How to Underpin a Mobile Home

Underpinning a mobile home is a significant project that requires careful planning and execution. Before you begin, it's essential to obtain any necessary permits and consult with a qualified engineer to ensure the safety and structural integrity of your project. Here are the general steps involved in underpinning a mobile home:

Step 1: Preparation:

1. Assessment: Consult a structural engineer to assess the existing foundation system and determine the underpinning requirements.

2. Clearance: Remove any obstructions around the mobile home, ensuring safe access for equipment.

3. Utilities: Inform local utility companies and disconnect water, gas, and electrical services as needed.

Step 2: Excavating:

1. Excavation: Start digging a trench around the mobile home's foundation. The trench should be deep enough to reach stable soil or as recommended by the engineer.

2. Soil Testing: Inspect the soil conditions and quality. Replace or compact loose or weak soil as needed.

3. Footings: If necessary, construct concrete footings within the trenches to provide a solid base for the underpinning system.

Step 3: Underpinning Structures:

1. Piers: Install the underpinning piers. This may involve concrete piers or steel foundation pillars, as determined by the engineer.

2. Placement: Position the piers underneath the mobile home's support beams or framework. Ensure they're evenly spaced and securely anchored.

Step 4: Lifting:

1. Jacking Equipment: Set up heavy-duty jacks or lifting equipment capable of safely raising the mobile home off its current foundation.

2. Lifting: Gradually lift the mobile home to create space for the new supports. Monitor the level of the home to prevent any uneven lifting.

Step 5: Support System Installation:

1. Placement: Install the appropriate support beams or columns onto the piers. These will support the mobile home's weight and transfer the load to the new underpinning structure.

2. Connections: Securely attach the support beams to the mobile home's frame. Ensure all connections are strong and stable.

Step 6: Backfilling:

1. Material: Fill the trenches around the piers and support system with crushed stone, gravel, or soil. This material should be well-compacted to provide stability.

2. Grading: Grade the surrounding area to slope away from the mobile home to prevent water pooling near the foundation.

Step 7: Final Touches:

1. Repairs: Conduct any necessary repairs or maintenance on the mobile home as needed.

2. Utilities: Reconnect water, gas, electrical services, and any other disconnected utilities.

3. Inspection: Arrange for a final inspection by the structural engineer to verify the project's success and safety.

Remember, underpinning a mobile home is a complex task, and it's crucial to consult with qualified professionals throughout the process. Safety and adherence to local building codes should be top priorities.