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Fiberglass question

L
Laura
Sun, Feb 18, 2007 10:29 PM

We are completing the build out of the lower cabin on our lobster boat
conversion. We have framed it out and built out the walls and cabin top in
plywood. The top of the cabin will have a removable fly bridge and will be
used regularly.  Need suggestions on whether to use polyester or epoxy
resin, and suggestions on fiberglass reinforcement to cover the cabin top
and the side walls. We have used both epoxy and polyester in the past and
are familiar with how they work, we just haven't used them on this large a
span / scale.  We were thinking of bi-weave on the top and heavy weight
cloth on the sides.  Biggest concern is what will adhere best to the
plywood, poly or epoxy.  Intent is to put down a thinned layer of resin with
acetone to get better penetration into the plywood, and then while still
tacky, put the next layers of cloth and resin over.

Next concern is that we have a short window of opportunity to accomplish
this. It has been COLD up here lately, and due to circumstances beyond our
control, we may have to start the above work while it is still on the cooler
side in the next month or two.  We are aware of the possibility of the amine
blush if the temp is not optimal - any suggestions on how to avoid that
issue or how to address it after it starts?

Thanks as always for the advice.

Laura & Artie Ortmann

NARCOSIS Downeaster

Currently on the hard, Long Island, NY

We are completing the build out of the lower cabin on our lobster boat conversion. We have framed it out and built out the walls and cabin top in plywood. The top of the cabin will have a removable fly bridge and will be used regularly. Need suggestions on whether to use polyester or epoxy resin, and suggestions on fiberglass reinforcement to cover the cabin top and the side walls. We have used both epoxy and polyester in the past and are familiar with how they work, we just haven't used them on this large a span / scale. We were thinking of bi-weave on the top and heavy weight cloth on the sides. Biggest concern is what will adhere best to the plywood, poly or epoxy. Intent is to put down a thinned layer of resin with acetone to get better penetration into the plywood, and then while still tacky, put the next layers of cloth and resin over. Next concern is that we have a short window of opportunity to accomplish this. It has been COLD up here lately, and due to circumstances beyond our control, we may have to start the above work while it is still on the cooler side in the next month or two. We are aware of the possibility of the amine blush if the temp is not optimal - any suggestions on how to avoid that issue or how to address it after it starts? Thanks as always for the advice. Laura & Artie Ortmann NARCOSIS Downeaster Currently on the hard, Long Island, NY
ST
Scott Templeton
Sun, Feb 18, 2007 10:57 PM

I pealed polyester glass off in sheets on my boat (original construction)
When I ran into repairs that had been made with epoxy I had to break out the
big sander and or heat gun to remove it.I went with epoxy.
I believe MAS epoxy is blush free and you can get hardener for cold weather
but it has it's limits.

Scott

On 2/18/07, Laura lortmann@optonline.net wrote:

We are completing the build out of the lower cabin on our lobster boat
conversion. We have framed it out and built out the walls and cabin top in
plywood. The top of the cabin will have a removable fly bridge and will be
used regularly.  Need suggestions on whether to use polyester or epoxy
resin, and suggestions on fiberglass reinforcement to cover the cabin top
and the side walls. We have used both epoxy and polyester in the past and
are familiar with how they work, we just haven't used them on this large a
span / scale.  We were thinking of bi-weave on the top and heavy weight
cloth on the sides.  Biggest concern is what will adhere best to the
plywood, poly or epoxy.  Intent is to put down a thinned layer of resin
with
acetone to get better penetration into the plywood, and then while still
tacky, put the next layers of cloth and resin over.

Next concern is that we have a short window of opportunity to accomplish
this. It has been COLD up here lately, and due to circumstances beyond our
control, we may have to start the above work while it is still on the
cooler
side in the next month or two.  We are aware of the possibility of the
amine
blush if the temp is not optimal - any suggestions on how to avoid that
issue or how to address it after it starts?

Thanks as always for the advice.

Laura & Artie Ortmann

NARCOSIS Downeaster

Currently on the hard, Long Island, NY


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I pealed polyester glass off in sheets on my boat (original construction) When I ran into repairs that had been made with epoxy I had to break out the big sander and or heat gun to remove it.I went with epoxy. I believe MAS epoxy is blush free and you can get hardener for cold weather but it has it's limits. Scott On 2/18/07, Laura <lortmann@optonline.net> wrote: > > We are completing the build out of the lower cabin on our lobster boat > conversion. We have framed it out and built out the walls and cabin top in > plywood. The top of the cabin will have a removable fly bridge and will be > used regularly. Need suggestions on whether to use polyester or epoxy > resin, and suggestions on fiberglass reinforcement to cover the cabin top > and the side walls. We have used both epoxy and polyester in the past and > are familiar with how they work, we just haven't used them on this large a > span / scale. We were thinking of bi-weave on the top and heavy weight > cloth on the sides. Biggest concern is what will adhere best to the > plywood, poly or epoxy. Intent is to put down a thinned layer of resin > with > acetone to get better penetration into the plywood, and then while still > tacky, put the next layers of cloth and resin over. > > > > Next concern is that we have a short window of opportunity to accomplish > this. It has been COLD up here lately, and due to circumstances beyond our > control, we may have to start the above work while it is still on the > cooler > side in the next month or two. We are aware of the possibility of the > amine > blush if the temp is not optimal - any suggestions on how to avoid that > issue or how to address it after it starts? > > > > Thanks as always for the advice. > > > > Laura & Artie Ortmann > > NARCOSIS Downeaster > > Currently on the hard, Long Island, NY > _______________________________________________ > http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering > > To unsubscribe send email to > trawlers-and-trawlering-request@lists.samurai.com with the word > UNSUBSCRIBE and nothing else in the subject or body of the message. > > Trawlers & Trawlering and T&T are trademarks of Water World > Productions. Unauthorized use is prohibited.