How to Repair a Torn Window Screen
Updated September 18, 2026
Can I do this myself?
Safe to DIY
Yes, patching and rescreening is safe work done on a table. The main risk is falling while removing screens from upper-floor windows, so take them out from inside where possible and leave hard-to-reach ones to a professional.
A torn window screen lets mosquitoes, flies and other insects into the house, which is more than a nuisance in areas with mosquito-borne diseases. Screens tear from pets, children, windblown debris or just old, brittle mesh. Luckily, they are among the easiest things in a home to repair.
Small holes can be patched in minutes with a screen patch kit or a square of spare mesh. Larger tears, or brittle mesh that keeps splitting, call for rescreening: pulling out the old mesh and rubber spline, then rolling in new ones with an inexpensive spline roller. It’s a satisfying job that most people get right the first time.
The riskiest part isn’t the repair itself, but getting the screen off, especially on upper floors. Many screens can be removed from inside the house. Don’t lean out of windows or climb a ladder to an upper storey to take a screen down; if it can only be removed from outside, ask a professional.
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Signs of the problem
- A visible hole, tear or split in the mesh
- Mesh pulling away from the frame at the edges
- Insects getting in with the window open
- Sagging, stretched or wavy mesh
- Brittle mesh that cracks when touched
Common causes
Pets and children
Most commonCats and dogs claw or push against screens, and children lean on them. The mesh stretches or tears, often near the bottom of the frame.
Sun and age
Most commonUltraviolet light and heat make fibreglass and plastic mesh brittle over the years. Old mesh cracks from light contact and small holes keep appearing.
Loose or shrunken spline
SometimesThe rubber spline holds the mesh in a groove around the frame. When it dries out and shrinks, the mesh pulls loose from the edges, leaving gaps even though the mesh itself is intact.
Impact damage
SometimesWindblown branches, balls, hail or careless cleaning can puncture or tear the mesh. Aluminium mesh may also dent and crease.
Safety first: before you start
- Critical:Remove screens from inside the house where possible. Never lean out of an upper-floor window to reach a screen.
- Critical:If a screen can only be reached from outside above ground level, use a ladder only on the ground floor with it on firm, level ground and someone holding the base. For upper floors, leave it to a professional.
- Never rely on a window screen to stop a child or pet falling. Screens are not safety barriers; use window guards or stops where needed.
- Utility knife blades are very sharp. Cut away from your body and retract the blade when not in use.
- Wear gloves when handling metal mesh; cut edges are sharp.
Tools & materials
Tools
- Spline roller (with convex and concave wheels)
- Utility knife with a fresh blade
- Flathead screwdriver or awl (to lift out the spline)
- Scissors
- Spring clamps or tape
- Flat work surface, such as a table
Materials
- Screen patch kit (for small holes)
- Replacement mesh (fibreglass, aluminium or pet-resistant), a few centimetres larger than the frame on all sides
- New spline matched to the groove size
- Clear glue or nail polish (for pinholes)
Step-by-step fix
- 1
Remove the screen safely
Look for tabs, pull rings or spring clips on the screen frame. Most screens lift up into the top channel and swing out at the bottom, or pop out after you press spring clips. Work from inside the room if the screen allows it. Sliding screens usually lift out of their track.
Warning: If the screen can only be removed from outside on an upper floor, don’t attempt it with a ladder. Get professional help.
- 2
Patch small holes
For pinholes, dab clear glue or nail polish over the hole and let it dry. For holes up to about 5-8 cm (2-3 in), use a self-adhesive patch from a kit, pressing it on from both sides. For metal mesh, cut a patch 1-2 cm larger than the hole, unravel a few edge wires, bend them at right angles, push them through the screen and fold them over.
- 3
Remove the old spline and mesh
For larger damage, rescreen. Lay the frame flat on a table. Find the end of the spline, often at a corner, lift it with a screwdriver or awl, and pull it out all the way round. Lift out the old mesh and clean dirt from the groove.
Tip: Take a piece of the old spline to the shop. Spline comes in several diameters, and the right size is essential for a tight fit.
- 4
Lay out the new mesh
Lay the new mesh over the frame so it overhangs the groove by about 2-3 cm (1 in) on every side. Keep the weave square to the frame. Clamp or tape the frame to the table so it can’t bow inward when you tension the mesh.
- 5
Roll in the mesh
Starting on one long side, use the convex wheel of the spline roller to gently press the mesh into the groove. Then use the concave wheel to press the spline in on top of it. Work along one side, then the opposite side, then the two short sides, pulling the mesh lightly taut as you go. At corners, push the spline in with a screwdriver.
Tip: Don’t overstretch the mesh. It tightens as the spline goes in, and too much tension bows the frame.
- 6
Trim the excess
Using a sharp utility knife angled toward the outside of the frame, trim the spare mesh just outside the spline. Keep the blade away from the spline itself so you don’t cut into it.
Warning: Cut away from your hands and body. A fresh blade is safer than a dull one because it needs less force.
- 7
Refit and check
Put the screen back in the window from inside, making sure all clips or tabs engage fully and there are no gaps around the edges where insects could get in.
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How to check it's fixed
- The mesh is flat and taut with no ripples, holes or gaps at the edges
- The frame is straight and fits snugly in the window
- Clips or tabs hold the screen securely in place
When to stop and call a professional
- The screen can only be removed from outside an upper-floor window
- The frame is bent, corroded or broken at the corners
- The screen is a built-in retractable or custom security mesh
- The window itself is damaged, loose or has broken glass
How to prevent it
- Use pet-resistant mesh where cats or dogs climb or scratch.
- Clean screens gently with a soft brush and mild soapy water; don’t use a pressure washer.
- Store removable screens flat and indoors during seasons you don’t need them.
- Replace brittle mesh before it starts tearing in several places.
Frequently asked questions
Can I patch a window screen instead of replacing it?
Yes, for small holes. Patch kits or a square of spare mesh work well and are quick. Rescreen the whole frame if tears are large, the mesh is brittle, or there are several patches already.
What size spline do I need?
Match the diameter of the old spline, since groove sizes vary. Take a short piece to the shop. If the new mesh is thicker than the old, one size smaller may be needed.
Fibreglass or aluminium mesh?
Fibreglass is easy to work with, doesn’t dent and is the common choice. Aluminium is stronger and more durable but can crease and corrode in coastal areas. Pet-resistant mesh is much tougher against claws.
How do I take out a screen on an upper floor?
Check for tabs or clips that let it lift out from inside. Most modern screens are designed this way. If yours can only be reached from outside, don’t use a ladder at height; have a professional handle it.
Will a screen keep my child from falling out of the window?
No. Screens are designed to keep insects out and can pop out under a small child’s weight. Use window guards or stops that limit how far the window opens.
How do I stop the new mesh from sagging or bowing the frame?
Clamp or tape the frame flat to the table before you start so the sides can’t bend inward, and roll in opposite sides one after the other. Let the spline pull the mesh tight rather than stretching it hard by hand. If the mesh ends up loose, pull out one side of spline and roll it in again.
This guide is general information, not professional advice. Homes differ, so follow your product manuals and local codes. If anything looks different from what's described, or you feel unsure, stop and call a qualified professional. In an emergency, leave the area and call your local emergency number.
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