Hi, I went up to our attic to store some items the other day and was overtaken by the smell of mold/mildew. I looked around on the trusses and roof planks and they are relatively covered in white/black mold. Our house was built in 1930. We bought the home 6 mos ago and the previous owner said he put on a new roof less than a year ago.
He installed some low cost ridge ventilation (the stuff looks like corrugated cardboard) from Owens Corning (I think). Although, because of the way our home was built originally, there were no soffits that are accessible from the attic. The roof line connects to the outer wall where it meets the floor. The roof then continues past the floor on the outside of the house and the soffit is below the attic floor.
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I think you get the point. So, it's not possible to have soffit vents. (at least I don't think). There is, however, one window at the end of the house (typical rectangular colonial approx 25 x 40). I pulled out the window and installed some plywood and cut out an opening for a gable vent and a ventilation hole for the bathroom ventilation fan; which, was originally not piped to the outside and has now been blowing humid air into our unventilated attic. Now were having fun.
So, my question is, I have installed one gable vent, the house has a cheap ridge vent system, I have corrected the ventilation from the bathroom fan to exhaust out of the house, so, should I install another gable vent on the other side of the building to allow for crossflow or is this not going to work with the ridge vents?
Also, any mold remediation recommendations will be greatly appreciated.