Mold on the north side of the sheating in my attic
First let me apologize for the longwinded question. I purchased a house a while back it was an as-is purchase. We knew a fire had occurred several years back and seen what was presumed to be smoke damage in the attic.
The house had been re-wired, new sheetrock throughout kitchen etc. When we purchased the house the return air (duct work in crawl space) was not hooked up and this was one of the first things corrected.
Moving forward we installed new siding, did finish work inside, etc. My brother was installing the siding and said “you have mold.” I thought he was mistaken but it turns out he was right.
In a panic I called a mold testing company. They came out and got me even more freaked out, he went in to the attic and I asked if it was bad. He said it was severe and he would recommend removing and replacing the entire north side. He then said let’s go downstairs and talk, he started telling me about mold and ventilation, when we got to the moisture part of mold I pulled out my moisture decector and told him I went through the whole house and checked everything. He said he would re-check.
Their highest reading was 9% on the bathroom door casing, everywhere in the attic was 5.9 max. Humidity was 45% in the house and that testing right after we shut the door leading to the outside.
He performed an air quality test, then he performed one outside as a control, I asked him if he should of performed the control test on the north side of the house instead of the south side, he said it didn’t matter.
Another thing I thought was strange is he performed the indoor one in the front room under a running ceiling fan. Maybe I am being over analytical at this point, but as we continued to talk he discovered there is no wet wet wood in the attic or house and that the roof was two years old years old and if I have to replace it my brother is a 28 year roofer.
The tone of the conversation seemed to cage some. He then said I don’t have enough insulation in my attic it’s only abut and R19 and I need 12 more inches of white blown insulation and my soffit vents are blocked and it may be because of the return air plus the garage has a gable vent.
Here’s the question — lol — I have approximately 1,250 s.f. of attic floor space the ridge pole is approximately 6 foot high, there is mushroom vents (6) on the south side of the roof four soffit vents on the north side (because of garage and cover over porch) and about 6 soffit vents on the Southside soffit along with one gable vent on the the north face of the garage dormer. Should the gable vent be closed off?
Any other suggestions would be appreciated as I do know what to do. Thanks
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