Dedicating a room of a new home theater with the latest flat-panel TV and state-of-the-art sound system? Then the last thing you want to do is wake the kids while you’re watching the DVD or have your entertainment ruined by your neighbors’ noisy central-air compressor.

QuietRock drywall is a soundproofing wall and ceiling panel that manufacturer Quiet Solution claims will reduce up to eight times more noise than ordinary gypsum board. The QuietRock comes in varying thicknesses in 4x8-foot sheets, with additional sizes up to 4x12 feet.

QuietRock 510 (shown), suitable for DIY installation, according to the manufacturer, costs $40 for a 1⁄2-inch 4x8-foot sheet; the same-size panel of the 5⁄8-inch 530 costs about $130. The highest-performance panels are 1-3⁄8 inches thick.—Ed Perratore