The client called on Apex when he discovered substantial mold growing in his attic. After inspecting his roof and attic, we found that there was no ventilation at all. Apex coordinated with a local mold remediation company to handle the mold during installation, as well as installed proper intake and exhaust ventilation for his particular style of home. The new GAF Timberline HDZ shingle in Williamsburg Slate looks great on the home.