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.

3 Likes

Looks like standard mold to me