Sodium Metasilicate on siding

Hi all,

I was asked to cleaning the exterior steel siding of an industrial building. They process fish oil, employee who gave me a tour figured it may be a carbon build up but with how easy it was to wipe off I feel it may be organic build up. Either way I believe I have a solution for it.

I just wanted to ask if anyone has ever mixed sodium metasilicate to use as a degreaser? I see a lot of popular degreasers use sodium metasilicate or sodium hydroxide. In this case I was thinking about batch mixing SM and surfactant to possibly spray on the metal siding and rinse of, if in fact it is a carbon deposit.

Just curious of everyone’s thoughts. I have degreasers from a local chem company but this is a very large building and was thinking if possible it could be a big time cost saver.




The last picture uploaded is where I whipped off a bit of the build up.

I use SM mostly on wood but if you’re curious I would do a small test area and see if it gets you the results you want. I usually downstream SH for metal buildings….dont think they had carbon on it though. Just rinse real well with metal though.

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Looks like standard mold to me

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Downstreamed most of the job. Still on going. Got some rust removal in as well. Some of the tanks needed a higher percentage where the 12v came in handy.





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Looks great, I’d say that was a wise call. Curious what your ratio was when downstreaming?

I’ve got a 3-story apartment complex that is painted wood that has some algae and mold growing on it, and considering downstreaming SM instead of SH.

Algae and mold, so no reason not to just do a normal HW on this. SH isn’t going to bother painted wood, it’s going to clean it up nicely.

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