Learn how to install Pella® windows into existing frames from our knowledgeable product experts.
Select Existing Frame Type
Wood Double- or Single-Hung Window Installation Instructions
Pocket Replacement from the Exterior for Block Frame Windows
The existing sashes and exterior stops of the old double- or single-hung window are removed along with any balances or jambliners. The new window is placed against the interior stop from the exterior.
Pocket Replacement from the Interior for Renovation or Precision-Fit Windows
The existing sashes of the old double- or single-hung window are removed by cutting the balance chords and removing the interior stop and parting stops. The new window is placed against the exterior stop from the interior. The interior stops can then be re-installed.
Pocket Replacement into Aluminum Frames in Stucco with Walls for Flush Flange Windows
The existing window sashes are removed. The new window is placed inside the existing frame. The new window's flush flange covers the old frame and is sealed to the stucco.