OR
Portland’s rain is gentle but relentless. For eight months of the year, light rain and mist keep walls wet almost continuously, so a joint that fails in November can let water seep into a building every day until spring. The water rarely shows up all at once. Instead it shows up as stained ceilings, musty smells, rusting anchors and efflorescence on masonry. Winter wind can push rain sideways on the west and south faces, and the occasional ice storm loads parapets and gutters.
Presto Restoration brings more than 25 years of above-grade commercial waterproofing experience to Portland. Our crews reseal expansion and control joints, replace window and curtain wall perimeter seals, wet glaze older window walls, coat parapets and ledges and treat brick, terra cotta and concrete with breathable repellents on office towers, historic buildings, hospitals and campuses. We also manufacture our own restoration products, including Glass Defender for glass and Leach Stop for precast concrete.
OUR COMMERCIAL WATERPROOFING SERVICES IN PORTLAND
Our Portland waterproofing work runs from a single window that seeps all winter to resealing an entire downtown tower.
Core Waterproofing Services
Joints in Portland buildings sit wet for months, which is hard on any sealant that has started to lose its bond. Once a joint opens, water seeps in slowly and steadily. We remove failed material, dry and prime the joint, repair broken edges and install sealants or preformed systems suited to constant moisture.
Window and curtain wall perimeters are where slow, steady leaks usually start. We replace perimeter sealant, reseal mullions and repair gaskets, and streaked or spotted glass can be cleaned and protected with Glass Defender.
Parapets, copings and ledges stay wet for weeks and grow moss that holds even more water. We clean them, repair cracks and coat them with high-solids silicone that resists standing water and biological growth.
Many Portland office buildings from the 1960s through the 1980s still rely on dry glazing gaskets that have shrunk and hardened. Wet glazing adds a continuous silicone seal between glass and frame and stops slow leaks without replacing the windows.
Concrete and stucco develop hairline cracks that wick in moisture all season long. Elastomeric coatings bridge those cracks and move with the wall, applied at full thickness during the drier months after larger cracks are repaired.
Brick, terra cotta and concrete absorb water steadily through Portland’s wet season. Breathable penetrating repellents cut that absorption while letting moisture already inside escape, which is essential in a climate that rarely dries out.
Specialized Restoration-Waterproofing
Waterproofing is one part of a bigger job. Presto also restores the glass, metal, terra cotta and concrete under the seal using products we make ourselves, so one crew handles all of it.
Precast panels can leach salts that leave white streaks as water dries, and Portland’s long wet season keeps that cycle going. Leach Stop is our treatment designed to reduce it. We clean the deposits, treat the panels and reseal their joints.
Metal panels, copings and frames corrode where water sits against them for months, and every seam relies on sealant. We replace failed joints with sealants made for metal and reseal laps and fasteners.
Our Commercial Waterproofing Process in Portland
Every Portland waterproofing project follows five steps, and you see our findings and pricing before work begins.
Building Envelope Inspection
We inspect joints, glazing, flashings, parapets and masonry on every elevation, including signs of slow, long-term seepage.
Diagnostic Testing
Water tests and moisture readings confirm where water is getting in.
Scope & Specification
Systems are chosen for constant moisture and the materials on your building, then written into a clear scope.
Waterproofing Installation
Installation is scheduled for dry weather windows so sealants and coatings bond and cure.
Project Closeout & Warranty
You receive photos, product data and warranty records.
Talk to Presto About Waterproofing Your Portland Building
Stains that grow all winter, musty rooms or caulking pulling away? Call us or request a quote, and our team will respond to discuss your Portland building.
Why Portland Property Managers Choose Presto for Commercial Waterproofing
Our crews have waterproofed buildings across the country for more than 25 years. In Portland we choose breathable systems for historic masonry and plan installation around dry-weather windows.
Our Local Portland, OR Support Network
A sealed building stays dry longest with a check every fall before the rains settle in. Presto connects Portland owners with a local support network for that everyday care.
For routine upkeep and everyday facility support, owners can also contact our sister companies:
Building Restoration Portland: Hands-on exterior repairs for Portland buildings.
Building Maintenance Portland: Routine maintenance that catches failing joints before the wet season.
Building Services Portland: General commercial building support across Multnomah County.
Recent Restoration Projects in Oregon
Browse Presto’s restoration work in Oregon.
Portland Commercial Waterproofing FAQs
How often should sealants be replaced on a Portland building?
Most joints last 10 to 15 years here, and sooner on west and south walls that take wind-driven rain.
What is the difference between waterproofing and water damage repair?
Waterproofing keeps water out at the exterior. Water damage repair fixes interior finishes after water gets in. We stop the source first so the inside only needs repair once.
Can waterproofing be done while the building is occupied?
Yes. Nearly all the work happens from outside, scheduled around tenants, patients and students.
Can waterproofing be done during the rainy season?
Testing and inspection can happen any time. Sealants and coatings need dry surfaces to bond, so we schedule them for dry stretches, mostly from June through September.
How do I know if waterproofing can wait another year?
Stains that grow through the winter, efflorescence, rust stains or split caulking mean it should not wait another rainy season. If sealants are still flexible and nothing leaks, planned replacement over a few years is usually fine.
Why is breathable waterproofing important in Portland?
Walls here stay damp for months. A coating that traps moisture can cause more damage than it prevents, so we use breathable products on masonry and terra cotta.
Other Portland Building Restoration Services
Keep Water Out of Your Portland Building
One failed joint can let water seep in every day from November to May. Tell us what you are noticing, and we will help you get it sealed in the next dry stretch.
Call us today at 1-800-785-9927 or click Request A Quote.