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Over Spanned Floor Joists 

Navigating through sagging, tilting, and bouncing floors is a safety hazard and an inconvenience, often caused by over spanned floor joists in the crawl space. If you are experiencing these problems, it is important to contact a professional for inspection.  

Preserving the structural integrity of your home hinges on identifying and rectifying floor joist problems. BQ Basements & Concrete specializes in offering premium crawl space repair solutions tailored for over spanned floor joists, such as SettleStop™ IntelliJack™ Crawl Space Jacks, ensuring the stability of your living space. 

This comprehensive guide provides an overview of over spanned floor joists, including causes, solutions, and why BQ Basements & Concrete is your trusted source for crawl space repair in Philadelphia, New Jersey, and Delaware. 

What Are Over Spanned Floor Joists? 

When floor joists are over spanned, the horizontal lumber beams supporting your main floor (the joists) are either spaced too far apart or lack the necessary strength to bear the load. This compromises the overall structural integrity of the floor. 

Over-spanned floor joists lead to a weakened floor structure and various problems, including: 

Ensuring a correct joist span is crucial for maintaining level, sturdy floors that can support the weight of your home, furniture, and daily activities. Addressing this issue is essential to prevent additional damage and maintain the safety and stability of your home. 

What Causes Over Spanned Floor Joists? 

Over spanned floor joists are caused by many factors, including: 

  • Crawl Space Moisture: Excessive moisture, humidity, and dampness in the crawl space can gradually warp wooden joists, resulting in sagging. 
  • Infestation by Pests: Pests such as termites have the capacity to consume joist material, thereby weakening their support. 
  • Foundation Settlement: When the foundation settles, shifts, or sustains damage, it imparts uneven stress onto the joists. 
  • Construction Deficiencies: In certain instances, inadequate spacing of joists during the initial construction of the home can lead to insufficient support. 
  • Aging: Over time, the floor and joists may weaken if they lack the necessary supplemental support. 

It’s essential to promptly address these factors to prevent further damage and maintain your home’s structural integrity. Routine inspections and maintenance are proactive measures that detect potential issues before they escalate, saving you valuable time and money in the long term. 

Can You Fix Over Spanned Floor Joists? 

Yes, over spanned floor joists can be fixed. It’s crucial to address this issue promptly to prevent further damage and ensure the safety and stability of your home. 

However, stopgap measures such as sistering joists or adding light-duty posts often fail to fully stabilize a weakened floor. DIY repairs and big-box store products can also be risky and costly. 

Successfully addressing over-spanned floor joists demands a thorough strategy that guarantees sufficient support for the entire structure. BQ Basements & Concrete offers tailored solutions to stabilize, support, and protect against additional damage, preserving the long-term integrity of your home. 

How BQ Basements & Concrete Fixes Over Spanned Floor Joists 

Our team remedies over spanned floor joists using these steps: 

  • Inspect the area for damage, determining the cause and appropriate crawl space repairs. 
  • Cut steel IntelliJack™ supports to fit the crawl space. 
  • Place a durable concrete base in the crawl space. 
  • Assemble IntelliJack™ components, connecting to the base and floor joist. 
  • Adjust the support jack to stabilize and potentially lift floors. 
  • Waterproof the area with a crawl space sump pump. 
  • Conceal vents and replace doors. 
  • Insulate crawl space walls. 
  • Encapsulate the crawl space with a thick vapor barrier. 
  • Dehumidify the crawl space. 
  • Schedule annual maintenance to ensure the systems’ longevity. 

BQ Basements & Concrete provides a range of exclusive solutions tailored to tackle your crawl space concerns, surpassing offerings from competitors and delivering optimal outcomes for your home. While the IntelliJack™ focuses on resolving structural issues, our other crawl space essentials target moisture issues that lead to floor joist damage. 

Why Address Over Spanned Floor Joists Now 

Addressing the repair of over spanned floor joists is crucial for many reasons, including: 

  • Prevent Further Damage: Addressing over-spanned floor joists now prevents further damage and ensures the longevity of your home’s structure. 
  • Ensure Safety: A stable floor structure is vital for your home and family’s safety. 
  • Maintain Home Value: Fixing structural issues helps maintain and potentially increase the value of your property. 
  • Avoid Costly Repairs Later: Addressing the issue now can save you from more expensive repairs in the future. 

Trust BQ Basements & Concrete for tailored products that remedy over spanned floor joists. These solutions deliver the dependable support your home requires. 

Contact BQ Basements & Concrete for Crawl Space Repair Solutions 

Don’t ignore sagging and uneven floors caused by over spanned floor joists. Trust BQ Basements & Concrete to resolve these issues with a free inspection and expert repair options. 


The duration of over spanned floor joist repair hinges on factors such as the extent of damage, the area’s size, and the chosen method of restoration. BQ Basements & Concrete’s installation teams are dedicated to working efficiently, aiming to keep disruptions to a minimum while ensuring timely completion of repairs. For a precise project breakdown, schedule a free inspection.

Over spanned floor joist repair costs vary depending on the severity of the damage and the required solutions. BQ Basements & Concrete offers free inspections, no-obligation estimates, and various financing options, so you can get the repairs you need without breaking the bank. 

We strongly advise against attempting DIY repairs on over-spanned floor joists. Doing so could jeopardize your home’s stability and your personal safety. Opting for a professional crawl space solution ensures quick, effective, and high-quality repairs, providing peace of mind.  

Contact BQ Basements & Concrete for a free inspection and detailed repair estimate. 

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Our Locations


1227 Liberty St., Suite 206
Allentown, PA 18102

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


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Montgomeryville, PA 18936

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