CDX plywood can also be classed as “Exposure grade 1”. This means it is a dampproof plywood used for demanding construction environments, such as underlayment and roof sheeting. Therefore, it can be exposed to rainfall and moisture during construction without causing significant damage to the ...
The materials that you’ll need are 2x4s, 3/4-inch plywood, 1 1/2-inch thick foam, glue, staple gun, weather-resistant screws, circular saw and/or saber saw, a drill, piano hinge, tar paper, metal drip edge, hammer, roofing nails, roofing cement, and asphalt shingles. The first an...