I recently moved into a new apartment and as great as it is, none of the windows have built-in screens. There are several trees in the front of the building that are home to some birds and squirrels who could easily stop in for a visit, so I decided that I definitely needed to pick up some adjustable window screens.
Even though the screens expand to fit the window, their fixed height is limiting.
And once they're installed, you can no longer adjust the height of the window opening. So if it rains, your only choice is to let your stuff get wet or shut the window completely. Since I live on the second floor and the windows overlook a busy sidewalk, I was also concerned about the screens falling out and hitting someone below, especially when I was removing the screens from the window.
I came up with a super easy way to secure the screens and still allow the window to be opened as much or as little as needed. With a little velcro, you can affix the screens to the inner window frame. They won't fall out, and you can adjust the window opening for as much fresh air as you want. The windows can be closed when it's cool or rainy and the screens can easily be removed and stored during the winter months.
Step 1: Materials
You'll need to purchase some adjustable window screens. My local Home Depot carries a variety of sizes and I bought the 18" high version. http://www.homedepot.com/p/W-B-Marvin-21-37-in-Wide-x-18-in-High-Wood-Frame-Adjustable-Window-Screen-AWS1837/202088352
You'll also need some Velcro. I bought the sticky back variety. I decided to get the precut square tabs, because I wanted a very clean look and uniformly sized pieces. The blister pack was also available at my local Home Depot. http://www.homedepot.com/p/VELCRO-Brand-7-8-in-Sticky-Back-Squares-12-Pack-90073/202261912
The only other item you will need is a sharp cutting tool. I always recommend a snap-off blade knife. The blades are economical and you always have a sharp edge to cut with. http://www.homedepot.com/s/snap%2520off%2520knife?NCNI-5
Step 2: Attach and Trim the Velcro
This step is pretty self-explanatory. Attach the fuzzy loop side to the screen. I put two pieces on each vertical edge, and trimmed to fit.
Step 3: Attach Velcro to Window Frame
The easiest way to install the screen is to attach the "hook" halves of the velcro to the "loops" on the screen and gently slide into place.
Although the adhesive takes 24 hours to achieve maximum strength, you only have a short time to re-adjust if necessary.
If you are worried about the adhesive pulling the paint off the frame, you can use a staple gun instead to attach the velcro. Just remember not to expose the adhesive back.
Step 4: Enjoy Adjusting Your Windows!
Step 5: Paint the Wood Frame to Match the Window
This is an optional step, but really adds a nice finish to the project.