I live in Indiana and had additional insulation installed in Dec 2014 and a new roof with architectural shingles installed in Aug 2015. At the time of the roof install we changed to a ridge vent. Approximately a month after we spotted mold on an INTERIOR ceiling over a valued ceiling. There is also rust on the ceiling fan down rod and condensation out of the return air duct. At the corner of the ceiling beam I can see spray foam so there was obviously an opening of some kind there previously whether it was a good or bad thing.
I really thought the room mold was caused by blocking some sort of airflow in the room however have recently discovered that there is exposed nail strips where the roofer didn’t put enough rows up to the ridge vent. And they are not covered with silicone or any other sealant. The mold is on one side of the vaulted ceiling where the exposed nails are located and is not accessible.
Compounding the situation the roofer only cut one side of the ridge vent stating that it doesn’t matter if you cut one side double the width or split 50/50. From watching GAF videos and researching I have never heard anyone say to just cut one side. My guess is that if only cut on one side it will not properly draw the air from the soffit vents on the uncut side.
We have also been having issues with mysterious ceiling stains on the vaulted ceilings prior the new roof and was told it was from the roof leaking. A new roof due to hail damage SHOULD fix if that was the case but it hasn’t stopped… From what I have researched I believe this is due to improper ventilation/insulation in these areas. Our home was built in 1992 and we have already replaced all soffit vents with plans to add more. There is also a gable vent on one end…not sure if this is necessary. One person suggested to fix vaulted airflow by installing solar fans over vaulted areas.
So my question here is if exposed nails on a nail strip is the cause of the interior mold or is it improper air flow? Or both? The roofing job was sub contracted by the insulation company.
I have had three different roofers and it seems I can’t find anyone who can nail down the exact cause or that knows enough about ventilation AND roofing!
The Insulation company wants to rip off the roof peak to add spray insulation in the space to the tune of $2700!! My take is that the mold is a result of either the foam insulation or roofer improper install and that we should not be paying for any of it. And that the first step should be removing ceiling drywall (which is in my daughter’s bedroom) as moldy drywall needs to go. From there they can then see how much damage is has been done. And if they refuse to do for comp then what is my recourse? I know the insulation company is bonded-do we pay and go after their insurance?
Sorry for the long winded post-just trying to get all the facts out there so proper advice can be given. I have pictures if I can figure out how to post them.
Thanks in advance.