Also, that amount of rust would certainly have stained the ceiling tiles, which could also be affected by the moisture. If the rust is extensive enough to have penetrated the paint on these metal bars, it may be too late to prevent further progression. If the corrosion is visible on the painted bottom portion of the grid, then there may be no other option than to take down and replace these members. They are very easy to use, but care must be taken to cover the already painted portions of the T-bars, to prevent overspray from the new paint. There are several brands of spray paint in cans, available at any paint supply, hardware store or home centre, which claim to prevent rust reoccurrence. If that works, coating the cleaned bars with rust-resistant paint may nip the problem right in the bud. Tiny amounts of surface rust on the hidden portion of the metal bars may be removed with steel wool, sandpaper, or a grinder. They may never corrode enough to be a structural or esthetic concern, now that the source of moisture is gone. If there is only a small amount of rust on the unpainted upper steel sections, then they may be fixable. If only a portion of the ceiling T-bars are moderately or badly rusted, especially if it is limited to the hidden portion above the tiles, then complete replacement may not be warranted. The extent of the corrosion will likely determine how involved the repairs need to be. If the moisture issue is more extensive, causing most or all of the metal bars in the basement ceiling to rust, replacement will be more costly. Once reinstallation is complete, the original ceiling tiles may be reused, if not damaged. I would recommend contacting a commercial supplier of drywall and ceiling products, if not available at a retail home centre. That is a strong possibility even with a properly vented exhaust fan, but may occur at a much slower rate. I would suggest looking for replacement components made of aluminum, instead of steel, to prevent a reoccurrence of the corrosion. Since that is a small area, it should not be that costly to remove the ceiling entirely and discard or recycle the rusty metal components. Firstly, if the rusty T-bars are only seen in the bathroom, then the solution should be quite straightforward. The approach to dealing with this may be different depending on which scenario is seen in your home. In your home, the small cavity above the ceiling would get the brunt of this moisture, making quick evaporation impossible.įrom your submission it is not clear whether the rusting suspended ceiling bars are limited to the bathroom ceiling, or the entire basement. The results of this can often be more concentrated than with missing ventilation, as the moist air drawn from the bathroom fan is dumped into a smaller area. Most often it is caused by the lack of a working exhaust fan, but as in your case, it is sometimes due to an improper, damaged or disconnected duct coming from the fan. I have seen this issue many times in basement bathrooms which have been improperly or inadequately ventilated. It is unusual to get an inquiry like yours, where the solution to the problem has already been identified, and likely remediated. Unfortunately, replacement of the rusted T-bars in your suspended ceiling may be the only way to permanently prevent further corrosion and deterioration. Phillips.Īnswer: Identifying the exact cause of an issue that has caused damage or deterioration to a component in your basement is your first step to remediation. Short of replacing all the grids, is there anything than can be applied to them that would remove the rust? K. Now we have rust on most of the metal ceiling grids. Question: I made a big mistake, after finishing our basement, with not hooking up the bathroom ceiling fan. Rust on the grids of a drop ceiling is a recipe for disaster and requires remediation.
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