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Roof Cleaning Severna Park MD · guest

Is it a bad idea to mix new SH with old SH?

Iannacchione · Guest

Phil,

Just treat the old stuff like it where water.

Chesapeake · Guest

You can add the new to the old. If your old mix contained any alcohol, I would count that 20 gal as water. If it did not, then I would add your new mix and maybe another 5 gal of sh to bump up your old mix. Just remember that even though the old mix is weak, it still contains salt and by adding more sh, you are adding more salt. Salt can poison plants, so keep that in mind.

Roof Cleaning Severna Park MD · guest

Thanks for the help! Also, I just noticed I spelled "weak" wrong, doh!

Off to work! :)

Aug 7, 2010

Chesapeake wrote:
You can add the new to the old. If your old mix contained any alcohol, I would count that 20 gal as water. If it did not, then I would add your new mix and maybe another 5 gal of sh to bump up your old mix. Just remember that even though the old mix is weak, it still contains salt and by adding more sh, you are adding more salt. Salt can poison plants, so keep that in mind.

Also if you used a non-chlorine compatible surfactant (dawn or ajax), your mix will be weaker.

TSP, ammonyx lo or myristamine oxide is ok and will not weaken your bleach.

The Roof Cleaning Institute Of America Training & Certification Forum "Find A Certified Roof Cleaner Directory"

The Roof Cleaning Institute Of America Training & Certification Forum
"Find A Certified Roof Cleaner Directory"