Lenny Schrecengost
New member
Has anyone came up with a chemical to remove the shadow left from gum? I looked at some old post. It said Sh and also time and regular maintance. Is there anything else?
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Gum shadows can be a problem of not removing completely the gum spot. But when it is like a print and there is no gum product left, most of the time it is a chemical reaction with acids (mostly) from the chewing gum and the cement. Basically you cannot remove this; the cement is colored by the acid in the gum. In most cases surfaces won't give this problem but sometimes it is a real problem. We have divided a concrete tile where it was really bad. The mark went down 3 mm!
There is also another way of getting the gum shadow completely gone.
It's called the red tip or the 0 degree nozzle :grin:
Low pressure steam, with a 25 degree tip. Removes (melts away) all the gum and gum residue. More times that not, it will leave a shadow, but with the solutions we use on concrete, these stains usually fade away during our next service. The low pressure steam method takes longer that when some splash & dash "contractor" uses high pressure, 15 degree or the unthinkable 0 degree tip,standing directly over the gum and literally digging a divot in the cream of the concrete, leaving irreversible damage to the customers property. Best way to lose your clientele, and possibly your insurance coverage.
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