QUESTION: I have three window A/C units that I used to take down and store for the winter, but I am too old to carry them to the attic and would like to leave them in the windows all year. What is the best way to seal them? I can see daylight around them so I know they are not tight in the window.

ANSWER: You can weatherize them. Buy an outside cover for each unit. For those indoor daylight cracks, buy Mortite, a flexible, forever soft rope caulk that will fit those cracks nicely. For the wings, where the a/c unit fits into the window, fit 1-inch Styrofoam insulation snugly into place for a tight fit.

And, you can build an insulation box with a 1-by-3 border filled with Styrofoam insulation, to fit over the whole shebang, from casing to casing.

QUESTION: While sealing my driveway with Latexite, some of it spattered onto a small area of the bottom corner of the garage door. I plan to paint a small area of white trim around the door, as well as the cement foundation. But I am stumped as to what to do with the vinyl siding and door areas that the material was spilled on. It has mild texturing, and though I scrubbed most of it off, I can't get it out of the texturing. What can I do?

ANSWER: Keep scrubbing. That driveway sealer is probably a tar emulsion, and is soluble with paint thinner. Wet the stains with paint thinner and scrub with the brush. Repeat as necessary. And to prevent headaches in the future, don't bother to seal the driveway; it is 95 percent cosmetic and a waste, in my opinion, of time, effort, and money.

And: Do not paint the foundation; if the foundation is bare concrete, you can use a light-colored semitransparent stain.

Handyman on Call Peter Hotton is available 1 to 6 p.m. Tuesdays to answer questions. Call 617-929-2930. Hotton also chats online about house matters from 2 to 3 p.m. Thursdays. Go to www.boston.com. Hotton's e-mail is photton@globe.com

The Boston Globe