For those who are more environmentally concerned, fiberglass tends to be the best option. Fiberglass is usually made up of up to 60% of recycled glass. Vinyl cannot be painted white, so if that is the color that you wanted for your home, you will have to turn to fiberglass. Vinyl does not need to be repainted, while fiberglass does, so if this is something you want to avoid, vinyl could be the right choice. Learn more.