WINDOW MATERIALS The Learning Center Here's a thorough list of questions about window materials for which you need to know the answers. Click individual questions to get the answers you've been looking for!   1.  What makes one window stronger than another?   2.  Why is the strength of a window important?   3.  What are the pros and cons of vinyl replacement windows?   4.  What are the pros and cons of fiberglass windows?   5.  What are the pros and cons of wood windows?   6.  What are the pros and cons of aluminum or steel windows?   7.  Do foam-filled vinyl frames have any advantages?   8.  How important is quality weather-stripping? 3245 Miracle Drive Murrysville, PA 15668 724-387-2991 PA Contractor ID PA001856