Installing the Subfloor

Once the engineering has been done, the framer can lay out the T.J.I.’s and start installing the subfloor. After all, you can’t start with the other framing steps before you get the subfloor installed!

The T.J.I.’s need to be properly nailed to the sill place and anchored with hurricane straps if applicable to your area. Use of these straps in all areas is a good constriction practice, as it only makes the entire package stronger.

Selection of the proper subfloor material is important as some materials do not hold up well to getting wet while under construction. Some don’t have the structural integrity needed for your application and some won’t hold nails properly to hold down future hardwood flooring, etc. IN most cases if material less than ¾” thick is used, it may sag over time between the joist. All subfloor must be blocked properly, including the ends. All subfloor must be glued down, then nailed per specs provided by the material manufacturer.

After the home is dried in and the subfloor has dried completely, it is good practice to go back and screw the floor down every 6” in both directions. This will help prevent squeak and will further strengthen the floor system.

Once this step is complete, you’re ready to move on to the next step: framing the walls.