There's nothing like having a client call and tell you a window you installed is leaking. Ruined interior finishes and rotting framing are bad enough, but worst of all is the damage to your reputation as a skilled and reliable contractor.

However, if you follow the basics, you needn't worry. In this slide show, veteran builder and JLC Live presenter Carl Hagstrom demonstrates the right way to install a flanged window unit by detailing the housewrap and flashing tape so that any water that gets behind the siding will drain safely to the outside.

Carl says, "Flashing windows properly isn't difficult, and adds only about 15 minutes in labor and about $15 in materials per unit. As a builder, there's nothing I do in one day that puts more dollars in a house than installing the windows. Spending a little extra time getting things right sure makes sense to me."

To read the entire article as it appeared in JLC, click here.