Q. Three questions: 1. How can I get old oil stains off a concrete garage floor? 2. Irene’s winds did a job on my house, pulling a lot of sap from pine trees and depositing it on decks and siding. How can I remove it? 3. A small chip of porcelain popped off one of my toilet bowls, well above the water line. I saved the piece. Can I glue it back, with what kind of glue?
ROBERT DESROSIERS, Chatham
A. 1. For the oil stains, wet them with paint thinner to dissolve the oil, then sprinkle lots of absorbent material on top to absorb the oil. If the work is extensive, use Speedi-Dri, a clay used to remove oil from your auto mechanic’s floor. For smaller jobs, cat litter or baking soda will do nicely. 2. If the pine sap bits are stiff and solid, scrape them up with a steel scraper. If they are sticky, wash them off with denatured or rubbing alcohol. 3. Use Duco cement, a clear glue that we used long ago on flying models made of balsa wood and paper, and they flew wonderfully.
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