Plywood In Attic Is Black

The new roof doesn t help much most of the moist air is likely coming up from below.

Plywood in attic is black.

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. Mold growing on the sheathing in your attic is a serious problem that shouldn t be ignored. The attic is one of the parts of the home that is not frequently visited especially if it is difficult to access. It is also a potential breeding ground for black mold because it is often hot and humid and there is a potential for water seepage.

Since the recent cold weather we have a unit owner that noticed frost black decking which they are concerned is mold. Today s bge energy audit 8 15 20 in randallstown md yielded some great information that i want to be sure to pass along to as many people as possible because this stuff really makes sense. 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.

The mold is likely coming from a condensation buildup along your soffet a good trick would be to get in there and attach cut foam blocks at the top of your wall cavity up to the roof deck to seal the soffet of from the attic space wherever cooler and warmer air mix there will be condensation. Saturday august 15 2020. Some woods are much more resistant to rot and fungal attacks. I live in a condo in nh and this roof was replaced in november 2008.

Black mold on attic side of roof plywood. 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. Attic moisture and poor ventilation are the causes. The following picture is of a long standing moisture condition in an attic where much of the roof sheathing has turned black.

Does mold on attic sheathing have to be removed. 07 10 2009 09 24 pm 7. Something else you can do to help is get underneath the insulation and use 3m flashing tape to tape. Attic mold cleaner attic mold removal how to clean attic mold how attic mold gets there in the first place and what to do to help prevent attic mold.

When moisture condenses on plywood roof sheathing repeatedly or continuously the wood will turn black. Black mold in attics. I spoke to the roofing company that did the installation and a second roofer that did other units for us and they re thoughts are that the attic does not have sufficient insulation.