Skip to Main Content

BQ Basements & Concrete is now  GroundworksLearn more.

Open Crawl Space Vents

Once celebrated for their assumed ventilation benefits, open crawl space vents are now replaced with safer, more efficient alternatives. 

Formerly considered a solution for moisture and ventilation issues, open crawl space vents have been found to contribute to these very problems. If left unaddressed, these vents lead to dampness, inadequate ventilation, and hazards, including mold growth, pest infestations, and more. 

With years of expertise and a commitment to lasting solutions, BQ Basements & Concrete addresses the challenges of crawl space issues. Our dedicated team specializes in exclusive crawl space encapsulation services, transforming your crawl space into a secure, dry, and energy-efficient haven. 

This page provides insights into open crawl space vents, their problems, and how professionally installed and customized crawl space repairs can benefit your home. 

What Are Open Crawl Space Vents?  

Open crawl space vents, formerly seen as a conventional practice to avert moisture problems, are now acknowledged as outdated and ineffective. They were established based on building codes that have been subsequently revised, and they frequently contribute to the very issues they were designed to alleviate.  

Open crawl space vents introduce more problems than they solve, resulting in issues such as: 

These problems can severely threaten your home’s structural integrity and health. If you notice any signs of crawl space issues or open vents on your home’s exterior, it’s crucial to contact crawl space experts like BQ Basements & Concrete for prompt and effective solutions. 

Why Does Your Home Have Open Crawl Space Vents? 

Once considered a standard practice, crawl space vents were widely installed in homes until the mid-20th century under the belief that they would enhance air circulation and prevent moisture buildup. However, this notion has been proven wrong. Modern research has shown that crawl space vents are more likely to exacerbate moisture problems and energy inefficiency than resolve them. 

Studies conducted in the 1990s revealed that these vents allow for the intrusion of dampness and moisture, leading to increased energy consumption and difficulty maintaining consistent indoor temperatures. As a result, the use of crawl space vents has significantly declined in recent decades. Building codes have also evolved to reflect this change, with vent sealing and crawl space encapsulation becoming increasingly common practices. 

Covering crawl space vents is a standard procedure for improving crawl space conditions. Sealing them off is a more practical approach to promoting a healthier environment within the crawl space, provided that artificial air circulation is implemented. 

Can You Fix Open Crawl Space Vents? 

Open crawl space vents can be addressed, but a simple cover-up won’t provide lasting results. A comprehensive whole-home solution is necessary to achieve the desired results. 

It’s crucial to approach this issue holistically, ensuring that all aspects of your crawl space are thoroughly evaluated. Sealing crawl space vents as part of a comprehensive encapsulation system can transform your damp, unhealthy crawl space into a clean, dry, and conditioned space. 

Our experts at BQ Basements & Concrete have over three decades of experience in resolving crawl space moisture issues and delivering permanent solutions. We possess the expertise to diagnose the root causes in your home and implement tailored repairs to address your specific needs. 

How to Fix Open Crawl Space Vents 

The most straightforward solution for dealing with open crawl space vents is through crawl space encapsulation. However, it involves more than simply blocking or covering the vent. 

BQ Basements & Concrete follows a step-by-step crawl space encapsulation process that includes: 

By choosing BQ Basements & Concrete, you opt for a tailored solution backed by our proprietary products, designed to outperform and outlast the alternatives. 

Why Address Open Crawl Space Vents Now 

It’s crucial to promptly address open crawl space vents for various reasons, such as: 

  • Prevent Structural Damage: Addressing the problem prevents potentially expensive future repairs. 
  • Enhance Indoor Air Quality: A sealed and dry crawl space contributes to a healthier living environment. 
  • Improve Energy Efficiency: Proper insulation and sealing results in noticeable energy bill savings. 
  • Avoid Pest Infestations: A dry crawl space is significantly less appealing to pests. 
  • Enhance Property Value: Homes with resolved crawl space issues are more appealing to potential buyers. 

BQ Basements & Concrete integrates specialized expertise with superior products to achieve industry-leading results. 

Contact BQ Basements & Concrete for Reliable Crawl Space Solutions 

Don’t let your crawl space remain a forgotten, neglected area of your home. Let BQ Basements & Concrete transform this valuable space into a healthy and functional asset. We have the expertise, tools, and advanced products to encapsulate your crawl space, safeguarding your home’s foundation and creating a healthier environment for your entire living space. 

Our process begins with a thorough crawl space inspection to identify the root causes of existing damage. Then, we customize solutions to your home’s unique needs. Unlike generic store-bought solutions, we employ products and a holistic approach that addresses the underlying issues, ensuring long-lasting protection and a healthier crawl space. 

Embark on the journey of reclaiming your crawl space and safeguarding your home’s well-being. Contact BQ Basements & Concrete for a free crawl space inspection and a no-obligation repair estimate.  


While possible, DIY vent covering can lead to long-term issues. BQ Basements & Concrete offers comprehensive crawl space encapsulation services to address the root causes of moisture problems, ensuring a healthy and dry crawl space for your home. Contact us for a free inspection and estimate. 

We prioritize minimizing disruption to your property and daily life, typically completing projects within a few days. Embrace the benefits of a healthier crawl space with BQ Basements & Concrete’s efficient and comprehensive crawl space repair services. 

Schedule a free inspection today to receive an accurate project timeline and a no-obligation estimate. 

Crawl space vent repair costs fluctuate depending on your crawl space’s size, condition, and the necessary repairs. Choosing professional solutions from BQ Basements & Concrete provides value for your investment and lasting outcomes. We offer free inspections, repair estimates, and financing options. Contact us for more information. 

BQ Service Area Map

Our Locations


1227 Liberty St., Suite 206
Allentown, PA 18102

New Jersey

535 Route 38 East, 149E
Cherry Hill, NJ 08002


106 Park Drive
Montgomeryville, PA 18936

West Chester

1503 Mcdaniel Dr., Suite 4
West Chester, PA 19380