The United States climate requires that doors and windows must meet the highest possible standards in insulation and weather proofing. They guarantee your comfort and security for many years to come.You will see in this learning video how to replace your front door. How to install new doors and windows, new patio doors, and skylights. You will see how to replace a regular window with a modern thermally efficient one. We show you how to install doorknobs, locks and other accessories - all to improve the appearance and quality of your house. This video includes: How to select quality doors and windows Doors and windows Taking proper measurements Detailed installation instructions Insulation Casement windows Sliding windows Greenhouse windows Steel doors Stained glass windows Windows in doors Skylights Doorknobs, locks and other door fixtures