Park the RV next to a wall or fence. Drill holes along the top of the delaminated area. Alternate spaces going down to the bottom of the delamination.
Fill the syringe with the resin. Inject the resin into the top holes until it shows up at the bottom holes. Keep injecting resin and moving down the delamination area until the bottom holes are showing resin coming out of them.
Wipe off any excess resin while applying pressure to the wall of the RV. Place the drop cloth over the delaminated area. Place the board over the plastic drop cloth.
Wedge the board against the fixed area using the 2-by-4 inch board and the wedges. Allow the resin to dry overnight.