ACRYLIC vs. Gel-Coat Fiberglass. Acrylic. One piece construction with dome. This adds strength to the unit and eliminates post installation. damage, no seams to caulk and gather mold and mildew, dome eliminates ceiling maintenance. Non porous surface, Easy to clean, no pores to catch soap, dirt, body oils.
In cold frame gardening, a cold frame is a simple structure that usually works like a mini-greenhouse. It has a wooden frame with a transparent roof made from glass and is always constructed low to the ground to provide proper insulation.
Protecting Your Plant Pots in Winter. If you live in a colder area, some of your garden's plant containers may not make it through the cold winter. Some containers will do fine outside on the balcony, but many materials will absorb water, which will freeze and expand. Then the plant container will become brittle and crack, break or flake.