How to Install a Magnetic Fly Screen
Installing a magnetic fly screen takes about 15-30 minutes and requires minimal tools. The screen attaches to your door frame using adhesive strips or pins, with magnets running down the centre that automatically close after you walk through.
Table of Contents
- Tools and Materials You'll Need
- Preparing Your Door Frame
- Installing the Magnetic Fly Screen
- Testing and Adjusting Your Screen
- Maintenance and Care Tips
- Frequently Asked Questions
- Related Guides
Tools and Materials You'll Need
Before starting your installation, gather everything in one place to make the process smoother.
Essential Items
- Magnetic fly screen kit (includes screen and fasteners)
- Measuring tape
- Scissors or craft knife
- Cleaning cloth and methylated spirits
- Stepladder (for taller door frames)
Optional but Helpful
- Pencil for marking positions
- Level tool for straight alignment
- Extra adhesive strips (backup)
- Drawing pins or thumbtacks (alternative fixing method)
Most magnetic fly screens come with adhesive Velcro strips or hook-and-loop tape. Check your kit contents before purchasing additional materials.
Preparing Your Door Frame
Proper preparation ensures your screen stays secure throughout the New Zealand summer.
Clean the Surface
Wipe down your door frame thoroughly with methylated spirits. Remove dust, cobwebs, and any greasy residue. The adhesive won't stick properly to dirty surfaces, and you'll end up with gaps that let insects through.
Allow the frame to dry completely—usually 5-10 minutes depending on humidity.
Measure Your Doorway
Measure the height and width of your door frame from the outer edges where you'll attach the screen. Most standard New Zealand doors measure 2040mm high by 820-920mm wide, but always verify your specific measurements.
If your screen is too large, you can trim it. If it's too small, you'll need a different size—magnetic screens don't stretch effectively.
Mark Your Position
Lightly mark where the top of your screen will sit. Starting level at the top prevents the entire screen from hanging crooked, which creates gaps at the sides.
Installing the Magnetic Fly Screen
Follow these steps in order for the best results.
Attach the Top Section First
Peel back about 30cm of the adhesive backing from one corner of the hook-and-loop tape. Press firmly onto the top of your door frame, starting from one side. Work across gradually, removing more backing as you go.
Press firmly for 30 seconds along the entire top section to activate the adhesive bond.
Secure the Sides
Work down each side of the frame, keeping the screen taut but not stretched. The screen should hang naturally without wrinkles or sagging. Press the adhesive strips firmly every 15-20cm as you move downward.
For extra security on frequently used doors, add drawing pins through the fabric into wooden frames every 30cm.
Attach the Bottom
The bottom section receives less traffic, but secure it properly to prevent insects crawling underneath. Some people prefer to leave a small gap (5-10mm) at the bottom to prevent the screen dragging on the floor, which causes wear.
Align the Magnetic Seam
The two halves of your screen meet in the middle with a magnetic strip running vertically. Ensure these magnets align perfectly from top to bottom. Run your hand down the seam—it should seal completely with no gaps.
If the magnets don't align, you may need to adjust one side slightly by carefully peeling and repositioning the adhesive.
Testing and Adjusting Your Screen
Walk through your new screen several times to test the magnetic closure.
Check the Seal
The magnets should pull the screen closed within 1-2 seconds of walking through. Stand on both sides and look for light gaps, which indicate where insects might enter.
Make Adjustments
If you notice gaps, check whether:
- The screen is hanging level
- The adhesive has bonded fully (wait 24 hours for maximum strength)
- The magnetic strips are aligned correctly
- The screen is the right size for your frame
Small adjustments now prevent frustration later during peak fly season.
Consider Wind Conditions
New Zealand homes often have strong cross-breezes. If wind pushes your screen open, add weighted hem tape to the bottom or install a secondary magnetic catch halfway down the seam.
Maintenance and Care Tips
Regular maintenance extends your screen's lifespan through multiple seasons.
Weekly Cleaning
Vacuum the screen gently using a brush attachment to remove dust and cobwebs. This prevents buildup that weighs down the fabric and weakens the magnetic seal.
Monthly Deep Clean
Remove the screen (if using Velcro attachment) and hand wash in lukewarm water with mild detergent. Hang to dry completely before reinstalling. Never machine wash, as this damages the magnetic strips.
Seasonal Checks
Before summer arrives, inspect the adhesive strips and replace any that have lost their grip. Check the magnets still align properly and the fabric hasn't torn.
Store your screen during winter if you won't use it, which protects it from unnecessary wear.
Frequently Asked Questions
How long does a magnetic fly screen last?
With proper care, quality magnetic fly screens last 2-4 years. UV exposure, frequent use, and weather conditions affect longevity. Screens on north-facing doors in direct sunlight typically need replacing sooner.
Can I install a magnetic screen on a sliding door?
Yes, but you'll need a screen specifically designed for wider openings. Standard door screens won't span the width effectively. Measure your sliding door and purchase an appropriately sized screen.
Will the magnets work if I have pets?
Most dogs and cats learn to push through magnetic screens within a few days. The magnets close automatically behind them. However, very small pets may struggle, and large dogs can damage the screen over time with rough use.
Do magnetic screens keep out mosquitoes as well as flies?
Yes, provided the mesh is fine enough (look for 1mm or smaller holes) and the screen seals properly with no gaps. Check the product specifications before purchasing if mosquitoes are your primary concern.
Can I install a magnetic screen on a caravan or RV door?
Absolutely. Magnetic screens work well on caravans, motorhomes, and holiday homes. Ensure the door frame is clean and consider using additional pins for security during travel, as vibration can weaken adhesive bonds.
Related Guides
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Last updated: January 2025