Hey guys, Ive got a I-beam/brick shed with a steel roof and Ive noticed on these colds nights when I go out in the morning the underside of the roof is covered in water condensation... and some of it is dripping down onto the cars and their covers.
Condensation is from a temperature differential right? My shed is fairly sealed... would fitting some whirly birds on the roof or opening the window etc help to reduce/eliminate condensation?
Condensation in shed
Started by
_Viper_
, Jul 16 2011 03:26 PM
13 replies to this topic
#2
_Ozzie Picker_
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Posted 16 July 2011 - 03:32 PM
got the same problem after a big frost,
been thinking of putting plastic over the car covers during winter,to stop the water soaking through.
i don,t think whirley birds are moving much in the frost,but i could be wrong(:-)
been thinking of putting plastic over the car covers during winter,to stop the water soaking through.
i don,t think whirley birds are moving much in the frost,but i could be wrong(:-)
#3
wot179
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Posted 16 July 2011 - 03:42 PM
Ive seen canvas sheets nailed to the rafters,they seem to absorb the water and dry out slowly instead of just dripping.
But they collect heaps of dust and dead bugs on top.
But they collect heaps of dust and dead bugs on top.
#4
S pack
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Posted 16 July 2011 - 04:00 PM
Hey guys, Ive got a I-beam/brick shed with a steel roof and Ive noticed on these colds nights when I go out in the morning the underside of the roof is covered in water condensation... and some of it is dripping down onto the cars and their covers.
Condensation is from a temperature differential right? My shed is fairly sealed... would fitting some whirly birds on the roof or opening the window etc help to reduce/eliminate condensation?
Yep, warm moist air inside shed hits cold iron roof and condensation forms on underside of roof.
Ventilation will help. Better still, pull the roof off, lay down R2.5 fibreglass building blanket (insulation) over the purlins and refit the roof.
Foil side faces down and roof sits on the fibreglass blanket.
#5
_sunburst73-xu1_
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Posted 16 July 2011 - 04:10 PM
Just buy a water proof car cover.
#6
_nial8r_
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Posted 16 July 2011 - 04:49 PM
i have the same problem also but not only in the shed but under the entertaining area as well, it has bull nose sheets on it. its worse in the shed when we have been out and put the car back in the shed, close the door down and in the morning there is twice as much on the underside on the roof. i have been thinking about pull the sheets of and laying some sarking down same as S pack dave said that way any water that drops down will run in to the gutter. its the only way around the problem
#7
dattoman
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Posted 16 July 2011 - 04:52 PM
Mine just leaks right thru
Forget condensation it damn near rains in there
And since the floor is carpetted it just takes one leak and the whole floor gets soaked
When I'm able to move some cars around and the weathers better I will remove the carpet and patch the roof
However... I don't get the condensation issue your talking about
Forget condensation it damn near rains in there
And since the floor is carpetted it just takes one leak and the whole floor gets soaked
When I'm able to move some cars around and the weathers better I will remove the carpet and patch the roof
However... I don't get the condensation issue your talking about
#8
TerrA LX
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Posted 16 July 2011 - 05:07 PM
We are south western sydney ans we get condensation under the car port so I don't see how ventalation will help.
#9
S pack
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Posted 16 July 2011 - 05:23 PM
We are south western sydney ans we get condensation under the car port so I don't see how ventalation will help.
It will help when you've got an enclosed space underneath the roof.
The insulation blanket works best though.
I have a partly enclosed carport with the insulation blanket under the roof and no condensation problems at all.
#10
_Liam_
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Posted 16 July 2011 - 06:04 PM
I think you will get away with condensation if you get some Bubble insulation (Air cell) and just fix it to the under side of your rafters. It will create a air gap between roof and shed area and it will never be an issue again.
#11
MRLXSS
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Posted 16 July 2011 - 07:40 PM
I have Sisalation in my shed and does leak at all... The carport and stuff does, but the shed stays dry....
On some (Cold, humid) mornings though, the painted floor has some condesation on it.
On some (Cold, humid) mornings though, the painted floor has some condesation on it.
#12
_nial8r_
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Posted 16 July 2011 - 08:00 PM
it does only happen it winter when we get a nice warmish day then when the temp drops drops over night thats what causes it. total pain in the arse. i alway worry about drops of water dropping in to the top side of the light fittings 
#13
_Yella SLuR_
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Posted 16 July 2011 - 11:29 PM
Pull up the roof and put a layer of sisalation. As the spaces are not heated (I presume) the insulation will be of little benefit. I need to do the same to my carport one of these days, same problem.
#14
frash da bucket
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Posted 17 July 2011 - 12:33 AM
Hi Dane,
I have the same problem too,i just got a water proof car cover,and when its removed a dry car and dust free.
Cheers John.
I have the same problem too,i just got a water proof car cover,and when its removed a dry car and dust free.
Cheers John.
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