• Sash Replacement – This type of replacement involves replacing the existing sash in a traditional wood or clad wood double hung window. It should only be considered if there are no issues with water intrusion or frame degradation, and the existing frame is plumb and square. This can be a relatively non intrusive way to replace sash and balance systems with higher performing glass in new sash. Another benefit is that interior and exterior trim are not disturbed. A window professional should always verify measurements and frame conditions as this type of replacement will not work if not ordered with perfect accuracy.
• Pocket Replacement – This type of replacement fits a complete new engineered window inside an existing frame condition. Generally, the new window will have less visible glass width than the original window. If the existing window frame is in poor condition, out of square, or if there are water intrusion issues, a pocket replacement is not a recommended solution. Always have a window professional verify measurement and frame conditions to insure a proper fit.
• Full Frame Replacement – This type of replacement is generally the best solution as the new window is actually installed as a new construction detail and is not dependent on existing frame conditions that may be compromised and not properly flashed to the building envelope. This method involves completely removing the existing window and installing a complete new engineered window system into the opening according to the latest scientific methods and approved materials. After installation, new exterior and interior trim are installed.
Kansas City Building Supply can assist you in determining which method best fits your application, aesthetic requirements, and conditions.
By: Bernard Timmer