Here's the senario: I've got an old (1970) glass 19' Deckboat (brand name) with a '82 Johnson 140. The transom is totally rotted and must be replaced. The boat is used only about 30 days a year (when g'kids come for vacation) on a freshwater lake, but used hard those days. It is used to pull slalom ski, tubin' and wake board plus general boating.
I was considering using Sea Cast to replace the old rotten plywood until I determined from Sea Cast calculator that I would need about $600 worth of Sea Cast - probably a good fix, but the budget can't justify it (transom is 93" wide). Marine plywood is pretty difficult to find in Southwest Missouri. I'd probably have to special order it which would jump the cost due to shipping. Pressure treated plywood is typically too wet and might take too long to dry and not give me much time to complete the project before the boat is needed.
I replaced the deck 2-3 years ago with 3/4" Avantec subflooring which is a dense OSB type material with water resistant glue. I sealed the deck with a coating of resin and topped it with a layer of glass & resin. The deck shows no sign of deterioration.
Here's my question: Has anyone had any experience using this type material (Avantec subflooring) for transom replacement? Would two laminated 3/4" layers be strong enough? I was thinking of painting it with CPES then using polyester resin and glass to reconstruct the transom pretty much the way it was.
I was considering using Sea Cast to replace the old rotten plywood until I determined from Sea Cast calculator that I would need about $600 worth of Sea Cast - probably a good fix, but the budget can't justify it (transom is 93" wide). Marine plywood is pretty difficult to find in Southwest Missouri. I'd probably have to special order it which would jump the cost due to shipping. Pressure treated plywood is typically too wet and might take too long to dry and not give me much time to complete the project before the boat is needed.
I replaced the deck 2-3 years ago with 3/4" Avantec subflooring which is a dense OSB type material with water resistant glue. I sealed the deck with a coating of resin and topped it with a layer of glass & resin. The deck shows no sign of deterioration.
Here's my question: Has anyone had any experience using this type material (Avantec subflooring) for transom replacement? Would two laminated 3/4" layers be strong enough? I was thinking of painting it with CPES then using polyester resin and glass to reconstruct the transom pretty much the way it was.
