Alside represents over seven decades of inspired innovation. Founded in 1947, Alside is a leading manufacturer of vinyl siding and accessories and vinyl windows and patio doors for the residential and commercial remodeling and new construction markets.
Millboard is a manufacturer of premium decking and siding products. Our hand-molded and hand-colored boards have an exceptional natural finish with a wood-free resin-mineral core that is thermally stable, allowing exterior installations to be made with a level of finish that is usually reserved for interior work.