Attic stains may fall into this category depending on the severity.
Discolored plywood in attic.
I m aware of the cause poorly vented bathroom fans and not well sealed fan fixtures lights wires etc.
I attached three pictures.
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.
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.
The presence of mold inside your home even if it.
I have surface mold on the sheathing in my 1982 vintage 12 6 pitched attic.
So i m confused the wood in the attic has black streaks discolorations.
The moisture from a steamy shower is routed through the fan then the attic and finally outside the house.
The wood has dark stains around where the old bathroom vent was pointing to in the attic the ventilation had been fixed to point outside at the time of changing the roof.
In a reasonably well insulated and vented attic stains may appear due to condensation.
905 290 9101 british columbia lab.
However if the ducting above isn t installed properly or broken the moisture just ends up as water vapor in your attic.
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.
But then i read that this could be mold.
Mold growing on the sheathing in your attic is a serious problem that shouldn t be ignored.
Does mold on attic sheathing have to be removed.
There are a couple of boards in the pictures that i circled that are a grayish color.
I thought this was a ventilation problem someone came to look at the wood and said it was fine.
When moisture droplets collect on wood surfaces in an attic a discoloration often occurs.
This happens due to trapped damp air often in the late fall or.
The roof on the house is new but the sheathing was not replaced.
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.
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.
