Ultimate Guide: How to Jack Up Floor from Crawl Space Like a Pro!

How to Jack Up Floor from Crawl Space

If you have noticed sagging floors in your home, it may be a sign that the floor joists in your crawl space need attention. Jacking up the floor from the crawl space can be a complex task, but with the right techniques and tools, it can be accomplished effectively.

Assessing the Situation

Before proceeding with any structural work, it’s crucial to assess the condition of the floor and the crawl space. Look for signs of decay or damage in the floor joists, rotten wood, or sagging areas. If there are any visible cracks or structural issues, it’s advisable to consult a professional contractor to evaluate the situation.

Steps to Jack Up the Floor

1. Clear the Crawl Space

Start by removing any debris and clearing out the crawl space. This will provide better access to the floor joists and ensure safety during the jacking process.

2. Identify Support Points

Locate the areas where the floor is sagging and identify the points where the floor joists need support. This will help in determining the number and placement of jacks needed.

3. Use Proper Lifting Technique

When placing the jacks, make sure to distribute the weight evenly and avoid overloading any single point. Slowly raise the floor to the desired level using the jacks, and monitor the progress closely to prevent any further damage.

4. Reinforce and Secure

Once the floor is jacked up to the correct level, consider reinforcing the floor joists if necessary. Additionally, secure the jacks in place to maintain the support and prevent future sagging.

Benefits of Jacking Up the Floor

Jacking up the floor from the crawl space can restore the structural integrity of your home, eliminate sagging, and provide a level surface for flooring installation. It can also prevent further damage and save you money in the long run by addressing the issue before it worsens.


Dealing with sagging floors can be a daunting task, but with the right knowledge and approach, jacking up the floor from the crawl space can be a manageable project. However, it’s important to exercise caution and consider seeking professional help if needed to ensure the safety and stability of your home.

Written by Best Floor Jack

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