I am thinking EXTERIOR Rated acrylic based? Maybe a "construction adhesive"? I do know that if you have foam, SOLVENT-BASED contact cements will MELT the foam and require them to be used separately and dried, then applied. (e.g. adhere Filon to Lauan) When repairing my overcab, bought three brands of acrylic in caulk tubes rated for foam, and all appeared EXPIRED/ DAMAGED/ DRIED OUT and/ or FREEZE DAMAGED; ended up w/ acrylic construction adhesive.
(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10