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Cleaning a roof under the swamp cooler.

D

DesertZoe

New member
Painted a house and customer asked about cleaning off the calcium/hardwater deposits on the asphalt shingles under the swamp cooler.
What would be best procedure and solution?
Thanks
 
Guy Blackmon

Guy Blackmon

New member
I think there are 2 chems that will take care of calcium, acid or caustic. But I wouldn't use them on a roof. Take a pass on this one!
 
J

James Foley

New member
Acid- I have had good luck getting rid of difficult stains on roofs with Eaco chem products. I start with the weakest soultion and work my way up.
 
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