Treated plywood is made of softer wood than its marine counterpart to allow better absorption of the chemicals used to protect it from mold and fungi. The chemicals may leach over time into the surrounding area. This can be lessened by application of a sealer of varnish or paint.Click to see full answer. Simply so, what is marine grade plywood?Marine-grade plywood, often simply called marine plywood, is not what it’s often claimed to be. Marine-grade plywood is a specially designed panel made of Douglas fir or Western Larch, according to APA: The Engineered Wood Association. All plies may have knots, but no knotholes.Additionally, can you use pressure treated plywood on a boat? marine plywood is made for striength not rot resistant. pressure treated is made to resist rot. you would use pressure treated plywood perhaps for a seat base to be upholstered over. do I have to use marine grade plywood? Marine Grade Plywood for Boat Building In some ways it would make most sense for the plywood suitable for boat building to be the only plywood with a marine grade label. Alas this is not so. As far as water resistance, plywood that is BS1088 (or better) should be a must in order to ensure long term durability.What kind of wood do you use for a boat floor?Before repairing or replacing wood on your boat, it is crucial to know the structural role the wood will play. Exterior marine surfaces such as decks,gunwales and hardware mounts are fashioned from dense, decay-resistant woods like teak and white oak. Teak has long been popular for its strength and durability.
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