2010年6月4日 · Re: Black OSB If what I see is correct it looks as if there is a nail penetrating the OSB sheathing, not that this should be unexpected since it is a roofing nail. But the inspections that I have done that have a similar staining on the OSB have usually had a …

Just report what is there - black stain on OSB. Could be a moist area in the attic. Recommend a repair to the exhaust fan vent pipe. Explain that the growth needs moisture to grow and spread spores blah blah blah, but I don't make a big deal over some stain in the attic. I can find stains in my attic, from old leaks. :)

2016年4月30日 · It appears those trusses were stained long before being placed, notice how 'clean' the OSB sheathing is. Also, the top chord appears rotted in one small area (pic 2) which was likely caused from those trusses sitting exposed to weather for a while before being installed, either that, or the house sat partially built for a long time before the roof was inst

2010年9月20日 · Can't really tell what we are looking at in #35. Photo #36 shows definite evidence of 'mold / microbial growth' probably caused by the improper venting.

2011年1月31日 · There is old black stain on the OSB sheathing of this 20 year old 2 storey house. There are 2 small patches of actively growing white mould (mold) behind the soffit vent baffles on the northfacing side of the attic. The OSB is damp in these spots. The rest of the sheathing looks not bad, see the last pic facing south.

2011年7月29日 · Re: Mold/mildew below OSB subflooring First and foremost, this crawlspace needs a poly barrier. The first step in effectively conditioning a cold musty crawlspace is to properly apply 6 mil. sheets of polyethylene barrier throughout the entire floor area.

2012年4月7日 · The nails are rusted and the plywood is delaminated on the surface. There is black stain along the top of the truss chord. All signs of past moisture trouble in that attic. The problem may have been dealt with, causing the surface coating to dry out and flake off. I don't know what those flakes taste like, so can't tell you what they are.

2012年7月10日 · Hardiplank lap siding can be installed over braced wood or steel studs spaced a maximum of 24” o.c. or directly to minimum 7/16” thick OSB sheathing. Hardiplank lap siding can also be installed over foam insulation up to 1” thick.† Irregularities in framing, sheathing, and/or foam insulation can mirror through the finished application.

Black OSB; black is the new white; Alpha Home Inspections 417- 334-7047. 09-19-2018, 11:20 AM #2. Gunnar ...

2010年7月13日 · My ridge vent was merely asthetic for years since roofer did not cut away OSB prior to installing. Now the ridge vent is right, my attic is no cooler. Soffit vents are plentiful and not clogged. Insulation is adequate in 10 y/o home. Black roof with half day worth of sun.