Installing The Floor System

Finally starting to build the "Mini Camper".

First item of business - Building the floor. 

After cutting out the ramps from underneath the trailer and removing a few of the floor boards from the trailer, it was time to start building the floor. The floor will consist of treated 2x4 joists and Advantech sub flooring. Advantech had the best warranty of sub flooring with a 500 day rain no sand warranty.

I installed the 2x4 joists side to side the length of the trailer, boxing in as needed for future plumbing.

I used 3.5" deck screws to screw the joists together because I have had much better luck with them over nails in my camper building experience.

To secure the floor joists to the trailer I used Headlok 4.5" Screws. These screws are rated to take the place of lag bolts. 

From underneath the trailer I ran the Headlok screws through the trailer floor boards into the floor joists. 

I did this across the front and back of the trailer and down both sides into each floor joist.

After getting the floor joists built, fastened together, and fastened to the trailer the next step was to fasten the sub-flooring to the floor joists.

I used 2.5" deck screws for this step. Running screws approximately 8" apart.

Next up - Time to start building walls!