Black Spots On Attic Ceiling

The new roof doesn t help much most of the moist air is likely coming up from below.

Black spots on attic ceiling.

Attic feels excessively hot or stuffy attics should feel breezy if they are properly ventilated. Reader comments q a. If the dark surface of the wood smudges it could be mold. The insulation was contaminated and we inspected the attic side of the ceiling drywall below for signs of leak stains or mold.

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. You have mold that should be removed. 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. 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.

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 will obviously only be a possibility if your geyser is located above the ceiling in an attic. Walls that are improperly insulated may develop mold because they will absorb moisture from outside. What are the tell tale signs of an attic mold problem.

To fix this problem you will most likely need a specialist. 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. This can normally be identified if the dots are very uniform in size and conformation. You may have to replace the geyser if there is no way to fix the problem.

Long narrow parallel black or gray ceiling stains in buildings may be due to thermal tracking as we explain here. That is a stain caused by mold mould. 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. If the wood is soft if it s easily imprinted when you push on it it s probably rotten.

If the register is closed the air is forced along the ceiling and the next thing you know you ll start to see black buildup across your ceiling. Black sooty stains on your walls and ceilings that follow the patterns of the framing. When an attic is stuffy that indicates you have a ventilation problem which often results in mold problems. The most commonly seen cause of small black dots in homes is corrosion on fasteners holding the drywall to the wall and ceiling framing.

Attic moisture and poor ventilation are the causes. Most of the time dirt accumulates on ceilings because air is leaking in from the attic between the drywall and the supply register.