Using Coosa
 

Curious to hear how Coosa panels were used in Transom replacement. Specifically whether two 3/4 inch panels were used or was one 1-1/2 inch thick panel used. Interested in pros or cons on using one panel instead of two. Also what other types of foam core panels have been used in replacing marine plywood in the transom.

Professor

Re: Using Coosa
 

I have never used coosa but I'm also about to possibly replace a floor with it. Just wondering what pound coosa everyone has used for a floor and is coosa overkill? By the way professor if you need a good deal on some Coosa or any other core material for that matter let me know, I have some good connections.

Re: Using Coosa
 

hobson,

i might be needing some coosa. care to share your connection?

as for the original question, better to go with 2 thinner panel with a layer of mat between. this would allow the panel to conform better to the shape of the transom. the layer of may between the layers would promote better resin hold-up and thus bonding. bottom line is you want to get as much bonding between the panel and the old glass.

Re: Using Coosa
 

Professor,

I bonded a sheet of 1.5" AND .5" bluewater coosa to create a 2" core.I have also replaced my deck with .5" bluewater 26 with two layers of 1708 on the top. I am going to put a layer of 6oz. glass on top of the 1708. There is no give in that deck whatsoever.The coosa is great stuff to work with, but the fiberglass is B-t-h to sand. I have been using 40 grit on a DA sander to fair the deck. Where in NE Florida are you? I am in the Avondale section of Jacksonville.

Re: Using Coosa
 

I think I may have mentioned this before, but the two samples of Coosa that I got in the mail both measured 20mm thick. I replaced my SeaCraft tramsom from the outside and I would not have been able to get two layers of 20mm Coosa in around the edges without a lot of sanding and beveling.
I ended up using 24# Penske Board. It was light weight, easy to cut and shape, glued up well (epoxy), but it was expensive (but I guess all of the composites are).

Re: Using Coosa
 

I used one panel of 1 1/2" bluewater 26. End result was fine. Two years of use no issues.
http://www.myfishingpictures.com/img/107435.jpg

Re: Using Coosa
 

I was quoted 170.00 per sheet for .5 nautical 24 in Tampa today

Re: Using Coosa
 

Hobson.....ditto on needing some coosa.....would like to know your connection.

Re: Using Coosa
 

i was quoted abouit $216 for 3/4" bluwater 27# from a dealer in new orleans.

Re: Using Coosa
 

CLR,

I am in Jacksonville out by the Intracoastal Waterway between JTB and Beach. I used to live on Avondale Ave. west of Park St.

Would be very interested in seeing the progress on your floor.

Professor

Re: Using Coosa
 

I used one piece of the 1-1/2 inch blue water coosa for my transom (20 sf). I found it very easy to work with; shaping and forming was a breeze with the jig saw and grinder. I'm pretty sure it bonded well to the inside skin of the transom. I reinforced the corners of the hull and bottom and put two layers of 1708 on the inside skin before installing. The existing transom was nice and flat as was the coosa and I made sure it fit just right before installing.

[image]http://i91.photobucket.com/albums/k3...s/DSC00560.jpg[/image]

[image]http://i91.photobucket.com/albums/k3...s/DSC00723.jpg[/image]

Re: Using Coosa
 

It seems that there are several variations of composit board for glass work. what is the diference between these composit boards and the honeycomb style boards and does anybody know anything about using it for decking?

Re: Using Coosa
 

If you go to the manufacturers web sights they will explain the purposes of each of their lines of products and their purposes. A composite designed for a deck does not have the same density as a composite designed for a structural transom. Transoms will have much more pressure put on it from the through transom bolts that hold the motor / motors / bracket and the pressure put on it from running in seas and trailring it that what a 200 Pounder walking on the deck would.

FellowShip

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My motto: Just for the Grins :D

Re: Using Coosa
 

Thanks that was a dumb question. I looked after i asked. and found too much info for my little brain. Its gonna take a couple days for it to sink in.

I live in Jax fl getting ready to do transom and floor looking to get some coosa board for my sea craft 18. any connections to get in Jax fl?

saw a couple of you guys are from Jax fl. I'm looking to purchase some coosa for my 18sf transom and deck. anybody know were to buy locally?