Gino
Premium Subscriber
For the most part…. no glue or silicon is an outdoor product for laminating two completely different substrates together. You’re bound to get warping, bowing and possible delaminating….. eventually. If you don’t want to properly screw sheet aluminum fast, then use Dibond or some composite aluminum substrate to guard against future problems.
Since you think the old wood is alright….. and you still insist upon using the old plywood, make sure ALL the edges are in perfect shape. No holes, voids, cracks or rot should be there if you want to use it again. Should all eight sides pass this test, then sand the faces completely down to bare wood and the edges, refill the edges with outdoor putty sand them and then prime the whole deal again. Two top coats should suffice, wait two days and apply your vinyl and re-install the faces, but I would think two new RTG would be easier and more cost effective for you.
Since you think the old wood is alright….. and you still insist upon using the old plywood, make sure ALL the edges are in perfect shape. No holes, voids, cracks or rot should be there if you want to use it again. Should all eight sides pass this test, then sand the faces completely down to bare wood and the edges, refill the edges with outdoor putty sand them and then prime the whole deal again. Two top coats should suffice, wait two days and apply your vinyl and re-install the faces, but I would think two new RTG would be easier and more cost effective for you.
