ted655
08-31-2006, 04:01 PM
The SS Scrodge was a 50' X 14' X 4' scow barge. Made of ACQ treated lumber & ACQ plywood. I fell heir to her after the "builder" became imbroiled in a divorce & left the area. I took over the lease on the building site & got the barge in the deal.
Since then I have been trying to research the feaseability of completing the project. I realizwd I would have to refasten the whole hull with ACQ suitable screws. The previous builder had used regular deck screws. While an inconveince, I was more concerned with a suitable coating for the hull.
:mad: Just had an interesting chat with a tech support fellow. He is tech support for a large company that sells many coatings & adhesives.
http://www.epoxysystems.com/
They will not recomend ANY product for ACQ treated lumber. This we knew from earlier posts, (nothing new). What is new (to me anyway) is the fact that SOME marine plywoods are also not recomended as underlayments for coatings. Urethanes, polys or epoxys. The culprits are insecticides & fungacides that are often added to some marine plywoods.
Regular AC grade exterior grade plys are OK. That being said, I quizzed him on prices for suitable coatings for underwater use. All were very expensive! Most requred an expensive primer, which all but doubled the cost per sq. ft. $80 to $120 per 3 gallon units were average costs (less shipping). Average coverage was 80 sq. ft., with 2 coats recomended. Pricey!
As a result of this, I am sad to say but the SS Scrodge is dead. I will strart cutting her up into small chunks next week. Nearly $2,000 in materials ,( many weeks of labor) wasted. We even have to be careful of the bonfire because of the fumes.
After pricing steel, aluminium, wood (and its coatings), rotocast plastic pontoons, I think it is better (for me anyway) to buy something used.
Since then I have been trying to research the feaseability of completing the project. I realizwd I would have to refasten the whole hull with ACQ suitable screws. The previous builder had used regular deck screws. While an inconveince, I was more concerned with a suitable coating for the hull.
:mad: Just had an interesting chat with a tech support fellow. He is tech support for a large company that sells many coatings & adhesives.
http://www.epoxysystems.com/
They will not recomend ANY product for ACQ treated lumber. This we knew from earlier posts, (nothing new). What is new (to me anyway) is the fact that SOME marine plywoods are also not recomended as underlayments for coatings. Urethanes, polys or epoxys. The culprits are insecticides & fungacides that are often added to some marine plywoods.
Regular AC grade exterior grade plys are OK. That being said, I quizzed him on prices for suitable coatings for underwater use. All were very expensive! Most requred an expensive primer, which all but doubled the cost per sq. ft. $80 to $120 per 3 gallon units were average costs (less shipping). Average coverage was 80 sq. ft., with 2 coats recomended. Pricey!
As a result of this, I am sad to say but the SS Scrodge is dead. I will strart cutting her up into small chunks next week. Nearly $2,000 in materials ,( many weeks of labor) wasted. We even have to be careful of the bonfire because of the fumes.
After pricing steel, aluminium, wood (and its coatings), rotocast plastic pontoons, I think it is better (for me anyway) to buy something used.