QUESTION: I am doing some remodeling in my home and I want to install more attractive interior doors. I also want them to seal better so I can zone heat and close off some rooms. Will pocket doors work?ANSWER: Pocket doors are one of the best options for your decor and energy-efficiency plans. With today's high heating and cooling bills, it does make sense to close off unused or seldom-used rooms.Zoning your home (keeping various rooms at different temperatures) is probably the best method to lower your utility bills without sacrificing comfort. This can be done with an automatic zoning air delivery system or just controlling the air flow with duct dampers or register covers.With either method, it is important to be able to have a well-sealing interior door so you also can control the amount of open area. Pocket doors, which slide inside the wall, allow totally variable opening positions.On the other hand, a standard swinging door is either open or closed. As soon as you swing it open just a little, the open area is very large. Also, a partially opened door will stick out into the room and will likely swing either more opened or closed on its own or if it gets bumped.Pocket doors are particularly effective in new home construction because installing them saves a lot of floor space. At $50 to $100 per square foot, this results in a huge savings.In an existing home, count the number of swinging doors and consider the total wasted clearance space required for them to swing open.From a decorating standpoint, pocket doors offer much more flexibility. Since part of the wall is not covered when the door is open, wall decorations can be placed along the door opening. Also, decorative leaded glass and other ornate doors can be used and are still visible when the pocket door is partially opened. Pocket doors with glass panels will allow more light into a room.Using a pocket door hanging kit makes installing a pocket door a reasonable do-it-yourself project. Some kits are even called "Pocket in a Box." The typical kit includes the top rail, ball-bearing rollers, guides, mounting plates, and split studs. The steel-encased split studs make it easy to create the pocket inside the wall. The hardware often has a lifetime warranty.Before you purchase pocket door installation kits, select the type of doors you desire. The model of pocket door kit required depends upon the weight of the door. The maximum door weights for various kits range from about 75 pounds to 250 pounds.Pocket door privacy locks are available, so if you use one, don't forget to include it in your weight calculation.The following companies offer pocket door hardware kits: Arthur Cox, (800) 456-5656, www.acox.com; John Sterling, (800) 367-5726, www.johnsterling.com; L.E. Johnson, (800) 837-5664, www.johnsonhardware.com; Ledco, (800) 626-6367, www.ledcodoors.com; and National Manufacturing, (815) 625-1320, www.natman.com.Send inquiries to James Dulley, Butler Eagle, 6906 Royalgreen Dr., Cincinnati, OH 45244 or visit www.dulley.com.QUESTION: I have used mirrors in my house to reflect light and brighten the rooms. One large mirror is glued to the wall and I need to move it. What is the best way to remove the mirror without damaging the wall?ANSWER: Mirrors are effective for reflecting light and reducing the need for lamps. No matter what method you use to remove it, you will have to do some surface refinishing of the drywall, but hopefully not too much.Take two blocks of wood and attach stout fishing line to them. Place the line behind the mirror and move it back and forth in a sawing motion. If this does not cut through the glue, try using stranded picture hanging wire instead.James Dulley has a degree in mechanical engineering. His Sensible Home column appears in 400 newspapers.