BEST DIY Insulated Subfloor - Van Build Tutorial

Introduction

This tutorial provides a step-by-step guide to creating the best DIY insulated subfloor for your van build. Proper insulation is crucial for maintaining temperature control and comfort in your van. By following these steps, you can achieve a durable and efficient subfloor system.

Step 1: Gather Your Materials

Before starting, ensure you have all the necessary materials and tools:

• Materials

  • 3 sheets of 3/4" Birch Plywood
  • 1"x2" lumber
  • Foam Insulation Board
  • Construction Adhesive
  • Ram Board (for templates)

• Tools

  • Jig Saw
  • Countersink Drill Bit Set
  • Japanese Pull Saw

Having everything ready will streamline the process and minimize interruptions.

Step 2: Measure and Cut the Floor Template

1. Measure your van's floor dimensions to determine the size of the subfloor.
2. Use Ram Board to create a template of the floor:
   • Lay the Ram Board flat on the floor.
   • Trace the contours of your van's base onto the Ram Board.
3. Cut the template using your Jig Saw.

Step 3: Prepare Foam Insulation

1. Cut the Foam Insulation Board to fit within the template:
   • Ensure it fits snugly to prevent any gaps.
2. Adhere the foam insulation to the van floor using construction adhesive:
   • Apply a generous amount of adhesive.
   • Press the insulation firmly into place.

Step 4: Install the Birch Plywood

1. Cut the Birch Plywood sheets to match your template dimensions.
2. Place the plywood over the insulation:
   • Align it carefully to ensure an even fit.
3. Secure the plywood:
   • Use screws and a countersink drill bit to create pilot holes.
   • Screw down the plywood, ensuring it is flush with the insulation beneath.

Step 5: Finish the Subfloor

1. Seal any gaps around the edges with construction adhesive to prevent moisture intrusion.
2. Optionally, sand the surface of the plywood for a smooth finish.

Conclusion

You've successfully created an insulated subfloor for your van build. This structure will enhance your van's comfort and thermal efficiency. As a next step, consider installing flooring material over your new subfloor for added aesthetics and functionality. Happy van building!