| 20080217947 | RECREATIONAL VEHICLE ROOFING SYSTEM - A roof system for a mobile occupancy structure having a roof substrate and a roof member mounted to the mobile occupancy structure may include a roof membrane having at least one thermoplastic vulcanizate (TPV) membrane layer affixed to the roof substrate. The roof system may also include a sealant disposed about or adjacent the roof member with the sealant being adhered to the TPV membrane layer. The TPV membrane layer includes a TPV polymer bonding additive and the sealant includes a sealant polymer bonding additive with the TPV polymer bonding additive and sealant polymer bonding additive interacting to promote adhesion of the sealant with the TPV membrane layer. The sealant may be a substantially solid sealant having at least approximately 90% solids by weight prior to being applied about the roof member. | 09-11-2008 |
