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Moisture between vapor barrier and insulation in shed

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Moisture between vapor barrier and insulation in shed Victag 02-10-2007
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Posted by Victag on February 10, 2007, 7:05 pm
We have just insulated our shed and put vapor barrier inside the
insulation, with a layer of tar paper between the insulation and the
siding. We are noticing that one wall is sweating and moisture is
collecting between the insulation and vapor barrier. Berfore we
drywall, we want to eliminate the moisture. The attic of the shed is
vented, so I can not understand why we are seeing this moisture
still? Does anyone have any advice as to how to fix this and why we
would still be getting moisture? We would like to use the shed as an
office and have also installed heating. Are we still lacking proper
venting or is this likely because we have not properly sealed the
vapor barrier? Thanks in advance for any help.


Posted by Victag on February 10, 2007, 7:19 pm
If it makes a difference, we are in BC Canada, moist climate with a
mix of cold and warm.


Posted by Michael Bulatovich on February 10, 2007, 8:35 pm

> If it makes a difference, we are in BC Canada, moist climate with a
> mix of cold and warm.

If for some reason the air outside is warmer/wetter than it is inside, you
could get condensation on the 'outside' of the VB. Another possibility is a
water leak into the wall, from above, or from wind driven moisture through
joints.
--


MichaelB
www.michaelbulatovich.ca



Posted by Victag on February 10, 2007, 9:08 pm
>
>
> > If it makes a difference, we are in BC Canada, moist climate with a
> > mix of cold and warm.
>
> If for some reason the air outside is warmer/wetter than it is inside, you
> could get condensation on the 'outside' of the VB. Another possibility is a
> water leak into the wall, from above, or from wind driven moisture through
> joints.
> --
>
> MichaelBwww.michaelbulatovich.ca

Thanks for the reply Michael,
We have had the heat on high so it is definitely warmer inside and the
moisture is a sweat on the whole wall, so we have ruled out any
leaks. We have just replaced all VB and insulation trying to solve
this problem and it is back again. Thank god we did not put up the
drywall yet!


Posted by Michael Bulatovich on February 11, 2007, 9:20 am

>>
>>
>> > If it makes a difference, we are in BC Canada, moist climate with a
>> > mix of cold and warm.
>>
>> If for some reason the air outside is warmer/wetter than it is inside,
>> you
>> could get condensation on the 'outside' of the VB. Another possibility
>> is a
>> water leak into the wall, from above, or from wind driven moisture
>> through
>> joints.
>> --
>>
>> MichaelBwww.michaelbulatovich.ca
>
> Thanks for the reply Michael,
> We have had the heat on high so it is definitely warmer inside and the
> moisture is a sweat on the whole wall, so we have ruled out any
> leaks. We have just replaced all VB and insulation trying to solve
> this problem and it is back again. Thank god we did not put up the
> drywall yet!

<stupid question coming>

How's the weather been lately? Raining? Any wind-driven rains? What about
surface drainage? Is it sloped away? Something is putting water in your
wall.
--


MichaelB
www.michaelbulatovich.ca



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