Aluminum is a painted metal, and the paint can fade with time. Vinyl's color
goes all the way through the plastic, so there is no fading. Scratches would be
barely noticeable. Aluminum siding can be dented; vinyl resists denting. If a
piece of aluminum siding is damaged, it is difficult to replace. A section of
vinyl siding can be replaced in minutes using a tool that looks something like a
bottle opener.
Vinyl is the preferred siding material and can be installed over almost any
smooth exposed surface, including stucco, brick, block and wood. You cannot
install vinyl over aluminum siding or over any uneven surface material without
major remodeling or demolition.
