If your primary concern is flies, wasps, and other large insects – and you don’t face mosquito‑borne diseases – a fly mesh screen may be the perfect solution. It is lightweight, economical, and easy to install, making it ideal for garages, porches, workshops, or temporary use. However, not all fly mesh screens block mosquitoes. In this guide, we explain the differences, the best materials for fly screens, and when you should upgrade to a finer mosquito screen.
What Is a Fly Mesh Screen?
A fly mesh screen is a coarse mesh barrier (typically 14×16 or 16×16 threads per inch) designed to keep out larger flying insects: houseflies, bluebottles, wasps, hornets, moths, and beetles. The larger openings (about 1.2‑1.5mm) allow excellent airflow (90‑95%) and clarity, but they may allow small mosquitoes and midges to pass through. Fly mesh screens are often made of fiberglass or PET (polyester) to keep weight and cost low.
When to Use a Fly Mesh Screen
- Garage windows – Flies are common, but mosquitoes are less of a concern in garages.
- Porches and screened‑in patios – Where you want maximum airflow and don’t mind an occasional mosquito.
- Workshops or barns – Protection from flies and wasps without blocking air movement.
- Seasonal cabins or RVs – Temporary protection that is easy to remove.
- Commercial kitchens (back doors) – To meet health codes by blocking flies, while allowing staff to move freely.
If you live in an area with West Nile virus, EEE, or dengue, a fly mesh screen is not sufficient – you need a proper mosquito screen (18×18 or finer).
Materials for Fly Mesh Screens
- Fiberglass – The most common and cheapest. Lightweight, flexible, but sags over time and tears easily. Lifespan: 3‑5 years. Suitable for low‑use or temporary fly screens.
- PET (polyester) – More durable than fiberglass, UV‑resistant, does not sag. Lifespan: 5‑7 years. A good mid‑range choice for fly screens.
- 304 stainless steel – Overkill for a fly screen but available. It is heavy and expensive. Only needed if you also want to block mosquitoes or need pet‑proof durability.
Fly Mesh Screen vs. Mosquito Screen
- Mesh density – Fly: 14×16 or 16×16. Mosquito: 18×18 or finer.
- Airflow – Fly: 90‑95%. Mosquito: 85‑90%.
- Cost – Fly: much cheaper (fiberglass) to moderately more (PET). Mosquito: higher cost, especially with stainless steel.
- Insect blocking – Fly screens do not stop small mosquitoes, midges, or sand flies.
Product Options for Fly Mesh Screens
MBORMC offers fly mesh screen variants of our standard products:
- H05 Self‑Adhesive Velcro Screen in fiberglass or PET – The most economical and easiest to install. No drilling, removable, and residue‑free. Perfect for renters who only need fly protection.
- H01 Retractable Screen in PET mesh – For windows where you want the screen to roll out of sight. PET mesh is more durable than fiberglass but still lightweight.
- Fixed frame screens in fiberglass – The lowest cost permanent solution. Ideal for garages or basements.
For most fly‑only applications, we recommend the H05 with fiberglass mesh. It costs around $30‑$60 per window (depending on size) and installs in 5 minutes.
Installation Tips for Fly Mesh Screens
- Clean the window frame – Use isopropyl alcohol to remove dust and grease.
- Apply the hook‑and‑loop tape – Peel the backing and stick it to the frame.
- Press the screen into place – The loop side is sewn around the screen’s edge. Align carefully.
- Trim any excess – For custom sizes, we pre‑cut, but you can also order slightly larger and cut yourself with scissors (for fiberglass).
No tools, no drills, no mess.
When to Upgrade to a Mosquito Screen
If you notice small mosquitoes entering despite having a fly mesh screen, you have two choices: live with it or upgrade to a true mosquito screen (18×18 mesh). In many US states, West Nile virus is endemic, so even occasional mosquito bites carry risk. For bedrooms, living rooms, and any room where you sleep, we strongly recommend upgrading to a 304 stainless steel mosquito screen. The extra cost is minuscule compared to the health risk.
How to Order a Custom Fly Mesh Screen
- Measure your window or door – width and height in mm or inches.
- Choose material – fiberglass (cheapest), PET (durable), or stainless steel (overkill for flies).
- Choose product type – H05 (velcro) is most common for fly screens.
- Submit dimensions via our inquiry form or WhatsApp.
- Production & shipping – 7‑10 days manufacturing, then sea or air freight to your US address.
- Install in minutes – no tools required.
Frequently Asked Questions
- Do fly mesh screens stop all flies? Yes, standard houseflies and most larger insects cannot pass through 16×16 mesh.
- Can a fly mesh screen be used as a mosquito screen? No – it will let small mosquitoes through. Use 18×18 or finer for mosquitoes.
- How do I clean a fly mesh screen? Vacuum or wipe with a damp cloth. Fiberglass can be washed with mild soap.
- Are fly mesh screens pet‑proof? No – pets will tear fiberglass or PET screens. For pets, upgrade to 304 stainless steel mosquito screens.
Conclusion
A fly mesh screen is an excellent, affordable choice for garages, porches, and areas where mosquitoes are not a major concern. For maximum economy, choose a fiberglass velcro screen (H05). For slightly better durability, choose PET. But if you need mosquito protection or have pets, invest in a 304 stainless steel mosquito screen. MBORMC offers custom sizes for any need. Request your free quote today →