Our condo units are 23 years old. A recent inspection of the sprinklers had some rust on the exterior of the pipes near the sprinklers.
Can we wire brush these areas and spray with a rust inhibitor, or do we need to replace all those pipes?
Are other inspections needed to see if any rust is inside the pipes or how thick the pipe steel remains?
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5/26/2023 08:04:47 am
My recommendation is to have a licensed contractor perform some non-destructive testing to determine the pipe condition. Wire brushing or spray painting will just hide the problem.
5/26/2023 08:11:28 am
Agreed on the solution, call 1 or 2 contractors to take a look and give you an opinion.
5/26/2023 08:14:41 am
Exterior rust (not from a pipe leak, just atmospheric moisture) is common and really not an issue if it's light, especially without an active leak on steel pipe. Anyone recommending replacement at that minimal level to you, I would get a second opinion (again, assuming this is not an active leak and it's limited to surface rust).
5/26/2023 08:44:57 am
I concur with Dan, this is likely just surface rust from ambient moisture. All of the solutions posted above are sound ideas
5/26/2023 09:34:29 am
It sounds like you are an owner of the building or condo, or at least the rep for the owner. If so, ultimately it is up to you on repair vs replacement. Two things: 1. Reliability and ability of the system to perform and 2. possible future water damage cost.
5/26/2023 03:34:14 pm
I agree with Dan and Jesse
6/2/2023 09:26:54 pm
The rust on the outside of a pipe is oxidized steel that provides a non reactive coating that actually inhibits further oxidation. Removing the rust will expose metal that has not been oxidized and which is susceptible to oxidation and further deterioration. Therefore, do not remove the rust. It is actually providing protection of the pipe.
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