The Cons of Plywood
Plywood has limitations for long-term storage applications. Exposed to the elements it can warp, split, and even rot over time. This will leave the flange face exposed and allow debris access to the internal components of your piping assets. Treated plywood that is more resistant to the elements, will siphon moisture and hold it on the flange face accelerating rust and corrosion. When your piping assets are shipped into or out of the country, you must use plywood treated to kill insects or fungus and it must have the ISPM-15 stamp. A pallet of plywood will take up valuable space in your warehouse. If it is stored outside, treated, and untreated plywood can warp making it hard to work with. Also, when cutting round parts from a rectangular sheet, your waist on the material can be 30-50%. Another thing to consider is, the actual amount of time it takes to cut these by hand and what that craftsman is costing you. Many facilities are highly safety conscious and limit the use of saws and drills exclusively to highly skilled labor, making the labor the highest cost of plywood protectors.