i use to be a roofer best thing to get tar off of anything is KARNA clean
http://www.karnakcorp.com/pro_op.html
Quote:
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Karna-Klean is a biodegradable non-toxic petroleum free cleaner/degreaser with all natural ingredients. The base ingredient in this highly concentrated formulation is a natural solvent obtained from orange peel and pulp, giving Karna-Klean a pleasant scent of fresh oranges.
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expensive as shit but it'll take the tar off of anything and it smells like oranges
