I use a pneumatic staple gun to install composition shingles, and every now and then the tool will clog up because roofing tar gets into the tip and the safety mechanism. Now I carry a can of Gum Out carburetor cleaner on the roof with me. Whenever the gun starts to get sticky, I give it a shot of the carburetor cleaner. It dissolves the tar without my having to disassemble the tool. Gum Out is available at auto-supply stores.
Jeffery A. Oswalt, Kimmell, IN
