Should I paint the Azek trim on my house?  It's a common question today.  In the past exterior trim was made of wood (typically pine) that was subject to rot, insects, and maintenance painting every few years.  Contractors have been specifying to homeowners and property owners PVC trim more and more with Azek as the leading choice.  Azek is a very good product that is impervious to moisture and insects but it is more expensive.  To keep the additional cost of the trim material in the project budget, some contractors are "selling" homeowners on the idea you don't have to paint azek.  Homeowners appreciate saving the expense on paint, but are often suprised a couple of years later when there home looks like it needs to be painted.