Black Spots On Attic Ceiling

The insulation was contaminated and we inspected the attic side of the ceiling drywall below for signs of leak stains or mold.

Black spots on attic ceiling.

If the dots you are seeing are roughly 3 8 of an inch or 10mm in diameter and are very uniform then this is likely the case. You have mold that should be removed. What are the tell tale signs of an attic mold problem. In old houses you ll usually see some spots that are stained dark or black where there was a roof leak at some point in time which was repaired but the stain remains.

Dark black staining on wood surfaces if the wood in your attic shows any black discoloration the problem has moved beyond moisture. Ghosting happens when mildly damp warm and possibly sooty interior air condenses on the sections of walls and ceiling that are colder because they are that uninsulated section of the wood frame. Walls that are improperly insulated may develop mold because they will absorb moisture from outside. This has got to be the most disgusting type of ceiling stain if you ask me.

Black sooty stains on your walls and ceilings that follow the patterns of the framing. If the dark surface of the wood smudges it could be mold. Attic feels excessively hot or stuffy attics should feel breezy if they are properly ventilated. The surfaces that black mold will grow on in your attic in the attic the most common places to find black mold are the places where water is likely to be a problem.

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. This can normally be identified if the dots are very uniform in size and conformation. The narrow dark stains on the ceiling show the location of ceiling joists and the wide black sooty stain in the upper left of the photo shows where ceiling insulation is less or has been omitted entirely. Long narrow parallel black or gray ceiling stains in buildings may be due to thermal tracking as we explain here.

The new roof doesn t help much most of the moist air is likely coming up from below. The most commonly seen cause of small black dots in homes is corrosion on fasteners holding the drywall to the wall and ceiling framing. That is a stain caused by mold mould. Most of the time dirt accumulates on ceilings because air is leaking in from the attic between the drywall and the supply register.

When an attic is stuffy that indicates you have a ventilation problem which often results in mold problems. This will obviously only be a possibility if your geyser is located above the ceiling in an attic. To fix this problem you will most likely need a specialist. Attic moisture and poor ventilation are the causes.

You may have to replace the geyser if there is no way to fix the problem. If the wood is soft if it s easily imprinted when you push on it it s probably rotten.