Install a glass block window
Over the years the window above a bathtub in an older home succumbs to exposure to moisture and its wooden frame and sill rot away. Replacing the window with a glass block unit designed for the job is a good solution because it allows light in from the outside while providing privacy inside. The replacement unit is an all-in-one pre-constructed glass block window laid up and framed into easy-to-install vinyl jambs and come in dozens of standard sizes. You'll find them where building materials are sold at lumber yards and home centers.

While this used to be a job for a pro, a handy homeowner with carpentry experience and tools can do the job. It involves removing the old window, sizing the rough opening to the proper dimensions, fastening the block window in place, and reinstalling interior and exterior units. And most of the work is done from the interior side of the wall.

A contractor will charge $556 to replace an old window with a new 32-inch-by-24-inch glass block unit. If you have carpentry experience you can buy it for $245, install it, and pocket a 56 percent saving. Plan to budget more time and money if the siding and framing around the old window frame is damaged and requires rebuilding.

To find more DIY project costs and to post comments and questions, visit and on smartphones.

Pro Cost -- DIY Cost -- Pro time -- DIY Time -- DIY Savings -- Percent Saved

$556 -- $245 -- 5.9 -- 11.0 -- $311 -- 56 Percent