Advice needed on delamination repair

fourthclassC wrote:
Gorrilla glue is difficult to work with because of the swelling and the stickieness- but if fill voids to completely support panels. It will make a mess if not clamped/restrained properly (also so the clamps do not stick) But it is waterproof when dried and the correct adheasive for this application in my opinion and from my actual experience. Before I used it I contacted Gorrilla Glue company and they said the glue will last longer then the substrates I was using.

Gorilla glue or any of the polyurethane glues are messy to work with at least for me. Epoxies provide a stronger bond. The problem with these type of repairs is that if the delamination is caused by water intrusion the moisture is likely to be still be under the laminate and not many adhesives adhere well to wet surfaces. Polyurethane glues will react to the moisture and foam up making a mess when they expand and lose some of their bond strength but still be stronger than the substrate they are bonding to. Solvents like Mek or Acetone can help to remove some of this moisture before bonding. They will absorb the moisture then flash off quickly. If you can remove the outer skin like Joe showed and know the substrate is dry I would use an epoxy if you are doing a local repair like under a window that leaked and it is wet or moist underneath I would use a polyurethane. I did not remove the outer skin and used the side of a brick building to retract the pressure using car jacks. The lessen I learned was to use the leveling jacks on the MH first before applying pressure with the car jacks.