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Open Crawl Space Vents

Initially thought to keep air flowing in your crawl space, open vents are now known to actually cause moisture issues below your home. They can be substituted with more efficient, safer alternatives. 

With our extensive experience and dedication to long-term solutions, AFS tackles the issues caused by open vents effectively. Our team converts your crawl space into a secure, moisture-free, and energy-efficient area. 

This page will walk you through the history of crawl space vents, the difficulties they present, and the advantages of professional, tailored repairs for your home. 

What Are Open Crawl Space Vents? 

Originally intended to meet building regulations and combat moisture, open crawl space vents are based on outdated construction norms. Yet, these vents often lead to more issues than they resolve, including: 

These problems can significantly jeopardize your home’s structural soundness and your health. If you observe these symptoms or spot open vents on your house, it’s crucial to contact crawl space professionals like AFS immediately. 

Why Your Home Has Open Crawl Space Vents 

Until the mid-20th century, it was a common belief that installing vents in crawl spaces would improve air flow and reduce moisture and dampness. More recently, this has been proven incorrect.  

Studies in the 1990s showed that these vents allow moisture and dampness to enter and negatively affect a home’s energy efficiency, making consistent indoor temperatures hard to maintain. 

As a result, the use of crawl space vents has decreased significantly in recent decades. Building codes have evolved to include vent sealing and crawl space encapsulation. 

Today, sealing these vents is a standard practice after a thorough crawl space inspection. Closed vents are recognized as a more effective way to create a dry environment in the crawl space. 

Can You Fix Open Crawl Space Vents? 

Indeed, open crawl space vents can be effectively remedied. However, trying to simply cover them with DIY methods won’t cut it; a comprehensive home solution is essential for enduring results. 

Addressing this issue requires a holistic approach, considering every aspect of your crawl space. Sealing crawl space vents as part of a complete encapsulation system can turn your damp, unhealthy crawl space into a clean, dry, conditioned area. 

With over 20 years of experience in resolving crawl space moisture issues, our specialists at AFS are adept at identifying the underlying causes in your home and implementing thorough repairs tailored to your needs. 

How to Fix Open Crawl Space Vents 

The most straightforward method to tackle open crawl space vents is through crawl space encapsulation. AFS’s step-by-step crawl space encapsulation process includes: 

By choosing AFS, you select a solution tailored to your needs, supported by our proprietary products, designed for superior performance and durability. 

Why Address Open Crawl Space Vents Now 

Addressing open crawl space vents promptly is crucial for several reasons, including: 

  • Preventing Structural Damage: Early intervention can save on expensive repairs. 
  • Enhancing Indoor Air Quality: A sealed, dry crawl space contributes to a healthier living environment. 
  • Improving Energy Efficiency: Proper insulation and sealing can lead to significant energy bill reductions
  • Avoiding Pest Infestations: Pests are less attracted to a dry crawl space. 
  • Boosting Property Value: Homes with resolved crawl space issues are more appealing to buyers. 

AFS’s specialized solutions combine expertise with high-quality products for industry-leading results. 

Contact AFS for Dependable Crawl Space Solutions 

If your home has open crawl space vents, don’t delay in addressing the issue. AFS offers the necessary products, diagnostics, and expertise to fully encapsulate your crawl space. 

Our unique products and comprehensive approach distinguish us from standard encapsulation options. Reach out to us today to schedule a free crawl space inspection and receive a no-obligation repair estimate. 


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