How do I remove a ceiling stain? First, make a bleach and water solution. Mix 1 part bleach to three parts warm water. After the solution is applied, wait 10 minutes. Rinse the stained area thoroughly and apply stain blocking primer. Repeat as necessary to completely remove the stain. This is a quick DIY solution, and you can follow the steps below to create a stain-free ceiling.
The most common cause of ceiling stains is roof leakage. A home inspector can use a moisture meter to determine if a leak is active. Here is a video clip to illustrate the process. The stain will begin as a brownish color but eventually will turn ugly brown. A moisture meter can help identify the source of ceiling stains and prevent further damage. This video clip will give you an idea of how to test for the presence of a leak.
Thermal tracking stains are a result of air movement. These stains are often parallel to one another. If your ceiling is not completely heated, this will show up as straight lines. It could also be due to missing insulation. Sooty stains may be caused by dirt in the ductwork. Regardless of the cause, a thermal tracking stain can lead to costly repairs. If you notice any of these signs in your ceiling, it’s time to contact a professional building inspector.