Blackened Roof Sheathing

After several years of this there may be dark rings around protruding roofing nails and larger dark spots or areas on the roof sheathing and or exterior gable walls.

Blackened roof sheathing.

The following picture is of a long standing moisture condition in an attic where much of the roof sheathing has turned black. Treating and venting the flat roof section would be impossible due to the limited access. Also a heavy layer of snow on the surface of the roof will insulate the sheathing and may keep the frost from melting altogether. Mold on the underside of roof sheathing is also very common.

At this time the ventilation should be entirely removed and insulation installed directly on to the roof sheathing. Therefore our recommendation was to focus on lowering the interior humidity levels and wait until the roof is due for replacement. Mold can form but often it. Thanks for sharing it.

When the roof sheathing is rotted or damaged or when other structural repairs are needed a tear off is unavoidable. The presence of mold inside your home even if it. Small stains may only be this surface moisture bleeding out minerals or dirt from the wood and are often brownish in colour. That whole site is loaded with cool pictures.

This can be caused by the action of fungal growth and molds and the affect they have on the tannins in the wood. Mold growing on the sheathing in your attic is a serious problem that shouldn t be ignored. When moisture condenses on plywood roof sheathing repeatedly or continuously the wood will turn black. Jim katen oregon.

Ive spent hours staring at a single picture. When attic surfaces or insulation contain a large reservoir of toxic or allergenic mold and if the area were inaccessible say because the space is too small to enter then it may be necessary to remove some portion of roofing. Mold that grows on the underside of roof sheathing due to ideal mold growth conditions being present. If the frost does melt it will further wet the wood in the attic staining it.