OSB sheathing and plywood roof deck develop two distinct mold presentations: superficial surface colonization on structurally sound material (treatable in place), and through-penetration with structural delamination (requiring sheathing replacement). We assess each section individually and recommend replacement only where structural integrity is actually compromised.

Every attic is different; every scope is written after we've assessed yours specifically.


Our Seattle, WA attic mold team covers Seattle and surrounding communities. Same-day or next-day scheduling in most areas.
Zip codes served: 98109 98108 98104 98107 98106 98101 98103 98102 98105 98154 98122 98121 98126 98125 98178 98174 98177 98144 98146 98195 98199 98118 98119 98116 98117 98115 98112 98164 98134 98136 98133 98111 98113 98114 98124 98127 98129 98139 98141 98145 98161 98165 98170 98175 98181 98185 98191 98194 98148 98155 98158 98166 98168 98188 98198
Call +1-844-578-1604 — Free EstimateSheathing assessment, borate treatment, fan rerouting, ventilation correction — full scope attic mold remediation in Seattle, WA.
📞 Call +1-844-578-1604