Can I install a keyed lock in my sliding patio door if it didn't come with one?Roger E., Katy, Texas You have two options: You can get a general retrofit kit from an outfit like Swisco.com (it ...

A newly-installed, efficient patio door stops drafts, saves energy and eliminates leaks. Learn how to DIY a sliding glass door replacement.

Q: I have a patio door handle that is all screwed up. The thing hardly even locks anymore. Can I repair the lock or do I have to buy a new one?