Attic Plywood Black

In old houses you ll usually see some spots that are stained dark or black where there was a roof leak at some point in time which was repaired but the stain remains.

Attic plywood black. Does mold on attic sheathing have to be removed. Black mold in the attic. You have mold that should be removed. Some woods are much more resistant to rot and fungal attacks.

When an attic is stuffy that indicates you have a ventilation problem which often results in mold problems. Black mold in attics. When moisture condenses on plywood roof sheathing repeatedly or continuously the wood will turn black. Black or white staining in attic.

Even if conditions are conducive to mold growth elevated moisture plywood made from a fungal resistant wood will resist mold growth for quite a while. The following picture is of a long standing moisture condition in an attic where much of the roof sheathing has turned black. Attic moisture and poor ventilation are the causes. That is a stain caused by mold mould.

When this seepage occurs it can often go unnoticed until a major problem makes it known. 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. If the dark surface of the wood smudges it could be mold. 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. 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. Get rid of black mold. Why does attic mold rarely if ever affect indoor air quality in homes.

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. If your attic sheathing doesn t look like new construction and is visibly black or white stained like this picture you likely have a ventilation issue that needs to be addressed and mold remediated. Mold growing on the sheathing in your attic is a serious problem that shouldn t be ignored. The presence of mold inside your home even if it.

Attic feels excessively hot or stuffy attics should feel breezy if they are properly ventilated. The second variable is the species of wood used in the plywood. The variety i see most often is fuzzy green when active and goes black like that when dormant or dead. This can be caused by the action of fungal growth and molds and the affect they have on the tannins in the wood.

If the wood is soft if it s easily imprinted when you push on it it s probably rotten. The attic is one of the parts of the home that is not frequently visited especially if it is difficult to access.