THE 10 BEST Moisture Control Services in PORTLAND, OR
| Business Name | Key Services | Best For | Address | Hours | PS Rating |
|---|---|---|---|---|---|
| New Leaf Crawl Space Solutions | Crawl space restoration, vapor barriers, drainage, sump pumps | Comprehensive crawl space solutions | 11615 NE 72nd Ave Suite B, Vancouver, WA 98686 | Mon-Fri: 8:00 AM – 5:00 PM, Sat-Sun: Closed | 4.6/5 |
| TerraFirma Foundation Systems | Foundation repair, basement waterproofing, crawl space encapsulation | Complete foundation and moisture solutions | 13110 SW Wall St, Portland, OR 97223 | Mon-Fri: 8:00 AM – 5:00 PM, Sat-Sun: Closed | 4.5/5 |
| Dr. Crawlspace | Crawl space cleaning, encapsulation, mold remediation | Crawl space health and restoration | 10121 SE Sunnyside Rd Suite 300, Clackamas, OR 97015 | Mon-Fri: 8:00 AM – 4:00 PM, Sat-Sun: Closed | 4.7/5 |
| John’s Waterproofing | Basement waterproofing, crawl space repair, dehumidifiers | Long-term waterproofing solutions | 219 Airport Rd, Silverton, OR 97381 | Mon-Fri: 8:00 AM – 5:00 PM, Sat-Sun: Closed | 4.4/5 |
| SFW Construction | Mold remediation, moisture control, dry rot repair | Mold and moisture elimination | 2552 NW Vaughn St, Portland, OR 97210 | Mon-Sun: 7:00 AM – 7:00 PM | 4.5/5 |
| Better Basements and Waterproofing | Basement waterproofing, sump pumps, foundation repair | Affordable basement solutions | 19100 OR-99E, Oregon City, OR 97045 | Mon-Fri: 7:00 AM – 7:00 PM, Sat: Open, Sun: Closed | 4.8/5 |
| Ability Plus Drainage Company | Drainage systems, French drains, foundation waterproofing | Exterior drainage expertise | 1725 SE Franklin St, Portland, OR 97202 | Mon-Fri: 8:00 AM – 4:00 PM, Sat-Sun: Closed | 4.3/5 |
| Oregon Healthy Homes | Whole-home dehumidifiers, humidity control systems | Indoor air quality and humidity management | Service area includes Portland Metro | Mon-Fri: 8:00 AM – 5:00 PM, Sat-Sun: Closed | 4.4/5 |
| Orkin DryZone | Moisture control, pest prevention, crawl space services | Integrated pest and moisture management | 17912 NE Riverside Pkwy Suite 200, Portland, OR 97230 | Open 24 hours, 7 days a week | 4.2/5 |
| Pacific Waterproofing | Foundation waterproofing, crawl space repair, drainage | Custom moisture solutions | Serves Portland Metro Area | Contact for hours | 4.3/5 |
#1. New Leaf Crawl Space Solutions – Best for Comprehensive Crawl Space Restoration
Key Highlights:
- Family-owned business serving Portland Metro and Southwest Washington with over 10 years of experience
- Offers free crawl space inspections with same-day or next-day service availability
- Provides competitive pricing with a price-match guarantee if you have another bid
New Leaf Crawl Space Solutions stands out as a top choice for Portland homeowners dealing with crawl space moisture problems. The company specializes in turning damp, dirty crawl spaces into clean, dry areas that improve your home’s air quality. Their team handles everything from removing standing water and installing sump pumps to laying new vapor barriers and fixing insulation issues.
What makes New Leaf special is their honest approach. They won’t pressure you into services you don’t need. Many customers praise their thorough inspections where technicians take pictures and clearly explain what needs to be done. The company uses environmentally friendly solutions and stands behind their work with strong warranties.
The crew at New Leaf is known for being professional and respectful of your home. They create protective tunnels when hauling out old materials to keep your living spaces clean. After completing the work, they offer a 30-day follow-up check to make sure everything is working perfectly. This level of care has earned them excellent reviews from Portland area homeowners.
#2. TerraFirma Foundation Systems – Best for Complete Foundation and Moisture Solutions
Key Highlights:
- Serving the Pacific Northwest since 2005 with extensive experience in Portland’s unique soil conditions
- Offers optional 24/7 monitoring system for ongoing peace of mind
- Backed by industry-leading warranties and has helped thousands of homeowners
TerraFirma Foundation Systems is a powerhouse when it comes to protecting Portland homes from moisture damage. They understand that Portland’s clay and silt soil combined with heavy rainfall creates perfect conditions for foundation and moisture problems. The company tackles everything from cracked foundations to wet basements and damp crawl spaces.
TerraFirma’s approach is thorough and scientific. They take careful measurements, inspect your basement or crawl space, check drain systems, and look at all factors affecting your home. This detailed process means they can design customized solutions that actually fix problems for good. Their team uses advanced products like helical piers for foundation repair and high-quality encapsulation systems for crawl spaces.
Portland homeowners appreciate TerraFirma’s transparency and professionalism. The company has earned recognition as a top workplace in Oregon multiple times, which shows they treat their employees well. This positive culture translates into better service for customers. While their prices can be higher than some competitors, many homeowners feel the quality and warranties make it worth the investment.
#3. Dr. Crawlspace – Best for Crawl Space Health and Restoration
Key Highlights:
- Established in 2014 as a family-owned business focused on superior customer service
- Provides free quotes for known issues and offers 5% discount for active military and veterans
- Known for thorough inspections and honest recommendations that save customers money
Dr. Crawlspace has built a solid reputation for transforming unhealthy crawl spaces into clean, efficient areas. Their mission is simple: change your crawl space from damp, dirty, and exposed to dry, clean, and sealed. They handle all types of crawl space work including drainage installation, vapor barrier replacement, mold treatment, and insulation upgrades.
What customers love most about Dr. Crawlspace is their honesty. Technicians won’t push unnecessary services on you. Many reviews mention inspectors telling homeowners they don’t actually need major work right now, which builds tremendous trust. When work is needed, the crew is known for being courteous, efficient, and respectful of your property.
The company uses industry-leading products to ensure your crawl space stays dry and energy-efficient. They properly seal all penetrations, install closed-cell foam insulation, and use high-quality vapor barriers that last. Dr. Crawlspace also controls humidity to prevent mold from coming back. Their attention to detail and commitment to doing things right has made them a favorite among Portland area homeowners.
#4. John’s Waterproofing – Best for Long-Term Waterproofing Solutions
Key Highlights:
- Over 50 years of experience since 1974, making basements and crawl spaces healthy
- Uses 21 patented products and has won 15 innovation prizes for their systems
- Offers comprehensive services including radon testing, electrical work, and standby generators
John’s Waterproofing brings decades of expertise to moisture control problems in Portland homes. As a family-owned business based in Silverton, they serve the entire Portland Metro area and beyond. They’ve worked on high-profile projects like the US Court House in Eugene and the President’s Mansion at Linfield College, proving their capabilities on challenging jobs.
The company specializes in both basement waterproofing and crawl space repair using proven Basement Systems products. Their SaniDry dehumidifiers are Energy Star rated and far more powerful than store-bought units. These systems automatically drain collected water and shut off when humidity reaches the right level, saving you money on energy costs.
John’s Waterproofing stands out for their complete approach to home protection. Beyond waterproofing, they offer structural support, crawl space encapsulation, and even Cummins home standby generators for power outages. Their crews are known for being professional, punctual, and thorough. The company backs their work with strong warranties and maintains high integrity standards, earning them a BBB Torch Award for Ethics.
#5. SFW Construction – Best for Mold and Moisture Elimination
Key Highlights:
- Portland’s mold contractor specialist since 2005 with extensive building science knowledge
- Certified by DuPont Tyvek for weather-resistant barrier installation
- Offers complete solutions from moisture source identification to final repairs
SFW Construction takes a different approach to moisture control by focusing on the root causes. They understand that Portland’s 43 inches of annual rain creates numerous moisture intrusion points. As experts in siding, dry rot, and building envelopes, they can identify almost every possible place moisture might enter your home.
The company uses industry-leading air movers and drying equipment to eliminate moisture after water exposure. They employ three types of air movers (centrifugal, axial, and compact) to thoroughly dry affected areas and wall cavities. But SFW doesn’t stop at removing moisture and mold. They also repair the building envelope problems that caused the issue in the first place.
What makes SFW special is their comprehensive service. As a fully licensed general contractor, they can handle everything from mold removal to siding repair to painting. This means you work with one company for the entire project rather than coordinating multiple contractors. Portland homeowners trust SFW because they don’t just cover up problems. They solve them permanently.
#6. Better Basements and Waterproofing – Best for Affordable Basement Solutions
Key Highlights:
- Family and veteran-owned company established in 2022 with over 10 years of combined experience
- Works Saturdays for customer convenience when most contractors don’t
- Offers 3-year warranty on full drainage projects with honest, fair pricing
Better Basements and Waterproofing started because the owner saw friends and family receiving proposals that either didn’t make sense or had outrageous prices. They focus on proven waterproofing methods used for nearly 100 years rather than gimmicky proprietary systems. Their goal is simple: a dry home forever, maintenance free.
The company prides itself on putting customers first. They won’t push you into expensive solutions you don’t need. Many customers report that Better Basements was much more honest and communicative than other contractors they consulted. The team explains exactly what they’ll do and why, which helps homeowners make informed decisions.
Better Basements handles both basement and crawl space waterproofing using reliable methods like interior drainage systems and sump pumps. They also offer foundation repair with American-made steel floor jacks. The company works efficiently, often completing projects within a week of approval. Their prices are competitive without sacrificing quality, and they offer financing through Wisetack to make projects more affordable.
#7. Ability Plus Drainage Company – Best for Exterior Drainage Expertise
Key Highlights:
- Over 30 years of experience specializing in drainage solutions for Portland Metro area
- Thorough assessments that take 10-30 minutes to gather notes for accurate quotes
- Licensed, bonded, and insured with strong reputation for quality work
Ability Plus Drainage Company focuses on one critical aspect of moisture control: keeping water away from your home. They understand that proper drainage is the foundation of preventing water accumulation in basements and crawl spaces. The company specializes in crawl space drainage, roof and stormwater management, basement waterproofing, and surface water management.
What sets Ability Plus apart is their expertise in difficult drainage problems. They’ve solved issues that other contractors couldn’t figure out. Their team hand-digs trenches when necessary, sometimes going 7 feet deep to properly install French drains below foundation cold joints. They use advanced materials like soil-separating fabric to prevent drain clogging and extend system life.
Customers appreciate Ability Plus for their professionalism and fair pricing. The company doesn’t give high-pressure sales pitches or push expensive solutions you don’t need. Instead, they listen to your problems, propose solutions that make sense, and answer all your questions. Many reviews mention the owner personally making multiple trips to ensure customer satisfaction. They also offer financing options to help with project costs.
#8. Oregon Healthy Homes – Best for Indoor Air Quality and Humidity Management
Key Highlights:
- Specializes in whole-home humidifiers and dehumidifiers integrated with HVAC systems
- Serves the entire Portland Metro area including Beaverton, Hillsboro, and surrounding cities
- Focuses on improving overall comfort and efficiency through proper humidity control
Oregon Healthy Homes takes a different approach to moisture control by addressing the air quality throughout your entire home. They understand that portable humidifiers and dehumidifiers can’t support a home’s total humidity requirements. Instead, they install whole-home systems that control humidity in all the conditioned air flowing through your house.
The company helps homeowners understand the importance of proper humidity levels. When indoor humidity exceeds 60%, your home becomes susceptible to mold and mildew growth. High humidity also makes the air feel much hotter than the actual temperature. Oregon Healthy Homes installs both steam and evaporative humidifiers to add moisture when needed and whole-home dehumidifiers to remove excess moisture.
By maintaining proper humidity levels year-round, Oregon Healthy Homes helps Portland residents improve comfort, reduce static electricity, prevent mold growth, and lower energy costs. Their team works during standard business hours Monday through Friday and accepts all forms of payment. The company’s focus on indoor air quality makes them an excellent choice for homeowners dealing with moisture problems that affect the entire house.
#9. Orkin DryZone – Best for Integrated Pest and Moisture Management
Key Highlights:
- Over 120 years of pest management experience with nationwide presence
- Combines moisture control with pest prevention in comprehensive programs
- Available 24/7 with flexible scheduling and next-day service options
Orkin DryZone offers a unique approach by recognizing the connection between moisture and pest problems. Their moisture management program is designed to prevent high moisture levels that lead to pest issues, rot, and increased allergies. This integrated approach means you’re protecting your home from multiple threats at once.
The Orkin DryZone process starts with a thorough investigation checking for moisture, rot, and structural damage. Your Orkin Pro will perform a comprehensive inspection and document any moisture problems with photos. They then recommend a customized program based on your home’s specific needs, construction type, and geographic location.
Services can include cleaning out spaces, sealing vents, installing moisture-blocking polypropylene barriers, and installing devices to condition the air. Orkin provides detailed reports of moisture control services and recommendations to protect your home from mold. They stay in touch between regularly scheduled visits to respond to immediate needs. The company’s long history and 100% satisfaction guarantee give Portland homeowners confidence in their services.
#10. Pacific Waterproofing – Best for Custom Moisture Solutions
Key Highlights:
- Provides both interior and exterior waterproofing solutions for comprehensive protection
- Offers free evaluations to assess situations before committing to services
- Uses data-driven approach with thorough inspections and testing
Pacific Waterproofing understands that there’s no one-size-fits-all solution for foundation and water issues. That’s why they specialize in all aspects of foundation repair and waterproofing, both interior and exterior. This versatility allows them to properly diagnose problems and implement the correct fix for your specific situation.
The company handles comprehensive basement waterproofing to address the various ways water can enter. They also specialize in crawl space services, recognizing that up to 50% of the air you breathe in your home comes from your crawl space. Their encapsulation systems seal your home from harmful elements that cause poor air quality and structural damage.
Pacific Waterproofing serves the entire Portland Metro area including Beaverton, Hillsboro, Vancouver, and surrounding communities. They use advanced materials and techniques to ensure lasting results. The company offers better warranties than most competitors because they’re confident in their work. Many customers praise Pacific Waterproofing for their exceptional service, quality workmanship, and affordable pricing that doesn’t compromise on quality.
How Much Does Moisture Control Cost in Portland?
Moisture control costs in Portland vary widely depending on the scope of work needed. Simple vapor barrier installation might cost $1,500 to $4,000 for an average crawl space. More comprehensive crawl space encapsulation with drainage and dehumidifier typically ranges from $5,000 to $15,000.
Basement waterproofing projects can be even more expensive. Interior drainage systems with sump pump installation usually cost between $5,000 and $10,000. Exterior waterproofing involving excavation around your foundation might run $10,000 to $20,000 or more. The wide price range depends on your home’s size, accessibility, and the severity of moisture problems.
Factors affecting cost include the square footage of the area being treated, whether excavation is needed, the type of drainage system required, and the quality of materials used. Getting multiple quotes from reputable contractors helps you understand fair pricing for your specific situation. Many companies offer free inspections and estimates, which is helpful for budgeting your moisture control project.
What Are Signs I Need Moisture Control Services?
Several clear warning signs indicate you need professional moisture control help. Musty odors in your basement or crawl space are often the first clue that excess moisture is present. These smells come from mold and mildew growing in damp conditions. If you notice this smell, moisture problems are likely already developing.
Visible signs include water stains on basement walls, efflorescence (white chalky deposits on concrete), condensation on windows, and actual standing water. You might also see mold growth, peeling paint, or warping wood in moisture-prone areas. Inside your home, buckling floors, increased allergy symptoms, and higher than normal energy bills can all signal moisture issues.
Some signs are less obvious but equally important. If you feel excess humidity in your home or notice your air feels clammy, moisture levels are probably too high. Pest infestations, particularly by moisture-loving insects like silverfish or carpenter ants, often indicate moisture problems. Wood rot around windows, doors, or in crawl spaces definitely means moisture is getting where it shouldn’t. Any of these signs warrant calling a professional for an inspection.
How Can I Prevent Future Moisture Problems?
Prevention starts with managing water around your home’s exterior. Make sure your gutters and downspouts are clean and directing water at least 6 feet away from your foundation. Check that the ground slopes away from your house so rainwater doesn’t pool near your foundation. Fix any grading issues promptly to prevent water from flowing toward your home.
Inside your home, maintain your moisture control systems properly. If you have a dehumidifier, empty it regularly or ensure the drain line is functioning. Check your sump pump before heavy rain seasons by pouring water in the pit to make sure it activates. Inspect vapor barriers annually for tears or displacement. Keep crawl space vents functioning properly or sealed if you have an encapsulation system.
Regular maintenance and monitoring help catch small problems before they become expensive repairs. Consider installing a humidity monitor in your basement or crawl space to track levels. Keep indoor humidity between 30% and 50% for optimal comfort and to prevent mold growth. Schedule annual inspections with moisture control professionals to identify potential issues early. Being proactive with prevention saves money and protects your home’s structural integrity and your family’s health.