Before I installed the filon, I taped all the seams of the plywood including the edges around the slide opening with a flashing tape. My thoughts on this was it would help to shed the water in the event that was was to get in there. May of been unnecessary but I always error on the side of caution and tend to overdue my projects.
We used DAP CONTACT CEMENT and there is no wiggle room when it comes to this contact cement. I planned out the placement of the filon to have the fewest seams possible while also making sure that my filon seams did not land on my plywood seams. Measure twice cut once! The easiest way I found to cut this stuff was with a jig saw and a fiberglass blade. Once I cut the filon, I would then test fit the piece on the camper and make any necessary changes. In order for the contact cement to work properly, you need to roll or brush a coat on the filon and do the same on the plywood. Once the pieces become tacky, they are ready to be fit on to the camper.
With larger pieces, Brooke would help me to get the fit just right because once the two pieces touch each other, there is no separating them without damaging them. The Filon went on pretty easy as long as we made sure our first contact was where we wanted it. After placement, I used a handheld flooring roller to press the filon on and get out any air bubbles.