Attic Plywood Wet
Wet sheathing was found in attic area due to lack of venting.
Attic plywood wet. Shingle roofs are installed every day over wood decking that has been wet by rain. Top causes of attic moisture. The mold itself may have a cottony texture but can also be velvety leathery or. Mold and mildew thrive in damp conditions so you must act quickly to prevent expensive damage.
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. Generally plywood roof decking that has gotten wet and had the shingles applied over it if allowed to dry. Most attics are dry plywood is a smart vapor retarder with variable permeance. Air conditioner condensate pan not draining.
In most cases testing for attic mold is unnecessary. As i m sure you know building codes require this type of attic to be vented. If you can ensure good air sealing and insulation the attic will remain cool and dry as if it were outside. Prolonged wetness will rot out the roof sheathing.
There are many signs that an attic is wet. The attic vents provide a secondary method to help everything stay dry. Clothes dryers venting air to the attic rather than outside. For example it is rare to see moisture problems or ice damming on the roof of a detached garage or unheated barn.
Often in attics we also find cladosporium sphaerospermum or aureobasidium pullulans which looks about the same or a little darker on plywood or framing when the attic has been damp or wet there might be a more serious problem with aspergillus sp. Inadequate ventilation attics must be vented to allow moist warm air to escape. Water in your attic can damage wood beams insulation and even your ceiling. Mold usually causes a musty odor and may cause staining that may be black brown gray white yellow or green.
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. What to do about a wet attic.