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Message
Moisture Barrier Question
Posted on 1/14/24 at 8:39 am
Posted on 1/14/24 at 8:39 am
I have a metal building that has a limestone floor. In the mornings you can see the limestone is damp. I assume it’s moisture from the ground making it damp. Could I put visqueen down on top of the existing limestone and put more limestone on top of the visqueen to prevent the dampness?
Would the visqueen need to be one solid sheet or could I do it in sections?
Would the visqueen need to be one solid sheet or could I do it in sections?
4
Posted on 1/14/24 at 9:10 am to Old Man and a Porch
What part of the state are you located? So this is a detached barn structure?
Posted on 1/14/24 at 9:14 am to Old Man and a Porch
If the building on flat ground? Does the land have standing water after a rain? Does the building have gutters or any type of drainage? Is the moisture more on the perimeter of the building, the center of the building or uniform throughout?
Posted on 1/14/24 at 10:50 am to PaBon
Livingston Parish
Free standing metal building with out any gutters.
The ground is as level as we could make it. Some of the ground around it does stay damp after a rain. If we open the doors for the day you can see where the limestone dries.
Free standing metal building with out any gutters.
The ground is as level as we could make it. Some of the ground around it does stay damp after a rain. If we open the doors for the day you can see where the limestone dries.
Posted on 1/14/24 at 11:48 am to Old Man and a Porch
Is this building conditioned - meaning, insulated, and heated and cooled?
If not, it could simple condensation. If the temperature of the surface limestone is colder, being winter, than the dew point temperature of the surrounding air inside the building, then moisture from the air is going condensate on the limestone making it damp. Like when you take a can of beer or soda out of the refrigerator and the can begins to sweat on the countertop.
Not saying that’s your problem, but something to consider if the building is not conditioned.
If not, it could simple condensation. If the temperature of the surface limestone is colder, being winter, than the dew point temperature of the surrounding air inside the building, then moisture from the air is going condensate on the limestone making it damp. Like when you take a can of beer or soda out of the refrigerator and the can begins to sweat on the countertop.
Not saying that’s your problem, but something to consider if the building is not conditioned.
Posted on 1/14/24 at 12:17 pm to CrawDude
The building is not conditioned.
This has been a year around problem.
This has been a year around problem.
Posted on 1/14/24 at 12:55 pm to Old Man and a Porch
(no message)
Posted on 1/14/24 at 1:07 pm to Old Man and a Porch
quote:
The building is not conditioned. This has been a year around problem.
Well if it is occurring on days in year in which relative humidity is low, say less 50% RH, it could be ground moisture issue. Certainly visqueen is used widely as a moisture barrier under raised houses, and under poured slabs, to mitigate moisture migration from the soil into houses/buildings. I’m not knowledgeable enough on the subject to suggest that laying visqueen on top of existing limestone, followed by another layer of limestone, will fix the problem, but it very may - seems logical to me, but I’m sure other posters will have more knowledge/experience with this issue.
Posted on 1/15/24 at 4:58 am to Old Man and a Porch
it seems like the visqueen would tear/fail pretty easily between layers of limestone. I imagine the driving anything on top of the limestone a few times would be enough to perforate it in a thousand places
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