Video: Installing Storm Windows
Watch this video to learn the basics of installing a storm window. Explore different ways to repair and improve drafty windows.
Steps to install an exterior storm window
- Measure the window
- Measure the opening width at three locations - top, center, and bottom
- Measure the opening height on the right, left, and in the center
- If the measurements differ, use the smallest of the three when ordering a new storm window.
- Both stock and custom sizes are available at local retailers
- Prep the window opening
- You may need to scrape off some old paint.
- Caulk around the sides and top of the opening before you screw the window into place.
- Exterior storm windows are designed with holes at the bottom to allow water or condensation to drain so do not caulk the bottom.
- Check that the window is square and install following the manufacturer’s instructions.
- Adjust the expander on the bottom of the window so it’s tight against the windowsill.
- A good short-term solution are window insulation kits that come with weather-stripping and plastic film that can be installed with a hair dryer to create a tight seal.
- Window insulation kits, weather stripping, and Low-E storm windows can be found at your local home improvement store.
- If you have old windows with cracked glass or rotted frames that require a lot of maintenance and are in total disrepair, replacing them with new high performance windows is probably a good idea.
- There are non-energy benefits to replacing your windows, such as improved property value and ease of use, but the cost of new windows will not likely be offset by energy savings alone.