Re: [bolger] boatbuilding shelter
Fritz
I have had simular experiances with Visqueen, the only way I know to stop it
is make the shelter a true double pane, ie double separated layers sealed
from each other with a dead air space and totally inclosed. If you keep the
temperature slightly higher inside it should keep the humidity (85% instead
of 100%) low enough to stop the condensation. I think that is your best shot,
though this winter we are having might defeat even that. I have one of those
20 ft shelters from Cosco out back for my wood stack, basically sitting in a
swamp the way this winter has been and it has remained dry inside, so it may
be a material problem.
HJ
I have had simular experiances with Visqueen, the only way I know to stop it
is make the shelter a true double pane, ie double separated layers sealed
from each other with a dead air space and totally inclosed. If you keep the
temperature slightly higher inside it should keep the humidity (85% instead
of 100%) low enough to stop the condensation. I think that is your best shot,
though this winter we are having might defeat even that. I have one of those
20 ft shelters from Cosco out back for my wood stack, basically sitting in a
swamp the way this winter has been and it has remained dry inside, so it may
be a material problem.
HJ
> I am building Bolger's Double Eagle catamaran. The boat is one unit
> now with comparatively little to do to complete the basic structure.
> That is the exterior is 80% done, no interior work yet.
>
> El Nino has been giving us a very mild but wet winter here in
> Southeast Alaska. Temperatures are in the 30's to low 40's with lots
> of rain. The problem is it's raining in my shelter. There are no
> leaks but condensation is rampant. I have wet plywood that I'll have
> to wait until the later part of the summer for it to dry so I can
> sheathe it. The shelter is 24' X 45', completely open at both ends.
> It is covered with reinforced plastic tarps. I added an additional
> layer of plastic on the underside of the rafters but it didn't help.
> I covered the ground with plastic, no help. I bought a large fan on
> e-bay and mounted it high in the middle of the shelter still no
> good. I have a heated shop next door so the project hasn't stopped
> but I can't do anything outside on the boat, even though I only need
> 35 degrees for the epoxy. Is the only solution to insulate and heat?
>
> Needless to say the situation is very frustrating.
>
Check out one of the on line greenhouse suppliers. There are plastics
available that force the condensate to sheet down the sides of the
house versus dripping. Drips from the greenhouse cover are a great
way to promote fungus etc. in young plants. Greenhouse grade plastics
are not cheap, but if they solve the problem... Daniel
available that force the condensate to sheet down the sides of the
house versus dripping. Drips from the greenhouse cover are a great
way to promote fungus etc. in young plants. Greenhouse grade plastics
are not cheap, but if they solve the problem... Daniel
> of rain. The problem is it's raining in my shelter. There are nohave
> leaks but condensation is rampant. I have wet plywood that I'll
Seal the ends and dehumidify?
----- Original Message -----
From: <gaffcat@...>
To: <bolger@yahoogroups.com>
Sent: Friday, January 31, 2003 2:32 PM
Subject: [bolger] boatbuilding shelter
> of rain. The problem is it's raining in my shelter. There are no
> leaks but condensation is rampant. I have wet plywood that I'll have
> to wait until the later part of the summer for it to dry so I can
> sheathe it. The shelter is 24' X 45', completely open at both ends.
> It is covered with reinforced plastic tarps. I added an additional
> layer of plastic on the underside of the rafters but it didn't help.
> I covered the ground with plastic, no help. I bought a large fan on
> e-bay and mounted it high in the middle of the shelter still no
> good. I have a heated shop next door so the project hasn't stopped
> but I can't do anything outside on the boat, even though I only need
> 35 degrees for the epoxy. Is the only solution to insulate and heat?
>
> Needless to say the situation is very frustrating.
I am building Bolger's Double Eagle catamaran. The boat is one unit
now with comparatively little to do to complete the basic structure.
That is the exterior is 80% done, no interior work yet.
El Nino has been giving us a very mild but wet winter here in
Southeast Alaska. Temperatures are in the 30's to low 40's with lots
of rain. The problem is it's raining in my shelter. There are no
leaks but condensation is rampant. I have wet plywood that I'll have
to wait until the later part of the summer for it to dry so I can
sheathe it. The shelter is 24' X 45', completely open at both ends.
It is covered with reinforced plastic tarps. I added an additional
layer of plastic on the underside of the rafters but it didn't help.
I covered the ground with plastic, no help. I bought a large fan on
e-bay and mounted it high in the middle of the shelter still no
good. I have a heated shop next door so the project hasn't stopped
but I can't do anything outside on the boat, even though I only need
35 degrees for the epoxy. Is the only solution to insulate and heat?
Needless to say the situation is very frustrating.
now with comparatively little to do to complete the basic structure.
That is the exterior is 80% done, no interior work yet.
El Nino has been giving us a very mild but wet winter here in
Southeast Alaska. Temperatures are in the 30's to low 40's with lots
of rain. The problem is it's raining in my shelter. There are no
leaks but condensation is rampant. I have wet plywood that I'll have
to wait until the later part of the summer for it to dry so I can
sheathe it. The shelter is 24' X 45', completely open at both ends.
It is covered with reinforced plastic tarps. I added an additional
layer of plastic on the underside of the rafters but it didn't help.
I covered the ground with plastic, no help. I bought a large fan on
e-bay and mounted it high in the middle of the shelter still no
good. I have a heated shop next door so the project hasn't stopped
but I can't do anything outside on the boat, even though I only need
35 degrees for the epoxy. Is the only solution to insulate and heat?
Needless to say the situation is very frustrating.