Abn0rmal
22.04.2021 19:22:42
I got my old fiberglass tanks out and took the old floor out as well. It did not appear all that old but was put down with drywall screws, was not resined, and had mold on it.
See full version: What size plywood for floor
I got my old fiberglass tanks out and took the old floor out as well. It did not appear all that old but was put down with drywall screws, was not resined, and had mold on it.
I came across some other issues that I would like to fix while the boat is at this stage so was thinking about changing the thread title. I don't know if I can do that. here
Thanks for the input. I bought 3/4 AC ply for the job, along with resin. I cleaned out the area where the old tanks were mounted yesterday. I also cut out the bulkheads between the stringers that were just in front of the engine and up near the dash. Both appear to have been replaced prior or put in by a PO. They weren't prepped well so I want to do it right. more
It really depends on the boat design. In some applications you can eliminate structure by going 3/4". It can save both labor and material compared to 1/2" installations while giving a major increase in strength. I'm doing a project now and the 3/4" ply doesn't need stiffeners like the 1/2" did. Weight gain about the same as one sheet of 1/2" ply (approx 60 sq ft x 1/4" on a 17'r). more
I am sure NathanY finished his boat long ago, NateB. more
i work at boston whaler and 3/4 would be the best for a strong and long lasting floor [links]
Thanks alot guys.. Looks like i will be using 1/2 inch.. <br /><br />later, <br /><br />Big-E more
When you fiberglass or epoxy the plywood, it gets an awful lot stiffer. I built a hatch out of two sheets of 3/16" cheap plywood laminated together. Although the plywood faces were sanded to near nothingness and it was supported about 28" out, it came out really good with hardly any flex. Now mind you it has camber so you can't really compare. But it gives you an idea.<br /> http://www.shareaproject.com/pages/projectTut,p,93,00.html more
P to S.. an you'd be thinkin' very wrong .. <br />it's tremendous strenght.. [links]
glue an screw a good DOUG-FIR 2x4 width-wise on edge underneath of the plywood..at mid-point..doesn't have to 100 % all-the-way across.. <br /><br />tremendous strenght.. more
I need to replace a piece of wood on the front of my pontoon boat.(which has rotted through) Do I use marine plywood, which is very hard to find in my area, or can I use another type of plywood ?<br />Thanks,<br />Steve
I think the quality of the material is much more important than the thickness. I would rather use 1/2" marine grade PW than 3/4" CDX. [links]
It really depends on the boat design. In some applications you can eliminate structure by going 3/4". It can save both labor and material compared to 1/2" installations while giving a major increase in strength. I'm doing a project now and the 3/4" ply doesn't need stiffeners like the 1/2" did. Weight gain about the same as one sheet of 1/2" ply (approx 60 sq ft x 1/4" on a 17'r).