Customer had concerns of wet drywall on a newer roof with proper installation of flashings and ice and water shield. When we arrived the interior ceilings had a small amount of mold forming where the ceilings met up with the walls. The interior areas were wet and the drywall was soft. The customers were wondering where the moisture was coming from on a 10-degree day with no snow present on the roof and it had not rained in over a month.
Knowing that there was no rain or snow in the town for over a month, the weather was not a factor in the presence of the moisture and mold. The roofing installation was not a factor, it was installed properly. The next steps where to review the roof ventilation, intake and also exhaust.
We assess this by using the International Building Code with the net free area calculations. The roof exhaust was sufficient but the intake was not.
Exterior: We removed the aluminum soffit panels and cut into the existing wood soffit opening up a holes 10” x 14” in a pattern of every other 12 feet along the eve ends of the soffits. We then installed vented panels over the wood holes we cut in on the length of the soffits.
Interior: We checked to see that the insulation was not blocking the interior eves of the attic. We then installed attic baffles in all rafter bays where the holes where cut in. Interior drywall was then removed in damaged areas and treated with BioShield 150 antimicrobial for the treatment of any mold, fungi and bacteria. We then installed drywall, taping and painting.
This customer did not have proper intake ventilation intake.
The improper ventilation caused moisture and mold to form even in below freezing weather conditions. Which shows without the proper ventilation in your home, exhaust ventilation (air going out of your home) and intake ventilation (air going in your home, condensation and mold can form. For this customer we took imperative and necessary steps to fix the mechanical problem, the vents, and in addition, removed health and mold threats.