Cleaning Pre-cast...Issues

Richard Ludlam

New member
Doing some testing prior to submitting proposal. Large Building with pre-cast facade

Test #1: D/S standard mix (3 gallons SH + 2 gallons water) 20 minute dwell with low pressure rinse= Looks better but far from clean
Test #2 Dedicated pump with 50/50 mix, 20 minute dwell with high pressure rinse= looks better but not 100%

Open to options and advice

Many Thanks


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Richard Ludlam

New member
Got it done! Used a mix of 9 percent sulfuric acid. Short dwell and cleaned with high heat.
Just posted for future search inquires.

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