Crawl Space Repair
Portland Metro, Oregon Coast and Surrounding Areas
Free Estimates
Over 40 Years of Experience
Superior Customer Service
(503) 610-6268
CCB#219837
Professional Crawl Space Repair Services
Foundations First Northwest specializes in solving crawl space issues using high-quality materials, including durable vapor barriers, steel adjustable posts, and other proven solutions designed to protect your home from the ground up. If your crawl space shows signs of rot, mold, moisture, or structural damage, contact us right away to schedule an inspection and protect the integrity of your home.
A compromised crawl space can affect every part of your home’s foundation and structural integrity. Contact us for a free estimate!
Crawl Space Issues and Your Home Foundation
Your crawl space is often out of sight and out of mind—until problems emerge. Yet issues beneath your home can quietly undermine structural integrity and affect your foundation. Our goal is to restore stability, prevent further damage, and create a healthier home environment through professional crawl space repair.
Why Crawl Space Problems Matter?
Crawl Space Problems Can Become Costly if Left Untreated
Crawl spaces are vulnerable areas of your home. When issues go unaddressed, they can quickly escalate into serious and expensive problems:
Moisture Infiltration & Water Damage
Rain, groundwater, and poor drainage can allow water to seep beneath your home. Without prompt attention, moisture intrusion can lead to foundation damage and costly repairs.
Rot, Decay & Mold Growth
Persistent moisture promotes fungus, mold, and dry rot in sill plates, joists, and subflooring. When structural components are compromised, professional foundation repair may be required.
Sagging Floors & Structural Stress
Failing support posts and weakened joists can cause floors above to sag or feel bouncy. These symptoms often indicate foundation settlement issues and may require helical piles or steel adjustable posts.
Poor Indoor Air Quality
Air from a damp crawl space rises into living areas, carrying mold spores, allergens, and musty odors. Crawl space encapsulation helps create a healthier indoor environment.
Higher Energy Costs
Gaps, drafts, and inadequate insulation allow heat loss in winter and heat gain in summer. Proper crawl space insulation improves energy efficiency and lowers utility bills.
Pest Intrusion
Moisture, cracks, and openings attract rodents and insects. Installing a quality vapor barrier and sealing the crawl space helps keep pests out.
Increased Foundation Stress
Uneven soils, hydrostatic pressure, and shifting support conditions beneath the home can worsen foundation issues. Foundation waterproofing and drainage solutions reduce this risk
Crawl Space Challenges
Because of our Pacific Northwest climate homes in area face specific crawl space challenges:
- Seasonal Moisture Swings Soil expands and contracts with moisture changes, affecting crawl space stability and foundation settlement.
- Surface Water Runoff Water not properly diverted away from the home creates crawl space moisture problems.
- Poor Original Ventilation Old or inadequate crawl space ventilation allows moisture buildup and requires crawl space encapsulation solutions.
- Failing Vapor Barriers Old crawl space vapor barriers that have torn, shifted, or become ineffective need replacement with new basement crawl space vapor barrier systems.
- Inadequate Drainage Missing or undersized drainage solutions require professional foundation repair contractors to install proper systems.
Moisture is often the primary cause of crawl space problems in Oregon and Washington. Without proper crawl space vapor sealing, moisture can lead to a cascade of related issues, including mold growth, wood rot, and structural damage.
Comprehensive Crawl Space Repair Solutions
When you choose us for crawl space repair, you get a comprehensive, tailored solution. Our services include:
Foundation Inspections and Diagnostics:
We perform a thorough foundation inspection, including precise measurements, moisture readings, and an in-depth structural assessment to accurately identify damage and determine its root cause.
Moisture Control and Drainage:
Our team installs perimeter drains, interior drains, sump pumps, and grading solutions to control water at the source. Effective drainage is critical to foundation waterproofing and long-term protection against water damage.
Crawl Space Vapor Barrier Installation:
We install heavy-duty vapor barriers along crawl space floors and walls, fully sealing seams and penetrations. These basement and crawl space vapor barrier systems block soil moisture and water vapor intrusion, improving indoor air quality and protecting structural components.
Structural Support and Leveling:
We utilize steel adjustable posts, helical piles, and reinforced beams to correct sagging joists, re-level floors, and reestablish proper load transfer. These proven foundation repair methods reduce the risk of ongoing or future settlement.
Wood Repair and Decay Mitigation:
Rotted sill plates, joists, and headers are replaced or reinforced, restoring structural stability. We also apply treatments to slow future decay and protect your home from ongoing moisture damage.
Crawl Space Insulation and Air Sealing:
To improve airflow and reduce energy loss, we seal crawl space penetrations, vents, and rim joists, and install proper insulation where needed. This helps maintain a more energy-efficient and comfortable home while protecting your crawl space from moisture and drafts.
Pest and Entry Sealing:
Gaps, vent openings, and cracks are sealed or screened to prevent rodents and insects from entering, complementing our vapor-sealed crawl space solutions.
Crawl Space Cleaning:
Professional cleaning removes debris, old insulation, and contaminated materials before new vapor barriers and insulation are installed, ensuring a healthy and safe crawl space.
This integrated approach ensures your crawl space is not just patched—it’s fully restored as a healthy, functional, and energy-efficient component of your home’s foundation.
Crawl Space Repair Questions Answered
What are the signs of foundation problems?
Common warning signs include cracks in the foundation, doors or windows that are hard to open or close, cabinets that won’t stay shut, cracks in sheetrock or plaster, uneven floors, and cracked tile or countertops. These issues often worsen over time if left unaddressed.
Will crawl space repair disturb my landscaping or home interior?
We plan carefully to minimize disruption, protect your yard, and limit interior impact. Most work is done beneath the house, and cleanup is part of our foundation repair service.
How long do crawl space repairs last?
With high-quality materials, proper design, and preventative drainage controls, correctly executed crawl space repair can last for decades.
Can I DIY crawl space repairs?
DIY fixes may address symptoms but often miss underlying causes. Without skilled evaluation and structural work from foundation repair contractors, problems may recur or worsen. For lasting results, hire professionals experienced in crawl space repair.
Do you offer crawl space cleaning services?
Yes, professional crawl space cleaning is often the first step before installing new vapor barriers and insulation. We remove debris, old materials, and contaminants.

Signs Your Crawl Space Needs Repair
Contact our foundation contractor team if you notice:
- Drywall cracks in the interior (may indicate foundation settlement repair needs)
- Uneven or sagging floors
- Moisture or standing water in crawl space
- High indoor humidity levels
- Wood rot or structural decay
- Unexpectedly high energy bills
- Musty odors from beneath the home
- Signs of animals or pests
- Visible mold or mildew
- Damaged or missing crawl space vapor barrier
These warning signs often indicate problems that require both crawl space repair and foundation repair services.
Call Us!
Free Crawl Space Repair Estimates
Our foundation contractor team is ready to help with all your crawl space and foundation needs. Schedule your free inspection today.
Why Choose Foundations First Northwest for Crawl Space Repair
If you’ve been searching for crawl space repair turn to Foundations First Northwest. We take pride in offering quality services with outstanding results.
- Over 40 Years of Combined Experience Our foundation repair contractors bring decades of expertise to every crawl space and home foundation repair project.
- Comprehensive Solutions From crawl space encapsulation to foundation waterproofing, we handle all aspects of crawl space and foundation issues.
- Quality Materials We use premium vapor barriers, crawl space insulation, and support systems designed for Pacific Northwest conditions.
- Complete Service Our foundation repair service includes inspection, diagnosis, repair, and ongoing support. We handle everything from crawl space cleaning to structural reinforcement.
- Customer Commitment We’re 100% committed to customer satisfaction. Whether you’ve noticed interior cracks or musty odors, we’ve got you covered.
- Local Expertise As an experienced foundation repair company serving Portland and surrounding areas, we understand local soil conditions, climate challenges, and building requirements.
What Professional Crawl Space Services Provide
Structural Protection: Proper crawl space repair helps prevent foundation settlement and shields your home from moisture-related damage.
Improved Indoor Air Quality: High-quality vapor barrier systems help block mold spores and allergens from entering your living space.
Energy Efficiency: Crawl space insulation and air sealing reduce energy loss, lower utility bills, and improve overall comfort.
Year-Round Moisture Control: Professional foundation waterproofing keeps your crawl space dry in every season.
Pest Prevention: Sealed crawl spaces with durable vapor barrier systems help stop rodents and insects from entering your home.
Foundation Longevity: Drainage improvements and structural support systems reduce the need for future foundation settlement repairs and extend the life of your foundation.
Long-Term Home Value: Expert foundation and crawl space solutions protect your investment and help prevent costly repairs down the road.
Get Your Free Crawl Space Repair Estimate
Don’t wait until crawl space damage turns into a major problem. Whether you’re noticing a small crack or facing a more serious foundation concern, contact us today to schedule a no-obligation inspection.
Our team will accurately diagnose the issue and recommend solutions that restore structural strength, improve indoor air quality, and reduce long-term risk. Our crawl space repair services are designed to prevent future moisture damage while protecting your home’s foundation.
We use proven repair techniques and durable materials to seal your crawl space from outside elements, helping keep moisture, pests, and humidity under control. Whether your home is newly built or decades old, a clean, dry crawl space can reduce allergens, lower energy costs, and create a healthier living environment.
Don’t let minor issues become costly repairs. Trust our experienced foundation repair contractors to deliver honest evaluations and long-lasting crawl space repair solutions—customized to meet your home’s specific needs.
Client Testimonials
Here’s what our satisfied customers are saying:
Lawrence B
Karen K
Amazing experience!! They did an excellent job of removing dead electrical panels, cleaning out the basement, and installing water/vapor barriers. Everyone was so professional and efficient. They truly went above and beyond and I am forever grateful for their outstanding service, generous spirits and kind hearts. Thank you so much!!!



I used Foundations First NW to correct some deteriorating piers in my daughter’s basement. They did great work. They had an enormous crew who got the job done in a day. The pricing was super fair. Joe Smith knows what he’s doing, and I’ve referred him and his company at least 20 times since they completed the work for me. I’ll continue to do so.