Black Plywood In Attic

When moisture condenses on plywood roof sheathing repeatedly or continuously the wood will turn black.

Black plywood in attic.

Attic moisture and poor ventilation are the causes. Black mold in attic can cause many problems both in health and property. After a long winded background my question is. The plywood and the insulation felt dry but there were definitely a few sporatic black spots of mold.

This latter phenomenon occurs when the house is too humid and the warm moist air seeps into the attic where it condenses and freezes on cold attic areas. Do i need to rip the siding and sheathing off and put a rain screen on. Does mold on attic sheathing have to be removed. The new roof doesn t help much most of the moist air is likely coming up from below.

Attic feels excessively hot or stuffy attics should feel breezy if they are properly ventilated. Do i have a minor or major problem here. The black attic mold shown here confirms that this attic had a serious venting and moisture problem including moisture from sources lower in the building. This can be caused by the action of fungal growth and molds and the affect they have on the tannins in the wood.

When an attic is stuffy that indicates you have a ventilation problem which often results in mold problems. If these isolated spots are seen away from these roof penetrations then the roof may be damaged and. Black mold in attics. The variety i see most often is fuzzy green when active and goes black like that when dormant or dead.

Attic should be free from excessive heat and moisture so black mold will not grow. The following picture is of a long standing moisture condition in an attic where much of the roof sheathing has turned black. In this photo of very dark mold in an attic in a wet attic mold which we found to be brown in the microscope looked black on the plywood. What are the tell tale signs of an attic mold problem.

Dark black staining on wood surfaces if the wood in your attic shows any black discoloration the problem has moved beyond moisture. Without proper ventilation in the attic high heat and humidity can build up which leads to moisture from a different source. That is a stain caused by mold mould. After several years of this there may be.

You have mold that should be removed. Mold growing on the sheathing in your attic is a serious problem that shouldn t be ignored. These are commonly seen underneath roof vents plumbing stacks vent hoods and around chimneys. Walls that are improperly insulated may develop mold because they will absorb moisture from outside.

Or is a little bit of mold okay if the sheathing is drying out each summer and it.