Owens Corning
Install an Octagon Window
An octagon window is an attractive and practical solution to bring light into a small dark foyer. While the stop sign-shaped window brings daylight inside, it adds an architectural feature on the interior and exterior of the house. You'll find these wooden specialty windows, which are fixed or opening, sold at home centers. Installing one is a doable project for a handy homeowner with carpentry experience.

Assuming the exterior of the house has wood, aluminum or vinyl siding (not brick or concrete), a contractor will charge $300 to install a wooden, 24-inch-diameter, octagon venting window with insulated glass. You can buy the window for $100 and install it, pocketing a 67 percent savings.

If the thought of cutting a hole in the exterior siding of your house is intimidating, then hire a carpenter. But if you're up for the job, here's what's involved.Pro vs DIY Cost and Time

You'll need basic carpentry tools, plus a power saber saw to cut through the siding. Cut the rough opening to size as specified in the installation instructions. As you position the unit in place use wooden shims to adjust and level it. Caulk the unit and paint the trim inside and out.

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