DIY Vinyl Storm Windows

Measuring a window frame

Vinyl storm windows can cost up to half the price of replacement windows and are not difficult to install.

Choosing vinyl storm windows means cutting your heating and cooling costs because they make your home’s existing windows more energy efficient.

The maintenance of vinyl storm windows is simply because they will not warp, rot, rust, or need painting. Removable sashes make cleaning the vinyl storm windows easy.

Types of Vinyl Storm Windows

Vinyl storm windows are available in both double track and triple track combination storm windows and screen. The vinyl storm window is affixed directly to the existing window frame. Ventilation is made possible by sliding the screen.

How to Install Vinyl Storm Windows


Measure all of the windows that will have vinyl storm windows and be sure that all measurements are accurate before ordering.

If the vinyl storm windows do not fit properly they will not have a tight seal or operate correctly.

Gather Supplies

Make sure you have all the supplies you need before you get started so you can flow through the process without interruption.

Get Started

Drill holes around the frame of the vinyl storm windows every 12 inches if needed. Most vinyl storm windows come with pre-drilled screw holes.

Add Adhesive

Man installing a window

Apply caulk to the frame of the vinyl storm windows. Then add caulk to the outer edges of the house window frame. Take care to distribute the caulk evenly so the vinyl storm windows will have a good seal.


Gently press the prepared vinyl storm window into the opening of the house window. Make sure the vinyl storm window is centered and level. Leave a slight gap at the top for expansion due to temperature changes and ensure that the bottom is touching the windowsill.


Now that the vinyl storm window is in place try the storm windows and screen for proper smooth use.

The vinyl window screen frame may need adjusting if there is a problem with sliding the storm windows and screen.

Complete the Installation

Start at the top of the vinyl storm window to drill in screws and move around the window until all of the holes are filled. After fastening the vinyl storm windows, caulk the bottom edge.

Use caution not to caulk holes at the bottom of the vinyl storm windows. These holes release moisture from the vinyl storm windows.

If the window does not have drainage holes along the bottom edge leaving a couple of small spaces open.

To finish the project secure the vinyl storm window extender to the main windowsill. Accomplish this by putting the screws in the window sill so the screw heads hold the extender in place.