Portland Oregon · Mold Removal & Remediation Experts
About MoldShieldPros
We help Portland homeowners and businesses identify, remove, and prevent mold by finding the moisture source first — not just treating what is visible. Honest assessments. Written estimates. Root cause fixed.
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★★★★★ 5.0 · Portland Homeowners
Who We Are
A Portland Mold Company Built on Honesty
MoldShieldPros is a mold removal and remediation company serving Portland, Oregon and the surrounding metro area. We focus specifically on mold removal, mold inspection, and moisture control — not as a side service, but as our entire focus.
What sets us apart is a simple approach: we do not just remove what is visible. We identify why the mold is there in the first place. Whether it is passive crawl space venting drawing saturated air into your floor joists, a bath fan terminating inside your attic, or clay soil pushing moisture through your foundation — we find the source and address it directly.
Portland’s wet climate — with its 144 rainy days, October-through-May moisture season, and aging pre-1940 housing stock — creates mold conditions unlike most other U.S. cities. We built our service specifically around these conditions. We know which neighborhoods have groundwater table issues. We recognize Cladosporium on Douglas fir floor joists from years of seeing it in SE and NE Portland bungalows.
We serve both residential and commercial properties. We give written estimates with specific dollar figures before any work begins. We tell you honestly when you do not need us. And when you do, we document everything, correct the moisture source, and arrange independent clearance testing after the job is complete.
At a Glance
🏠 Residential & Commercial
📍 Portland Metro & SW Washington
📝 Written Estimates Always
🔍 Root Cause Identification
🔒 Independent Clearance Testing
💬 Same-Day Response Available
✅ Honest Assessments — Even If You Do Not Need Us
Our Brand Promise
“Honest. Certified. Root Cause Fixed.”
Our Mission
Building Healthier Indoor Environments in Portland
Our mission is straightforward: help Portland homeowners and businesses live and work in spaces free from mold, excessive moisture, and the indoor air quality problems that come with them. We do this through professional assessment, honest recommendations, and long-term moisture correction.
Assess First
Every job starts with a thorough inspection. We map moisture levels and identify the source before recommending any work.
Write It Down
You receive a written scope with a specific price before we start. No verbal quotes. No surprise invoices.
Verify the Result
Every remediation is followed by independent clearance testing — a third party confirming the job was done correctly.
Our Values
What We Stand For
Every decision we make comes back to these eight principles.
Integrity
We give honest assessments and tell you when you do not need our services.
Transparency
Written scope. Specific price. No surprises. You always know what we found and what it costs.
Safety
Proper containment, HEPA filtration, and EPA-registered treatment on every job.
Professionalism
On time. Careful with your property. Everything documented. Clear communication throughout.
Education
We explain what we found in plain language so you can make informed decisions.
Customer First
We schedule around your timeline and prioritize real estate deadlines.
Long-Term Solutions
We correct the moisture source so the mold does not return next season.
Respect for Property
Containment is clean, removal is careful, and we leave the space tidy.
Local Expertise
Why Portland Homes Need Specialized Mold Solutions
Portland is one of the wettest major cities in the continental United States. With an average of 144 rainy days per year and a moisture season from October through May, the conditions for mold growth are present in most Portland homes every single winter.
A large portion of Portland’s housing stock was built before 1940 — particularly in SE Portland, NE Portland, North Portland, and the inner westside. These homes use passive foundation vents designed for drier climates. In Portland, those vents draw cold, saturated outdoor air directly into crawl spaces, where it condenses on floor joists and subfloor sheathing every winter.
Portland’s native soil is Willamette silt loam — clay-dominant and nearly impermeable. Rain that falls in October does not drain away. It accumulates against foundation walls and pushes moisture inward through concrete and brick. Homes near Johnson Creek and the Columbia Slough face this regularly.
Attic mold is another Portland-specific problem. Bath fans in mid-century homes frequently terminate inside the attic rather than routing to an exterior cap — depositing humid shower air directly onto cold OSB sheathing. One or two Portland winters is enough to produce significant growth.
Portland Mold Risk Factors
144 rainy days per year on average
High concentration of pre-1940 passive-vented homes
Willamette silt loam clay soil holds water against foundations
Crawl spaces with passive venting draw moisture-laden air inside
Attic mold from bath fans terminating inside the roof cavity
Johnson Creek and Columbia Slough corridor flood zones
Older plumbing in pre-war homes prone to slow hidden leaks
The MoldShieldPros Difference
We built our service around Portland’s specific climate, soil, and housing stock. When we inspect a 1920s bungalow in Irvington, we know exactly what to look for and where. That local knowledge shortens every assessment and improves every outcome.
What We Do
Our Services
Every service starts with an honest assessment and a written estimate.
Black Mold Removal
Stachybotrys and dark mold species. Proper containment, HEPA filtration, and EPA-registered treatment.
Learn More →Attic Mold Removal
Bath fan venting and ventilation issues. We fix the source and remove the mold.
Learn More →Crawl Space Mold Removal
Portland’s most common mold job. Passive-vented crawl spaces in pre-1940 bungalows.
Learn More →Basement Mold Removal
Clay soil hydrostatic pressure and brick foundations in NE and North Portland.
Learn More →Mold Remediation
Full remediation: containment, physical removal, drying, treatment, and clearance testing.
Learn More →Mold Inspection
Not sure if you have mold? Start here with moisture meters and thermal imaging.
Learn More →Crawl Space Encapsulation
Sealed foundation vents and reinforced vapor barrier eliminate the moisture cycle.
Learn More →Moisture Control
Humidity management, condensation control, and vapor barrier installation.
Learn More →How We Work
Our Process — Start to Finish
Every job follows the same structured approach. No shortcuts. No skipped steps.
Inspection
Moisture meters, thermal imaging, full visual assessment. Written scope before any work.
Identify Moisture Source
Passive venting, disconnected bath fan, plumbing leak, clay soil infiltration — found before work begins.
Professional Remediation
Containment, negative air HEPA scrubbing, physical removal, EPA-registered antimicrobial treatment.
Cleaning & Containment
Structural drying returns materials to normal moisture. Containment removed only when moisture readings confirm.
Prevention Recommendations
Moisture source corrected. Independent clearance testing. Written recommendations for long-term prevention.
Why Choose Us
Why Homeowners Choose MoldShieldPros
Eight reasons Portland property owners call us — and refer us to their friends and realtors.
Local Portland Knowledge
We know which neighborhoods have groundwater issues and what Portland winters do to crawl spaces. That local knowledge shows in every assessment.
Honest Written Estimates
Written estimate with a specific dollar figure before you decide anything. No verbal quotes. No ranges. No surprises.
Root Cause Focus
We find what is causing the mold. Without correcting the moisture source, any treatment is temporary.
Moisture Expertise
Moisture meters, thermal imaging, and deep understanding of Portland’s clay soil, passive venting, and humidity patterns.
Residential & Commercial
Homeowners, landlords, property managers, and commercial tenants across Portland metro and SW Washington.
Fast Response
Same-day response for real estate deadlines and emergencies. We know Portland closing timelines.
Professional Communication
Written scope, clear timeline, direct answers. You are never left guessing what happens next.
Long-Term Prevention
Every job includes recommendations — crawl space encapsulation, ventilation correction, drainage referrals — so mold does not return.
Service Areas
Where We Serve
Not sure if we serve your area? Call us — the answer is almost certainly yes.
Portland (Primary)
→ Portland — All Neighborhoods
→ SE Portland — Hawthorne, Sellwood, Woodstock
→ NE Portland — Alberta, Irvington, Hollywood, Alameda
→ North Portland — St. Johns, Kenton, Arbor Lodge
→ NW Portland — Pearl District, Nob Hill
→ SW Portland — Multnomah Village, Hillsdale
Portland Metro
→ Beaverton
→ Hillsboro
→ Gresham
→ Tigard
→ Lake Oswego
→ Milwaukie
→ Oregon City
SW Washington
→ Vancouver WA
→ Camas
→ Washougal
→ Hazel Dell
→ Salmon Creek
Serving Portland metro and SW Washington.
Check Your Area →FAQ
Frequently Asked Questions
Answers to the questions Portland homeowners ask most often about mold removal and our company.
What is MoldShieldPros and what does the company do?
MoldShieldPros is a Portland-based mold removal and remediation company. We inspect properties for mold and moisture, identify the moisture source, remove contaminated materials, treat affected structures, and verify results with independent clearance testing. We serve both residential and commercial properties throughout Portland metro and SW Washington.
Does MoldShieldPros give free estimates?
Yes. We provide free on-site assessments and written estimates at no charge. You receive a specific dollar figure before we ask you to make any decision. No obligation to proceed.
How is mold remediation different from just cleaning mold?
Mold remediation is a complete process: finding the moisture source, containing the work area, physically removing all contaminated porous materials, treating surfaces, drying structural components, and verifying results with independent lab testing. Simply cleaning visible mold without correcting the source means the mold returns within one or two seasons.
Why is Portland particularly prone to mold problems?
Portland averages 144 rainy days per year with a moisture season from October through May. A large portion of Portland’s housing stock predates 1940 and uses passive foundation venting that draws saturated outdoor air into crawl spaces. Portland’s clay-dominant soil holds groundwater against foundations.
Do you fix the moisture problem, not just the mold?
Yes — always. We identify and correct the moisture source on every job. Treating mold without fixing the source is not a service we provide.
Do you serve commercial properties?
Yes. We serve homeowners, landlords, property managers, and commercial tenants across Portland metro and SW Washington. Commercial assessments follow the same protocol — written scope, specific price, independent clearance testing.
What is independent clearance testing?
After remediation, a third-party industrial hygienist — with no financial relationship to us — collects air samples from the treated area and sends them to an accredited lab. If spore counts are at or below outdoor ambient levels, a written clearance report is issued. We do not self-certify our own work.
How quickly can you respond to a real estate deadline?
We schedule on-site assessments within 24–48 hours. For real estate transactions with closing deadlines or active water damage, we prioritize same-day or next-day response. Tell us the timeline when you call.
Ready to Get Started?
Ready to Protect Your Property from Mold?
Request your free estimate today and speak with a local Portland mold specialist. Written scope. Honest assessment. Independent clearance testing on every job.
Mon–Sat 7AM–6PM · Emergency Response Available · Portland Metro & SW Washington