Royal-vinyl-siding-installation-guide, looking for installation guides? look no further. we have installation guides for all products available at royal® building solutions—windows, siding, decking, trim and more.. This manual is published by the vinyl siding institute, inc. (vsi) as a service to the industry. vsi members are manufacturers of vinyl siding and other polymeric, royal building products® offers high profile, low-maintenance siding, trim and decking for every kind of home. explore our design tools and product innovations.