what is the best wood to use for underwater applications including plywood before a epoxy application...
wood wood wood
- Thread starter christian15198
- Start date
- Status
Wood?
Is a poor choice for under water applications. I would look at a closed cell plastic instead. After water penetrates any kind of wood you are subject to spreading the problem. Closed cell plastics don't have this problem that is why boat manufacturers are not using wood.
Is a poor choice for under water applications. I would look at a closed cell plastic instead. After water penetrates any kind of wood you are subject to spreading the problem. Closed cell plastics don't have this problem that is why boat manufacturers are not using wood.
Very sorry to hear that wood is not OK underwater
Very sorry to hear that wood is unsuited for use underwater. I design and build wooden boats and so far it has worked out. The best choice of wood depends on what you want to do. All the best, Robert Gainer
Very sorry to hear that wood is unsuited for use underwater. I design and build wooden boats and so far it has worked out. The best choice of wood depends on what you want to do. All the best, Robert Gainer
With thousands of wooden boats sailing
the oceans of this world why would anyone think that wood was not suitable for use under water? When is the last time you saw any plastic pilings? Or a plastic breakwater? The reason most modern boats are made from plastic is economics. There are 100 year old boats sailing the worlds oceans and not falling apart.
the oceans of this world why would anyone think that wood was not suitable for use under water? When is the last time you saw any plastic pilings? Or a plastic breakwater? The reason most modern boats are made from plastic is economics. There are 100 year old boats sailing the worlds oceans and not falling apart.
I guess the true response would be
How will the finial wood be finished..and what material will be used to seal any seam?... There are many good wood species that work in the marine environment, depending on the final application and finish..... there are however, few woods that can be left without some kind of finish,,,,even Iron wood used undewrwater will permeate water eventually. submerged PT wood pilings even rot, I know , we've bumped into a few! But as Robert mentioned wooded boats have been built for centuries using a variety of woods.... The Rockport Marine is a great web site for wood boat building. here is a sample of construction materials from one of their projects, Louise: "Louise Louise, a Buzzards Bay 25, was launched on May 23, 2002. Designed by Nathanael G. Herreshoff, the first four boats were built in 1914 by the Herreshoff Manufacturing Company. This design may have been Herreshoff’s favorite. Construction is Atlantic cedar planking over white oak frames, teak garboards and mohagany sheer strakes with silicone bronze fastenings. Floor timbers, plank keel, and stem are Angelique. The decks are high grade marine plywood sealed with epoxy and dynel cloth. The cabinsides, coamings, and transom are Honduras mahogany and the toerails, cabin and cockpit soles are teak. Her gaff rig consists of sitka spruce spars, rigging by Gambell and Hunter Sailmakers of Camden, Maine, and sails by Roy Downes. Dimensions are LOA 32’; LWL 25’; beam 8’9”; draft (board raised) 3’. Following her sea trials, she was delivered to the Bahamas where she now resides." Even marine plywood has its place, used inside the cabin, below waterline saturated in epoxy... When I was apprenticing in college we built a FOUNDATION of a house with pressure treated sills, studs and sheathing,,,,gooped a mixture of creasote on the exterior, under grade then sheathed that assembly in a clear plastic vapor barrier,,,and backfilled,,,,,,,,,builder said it would last 20 years!!!....wow, most people arnt even finished paying off the mortage by then!...I wonder how that house is doing???? My preference for boat woods??? I love working in Mahogany and white oak and then teak.
How will the finial wood be finished..and what material will be used to seal any seam?... There are many good wood species that work in the marine environment, depending on the final application and finish..... there are however, few woods that can be left without some kind of finish,,,,even Iron wood used undewrwater will permeate water eventually. submerged PT wood pilings even rot, I know , we've bumped into a few! But as Robert mentioned wooded boats have been built for centuries using a variety of woods.... The Rockport Marine is a great web site for wood boat building. here is a sample of construction materials from one of their projects, Louise: "Louise Louise, a Buzzards Bay 25, was launched on May 23, 2002. Designed by Nathanael G. Herreshoff, the first four boats were built in 1914 by the Herreshoff Manufacturing Company. This design may have been Herreshoff’s favorite. Construction is Atlantic cedar planking over white oak frames, teak garboards and mohagany sheer strakes with silicone bronze fastenings. Floor timbers, plank keel, and stem are Angelique. The decks are high grade marine plywood sealed with epoxy and dynel cloth. The cabinsides, coamings, and transom are Honduras mahogany and the toerails, cabin and cockpit soles are teak. Her gaff rig consists of sitka spruce spars, rigging by Gambell and Hunter Sailmakers of Camden, Maine, and sails by Roy Downes. Dimensions are LOA 32’; LWL 25’; beam 8’9”; draft (board raised) 3’. Following her sea trials, she was delivered to the Bahamas where she now resides." Even marine plywood has its place, used inside the cabin, below waterline saturated in epoxy... When I was apprenticing in college we built a FOUNDATION of a house with pressure treated sills, studs and sheathing,,,,gooped a mixture of creasote on the exterior, under grade then sheathed that assembly in a clear plastic vapor barrier,,,and backfilled,,,,,,,,,builder said it would last 20 years!!!....wow, most people arnt even finished paying off the mortage by then!...I wonder how that house is doing???? My preference for boat woods??? I love working in Mahogany and white oak and then teak.
68 year old woodie
setting in my driveway waiting til spring so we can paint her up and sail this summer. There is absalutly nothing wrong with the cedar hull, and after a fresh coat of paint she'll be docked and sailed this summer. Wood was replaced because people didn't want the hastle of working on a wooden boat. There are some really great wooden boats out there, just go to Clayton NY to the antique boat museum.
setting in my driveway waiting til spring so we can paint her up and sail this summer. There is absalutly nothing wrong with the cedar hull, and after a fresh coat of paint she'll be docked and sailed this summer. Wood was replaced because people didn't want the hastle of working on a wooden boat. There are some really great wooden boats out there, just go to Clayton NY to the antique boat museum.
holy moly
wow didn't mean to start a war,i have to do some below the waterline transom work and just wanted to see which wood would work the best with epoxy...
wow didn't mean to start a war,i have to do some below the waterline transom work and just wanted to see which wood would work the best with epoxy...
Christian, There is a long list of durable
wood species. Some are readily available in the Charlotte NC area. Bald cypress is excellent, as is Atlantic white cedar known locally as juniper. Proper name is Chamaecyparis. Depending upon the use, Honduras Mahagony can't be beaten especially where it will show. For framing work live oak is the first choice and black locust and osage orange is next. If the transom needs to carry a heavy outboard motor Then H. Mahagony would be a good choice. If $$$ are a big concern then pressure treated (2.5 pounds per cubic foot) pine will serve. Hope this is more help than the food fight was.
wood species. Some are readily available in the Charlotte NC area. Bald cypress is excellent, as is Atlantic white cedar known locally as juniper. Proper name is Chamaecyparis. Depending upon the use, Honduras Mahagony can't be beaten especially where it will show. For framing work live oak is the first choice and black locust and osage orange is next. If the transom needs to carry a heavy outboard motor Then H. Mahagony would be a good choice. If $$$ are a big concern then pressure treated (2.5 pounds per cubic foot) pine will serve. Hope this is more help than the food fight was.
any marine plywood, would be good.
It has to be marine plywood not exterior plywood! I am not sure what kind of transom work you are doing but the strength of the marine plywood would beat any individual species and probably be more stable. After all, you are going to put epoxy on it... I know a guy that has used 1/4 luan underlayment. He cut a 1' square and soaked it in a laundry tub for about a month and it didn't delaminate. So another option is cheap 1/4 luan that you epoxy together to make the thickness that you want.. r.w.landau
It has to be marine plywood not exterior plywood! I am not sure what kind of transom work you are doing but the strength of the marine plywood would beat any individual species and probably be more stable. After all, you are going to put epoxy on it... I know a guy that has used 1/4 luan underlayment. He cut a 1' square and soaked it in a laundry tub for about a month and it didn't delaminate. So another option is cheap 1/4 luan that you epoxy together to make the thickness that you want.. r.w.landau
How About Old Ironsides for an old woody?
209 year's old! See Link below: http://www.ussconstitution.navy.mil/
209 year's old! See Link below: http://www.ussconstitution.navy.mil/
If you use plywood, use real marine
plywood like Bryunzeel or Okume. It isn't cheap. It must have a BS1088 stamp. These plywoods are very compatible with epoxy. The stuff they sell as "marine plywood" in Canada and the US is not a durable product. BS1088 is no BS. It designates 10 cycles of boiling for 8 hours, then freezing for 8 hours with no delamination.
plywood like Bryunzeel or Okume. It isn't cheap. It must have a BS1088 stamp. These plywoods are very compatible with epoxy. The stuff they sell as "marine plywood" in Canada and the US is not a durable product. BS1088 is no BS. It designates 10 cycles of boiling for 8 hours, then freezing for 8 hours with no delamination.
- Status