Hello everyone,
my single-family house is currently in the drying phase.
In our living area, we have an open interior pitched roof.
At the moment, our construction drying is being done with several construction dehumidifiers, but the relative humidity is still quite high, sometimes 76%.
Now, moisture has appeared in some areas between the vapor retarder and the insulation.
Apparently, the vapor retarder is not 100% airtight. The insulation seems damp in some spots.
I spoke with our architect, who said that under the current weather conditions this is normal, vapor retarders can never be completely airtight, but this is not a serious issue.
The moisture can dry out again through the vapor-permeable upper membrane toward the roof tiles.
I am currently very uncertain whether this can really be considered normal and have concerns about mold and wood damage.
What are your experiences? Is action required here or is this really a usual process?
Looking forward to your answers.
my single-family house is currently in the drying phase.
In our living area, we have an open interior pitched roof.
At the moment, our construction drying is being done with several construction dehumidifiers, but the relative humidity is still quite high, sometimes 76%.
Now, moisture has appeared in some areas between the vapor retarder and the insulation.
Apparently, the vapor retarder is not 100% airtight. The insulation seems damp in some spots.
I spoke with our architect, who said that under the current weather conditions this is normal, vapor retarders can never be completely airtight, but this is not a serious issue.
The moisture can dry out again through the vapor-permeable upper membrane toward the roof tiles.
I am currently very uncertain whether this can really be considered normal and have concerns about mold and wood damage.
What are your experiences? Is action required here or is this really a usual process?
Looking forward to your answers.
D
Dennis67426 Jan 2017 22:02Hello,
sorry for the late reply, I have quite a bit going on right now.
There are several causes.
Firstly, I found multiple leaks in the vapor barrier. Another main cause was an opening on the ground floor where the wastewater vent pipe was installed. This opening was not sealed, allowing water vapor to enter the roof and moisture to spread in the insulation.
Current status:
My general contractor had the insulation replaced and the vapor barrier as well as the leaks taped up.
Unfortunately, it was not documented which parts were replaced. Moisture is no longer visible.
Following my defect notice under the construction contract regulations with a deadline of January 31, 2017, I was informed that they were legally reviewing whether the contract could be terminated (this was shortly before Christmas), as I had allegedly permanently destroyed their trust through my behavior.
By now, I can even laugh about that.
Well, the construction work continued and is now nearing completion.
In my defect notice, I requested that if the general contractor does not follow the expert report’s recommended actions, a microbiological assessment should be carried out where I can specify the sampling locations.
I am very curious about next week’s deadline for the defect notice.
The final invoice will probably be due at the beginning of February.
There will certainly be some further discussions.
Best regards,
Dennis674
sorry for the late reply, I have quite a bit going on right now.
There are several causes.
Firstly, I found multiple leaks in the vapor barrier. Another main cause was an opening on the ground floor where the wastewater vent pipe was installed. This opening was not sealed, allowing water vapor to enter the roof and moisture to spread in the insulation.
Current status:
My general contractor had the insulation replaced and the vapor barrier as well as the leaks taped up.
Unfortunately, it was not documented which parts were replaced. Moisture is no longer visible.
Following my defect notice under the construction contract regulations with a deadline of January 31, 2017, I was informed that they were legally reviewing whether the contract could be terminated (this was shortly before Christmas), as I had allegedly permanently destroyed their trust through my behavior.
By now, I can even laugh about that.
Well, the construction work continued and is now nearing completion.
In my defect notice, I requested that if the general contractor does not follow the expert report’s recommended actions, a microbiological assessment should be carried out where I can specify the sampling locations.
I am very curious about next week’s deadline for the defect notice.
The final invoice will probably be due at the beginning of February.
There will certainly be some further discussions.
Best regards,
Dennis674
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