Discolored Plywood In Attic

I thought this was a ventilation problem someone came to look at the wood and said it was fine.

Discolored plywood 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. Does mold on attic sheathing have to be removed. I attached three pictures. Some woods are much more resistant to rot and fungal attacks.

Mold growing on the sheathing in your attic is a serious problem that shouldn t be ignored. Is that rotted wood. I m aware of the cause poorly vented bathroom fans and not well sealed fan fixtures lights wires etc. Hello i am close to buying a house but my inspector looked into the attic and says that there is lots of mold up there.

There are a couple of boards in the pictures that i circled that are a grayish color. The decision regarding the thickness of plywood to use for the subfloor in the attic has a lot to do with how you intend to use the attic and it also depends on the spacing of the ceiling joists. When moisture droplets collect on wood surfaces in an attic a discoloration often occurs. 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.

Almost all attics in homes more than 25 years old will have some moisture stains on either the sheathing or the framing. So i m confused the wood in the attic has black streaks discolorations. 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. Attic stains may fall into this category depending on the severity.

Black mold in attics. But then i read that this could be mold. If your attic joists won t bear the weight necessary to finish out a living space but the engineer cleared them to support floor decking for light storage you can install inch plywood or. However if the ducting above isn t installed properly or broken the moisture just ends up as water vapor in your attic.

The second variable is the species of wood used in the plywood. The moisture from a steamy shower is routed through the fan then the attic and finally outside the house. The roof on the house is new but the sheathing was not replaced. In a reasonably well insulated and vented attic stains may appear due to condensation.

The presence of mold inside your home even if it.