![]() ![]() Often these are due to mold problems in specialized buildings. Occasionally we encounter a noteworthy project that creates unique challenges. A visual inspection of the backside of the ceiling is the only way to properly identify the extent of the mold growth. Far more mold growth may be present on the backside of the sheet rock than the side facing the room. The opposite is true for roof leaks, pipe leaks, etc. Mold testing is often recommended in these situations. If you don’t see mold, there won’t be mold on the other side of the ceiling. Just stand in the middle of the room and look up. If the mold growth is due to elevated airborne moisture, the extent of the mold growth will be readily discernible from the interior of the home. Identify the extent Condensation based ceiling mold: Mold growth is confined to a single region.Mold/staining follows as circular pattern.Still unsure whether or not you’ve got mold? Read our guidance on mold testing. The colder temperature leads to condensation, which causes the soot and dust particles to stick. The framing is a worse insulator than the surrounding fiberglass, which passes through to the ceiling below. Why? The lines correspond to the framing joists in the attic above. Ghosting often appears in perfectly straight lines. Over time, these particles cause a permanent stain. It occurs when soot and dust particles stick to the ceiling. ![]() While mold growth on the ceiling is often obvious, there is another building defect that can look eerily similar. Over time, mold growth occurred on the ceiling. Although the water never touched the ceiling, the flooded flooring created extremely high humidity throughout the entire home. In the photo above, ceiling mold was due to an extensive flooding event while the home was unoccupied. Occasionally the mold growth is due to a combination of both factors. Liquid moisture problems are due to direct liquid water exposure, i.e. Humidity problems occur when warm, moisture-laden air interacts with a cool ceiling, causing condensation and subsequent interior mold growth. For the sake of clarity, let’s look at the most common ceiling problems in two broad categories: 1.) Humidity. Moisture and mold problems can occur on the ceiling for a variety of reasons.
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