I hae some SH from last season which has tested to about 9 % strength. Does anyone have a formula to convert to a 40 % mix on a 40 gallon mix ?
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preferred method of the roof manufacturers association
16 gallons would give you 40%. 20 gallons to 20 gallons would be the same as 60 - 40sh@13% strength. give or take a %. JMG
why is this in the general forum?
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