Welcome to Part 2 of our DIY travel trailer build on the Harbor Freight Haulmaster 5×10 modular trailer. In this episode, we move on to one of the most important steps of the build — constructing the travel trailer floor. After completing the Harbor Freight trailer assembly in Part 1, we now focus on building the floor frame and installing vinyl flooring to create a strong, durable foundation for our camper.

We walk through the process of designing and building the floor frame for the Haulmaster 5×10, including layout considerations, framing techniques, and preparation for future walls and interior components. We then finish the floor by laying vinyl flooring, a popular choice for DIY travel trailer builds thanks to its water resistance, durability, and ease of cleaning.

In this video, you’ll see:

• Building the floor frame on a Harbor Freight Haulmaster 5×10 trailer
• Preparing the trailer for a DIY travel trailer conversion
• Installing vinyl flooring in a camper trailer
• Tips for weight management and floor durability
• Progress in our Haulmaster 5×10 DIY travel trailer build series

If you’re planning a DIY travel trailer build, converting a Harbor Freight Haulmaster trailer, or looking for inspiration for a budget-friendly camper trailer, this video shows a practical, real-world approach to building a solid floor system.

Be sure to watch Part 1 for the full trailer assembly and subscribe to follow the complete DIY travel trailer build series, including wall framing, insulation, electrical, and interior finishes.

DIY Camper Build on Harbor Freight Trailer Playlist

All of the Products Used to Build Our Camper

Great Outdoor Depot – Camping Gear, Outdoor Clothing and More!

Sportsman Warehouse – Boating, Camping, Hunting, Fishing and Outdoor Gear