When to Replace Your Window Screen

Window screens last 10 to 15 years with normal use, though the frame and mesh have different failure timelines. Aluminum frames last 15 to 20 years before they bend, corrode, or lose their spring tension. The mesh itself... whether fiberglass or aluminum... degrades faster. Fiberglass mesh (the most common type, that slightly flexible gray or black screen material) lasts 5 to 10 years before it becomes brittle, tears easily, or develops holes. Aluminum mesh lasts longer (10 to 15 years) but dents permanently and is harder to work with for DIY rescreening. Sun exposure is the biggest enemy. South-facing and west-facing screens take the most UV damage and deteriorate faster than screens on shaded sides of the house. You'll notice the mesh becoming stiff and crumbly on the sun-exposed side while the north-facing screens are still flexible. Pet damage is the second most common reason for replacement. Dogs and cats push against screens, creating stretches, tears, and bulges. If you have pets, consider pet-resistant screen mesh... it costs more ($15 to $30 per roll vs. $8 to $15 for standard) but it's significantly thicker and harder to puncture. Most window screens are a standard size that you can buy pre-made at Home Depot or Lowe's for $15 to $25. If your windows are non-standard sizes, you'll need custom screens ($25 to $50 each) or you can build your own with a frame kit and mesh roll.

Rescreening an existing frame takes 15 to 20 minutes per screen once you've done a couple. The first one might take 30 minutes as you learn the spline roller technique.

Tools needed: spline roller tool ($5 to $8), utility knife, flat screwdriver (to remove old spline), and a flat work surface.

Process: lay the frame flat, use a screwdriver to pry out the old spline and mesh, lay the new mesh over the frame with 1 to 2 inches of overlap on all sides, start pressing new spline into the channel on one side using the convex wheel of the spline roller, work your way around all four sides pulling the mesh taut as you go, trim the excess mesh with a utility knife along the outside edge of the spline channel.

The trick is tension... you want the mesh flat and taut but not so tight that it bows the frame inward. If the frame starts curving, you've pulled too hard. Ease up and re-roll that section.

Installing a pre-made replacement screen takes 2 minutes... slide the tabs into the window track and press the spring-loaded pins into the frame. Make sure you measure your window opening (width x height) accurately before buying.