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.
Follow STEPs 3a-7a above. At this point, the raised bed's freeze protection frame is basically finished. This setup should be strong enough to hold up frost cloths, frost blankets, or plastic coverings. They can be held in place with weights on the ground, or with clamps attached to the PVC pipe. gardener's gallery.