Abstract: A prefabricated cover board has a high-density polymer or predominantly polymer material core layer having a density between 4 lbs/ft3 and 25 lbs/ft3. A prefabricated roofing panel composite includes the cover board and an insulation board that has a low-density polymer or predominantly polymer material foam core layer preferably having a density less than 2.5 lbs/ft3. The cover board may have a waterproofing membrane forming the top major surface of the cover board. When making the roofing panel composite, the low-density foam core layer of the insulation board may be formed with the high-density core layer of the cover board being currently or subsequently formed over and bonded to a top major surface of the low-density foam core layer in the same operation or preformed insulation boards may be fed into a production line with the high-density core layer of the cover board being formed over and bonded to top major surfaces of the low-density foam core layers of the insulation boards.

Abstract: A durable, moisture and insect resistant fence system made from fiber cement is provided. The fence system includes one or more fiber cement pickets aligned between two posts that are anchored to the ground. The fiber cement pickets are formed into the desired shape and dimension prior to curing of the fiber cement. One end of the pickets can be formed into popular pickets designs such as square cut, dog-eared, French gothic, scalloped, pointed, and saw-toothed. The fence system can be easily assembled using conventional techniques such as nailing or stapling. The fiber cement pickets can be formed to resemble conventional fence pickets made from natural wood, masonry, or other materials. Patterns, textures, finishes and designs are applied to the pickets using man-made processes so that the pickets have a consistent appearance.