If you're stuck choosing between a no see um screen vs regular screen, you've likely already spent a few miserable evenings swatting at invisible biting pests that seem to fly right through your current setup. It's an incredibly frustrating experience to invest in a beautiful screened-in porch only to realize the "screen" part isn't actually keeping the most annoying bugs out. While a standard screen is great for keeping out flies, bees, and the occasional wandering dragonfly, it's practically a front-door invitation for those tiny, blood-sucking midges we call no-see-ums.
Picking the right material isn't just about bug protection, though. It's about balancing how much air you want moving through the room, how well you can see your backyard, and how much you're willing to spend. Let's break down the real-world differences so you can decide which one will actually make your outdoor space livable.
The Biggest Difference: Mesh Size
When we talk about the difference between a no see um screen and a regular screen, we're really talking about the density of the weave. If you look closely at a standard window screen, you'll see tiny squares. Most "regular" screens use an 18x16 mesh. That means there are 18 holes per linear inch in one direction and 16 in the other. For most people, this is the gold standard. It stops mosquitoes (which are actually quite large in the insect world) and keeps the debris out.
However, no-see-ums, gnats, and certain types of sand flies are tiny—sometimes less than 1/16th of an inch. They can navigate through an 18x16 mesh without even folding their wings. To stop them, you need a much tighter weave. No-see-um screens usually jump up to a 20x20 mesh or even tighter. The holes are significantly smaller, creating a physical barrier that even the smallest biting insects can't squeeze through.
The Airflow Trade-Off
Here is where things get a bit tricky. Physics dictates that if you put more "stuff" in a square inch (more threads to make smaller holes), you have less open space for air to pass through. This is the main reason why people hesitate to go with the no-see-um option.
On a hot, humid afternoon when there isn't much of a breeze, a standard 18x16 screen allows for decent ventilation. You can feel a slight puff of wind, which helps keep the porch from feeling like a sauna. With a 20x20 no-see-um screen, the airflow is noticeably reduced. It's not that it blocks the wind entirely, but it certainly dampens it.
If you live in a place where the air is already stagnant and you rely on every bit of breeze you can get, the tighter mesh might make your porch feel a little stuffy. However, many homeowners decide that a slightly warmer porch is a fair price to pay for not being eaten alive by gnats.
Visibility and "The View"
Another thing to consider is how the screen affects your view of the outdoors. Because the threads in a no-see-um screen are closer together, the screen itself is denser. When you look through it, the screen is more "visible" to the eye than a standard screen.
Standard fiberglass screens are designed to almost disappear when you're looking through them from a few feet away. This is often called "invisible" or "better view" screening. No-see-um mesh, because it's thicker and tighter, can have a slight darkening effect. It's almost like having a very light window tint.
For some, this is actually a plus. It offers a tiny bit more privacy during the day, making it harder for neighbors to see exactly what you're doing on your porch. But if you have a million-dollar view of the mountains or the ocean, you might find the denser mesh a little distracting. It's a subtle difference, but one you'll notice once the whole porch is finished.
Durability and Material Quality
Most regular screens are made of vinyl-coated fiberglass. They're flexible, easy to install, and relatively cheap. They'll last a good while, but they aren't exactly bulletproof. If a squirrel decides it wants to get in, or if your cat likes to climb the walls, a standard fiberglass screen will tear like paper.
No-see-um screens are often made from a heavier-duty polyester or a thicker vinyl-coated fiberglass. Because the weave is so much tighter, the material itself feels "stiffer" and more substantial. Some high-end no-see-um screens, like those made of polyester, are incredibly tough. They can handle a dog jumping against them or a stray branch hitting them much better than the cheap stuff from a big-box store. If you have pets or kids, the added durability of a high-quality no-see-um mesh might be its best selling point, regardless of the bugs.
How Much Extra Will You Pay?
It shouldn't come as a surprise that no-see-um screening costs more. You're literally getting more material per square foot. Generally speaking, you can expect to pay anywhere from 1.5 to 2 times more for no-see-um mesh than you would for a roll of standard 18x16 screen.
If you're screening in a massive, wrap-around porch, that price difference can add up to a few hundred dollars. You also have to consider the labor. Because no-see-um mesh is denser and sometimes a bit thicker, it can be slightly more difficult to "roll" into the screen tracks (the spline). If you're hiring a pro, they might charge a bit more for the extra effort, though most experienced installers won't find it to be a dealbreaker.
Cleaning and Maintenance
This is a point people often overlook until six months after the installation. Smaller holes in the mesh mean smaller places for dust, pollen, and spiderwebs to get stuck.
A regular screen is pretty easy to spray down with a hose. Water and air pass through it easily, taking the dirt with them. A no-see-um screen tends to trap "fuzz" and yellow pine pollen much more effectively. If you live in a dusty area or have a lot of trees nearby, you'll likely find yourself needing to scrub or pressure-wash your screens more often to keep them looking clear. If you let the dirt build up, that already-reduced airflow will get even worse.
Which One Do You Actually Need?
So, how do you decide between a no see um screen vs regular screen for your specific project? It really comes down to your local environment.
Choose a regular screen if:
- You mostly deal with large bugs like mosquitoes, flies, and moths.
- You live in a hot climate and desperately need maximum airflow.
- You have a view you don't want to obscure even slightly.
- You're on a tight budget.
- You live in an area with very few "biting midges" or gnats.
Choose a no see um screen if:
- You live near water, marshes, or heavily wooded areas where tiny biting bugs thrive.
- You've noticed tiny specks on your skin that bite even when you're behind a screen.
- You want a screen that is slightly more durable against pets or children.
- You don't mind a slight reduction in breeze in exchange for total peace.
- You want a little extra daytime privacy.
The Bottom Line
There's no "wrong" choice here, but there is definitely a "wrong for you" choice. I've seen many people go with a regular screen because it was cheaper, only to end up rescreening the entire porch a year later because the gnats made it impossible to sit outside at dusk. On the flip side, I've seen people install no-see-um mesh in areas where those bugs don't even exist, and then complain that their porch feels too hot and dark.
Take a look at your current situation. Go outside at sunset and see what's buzzing around. If you see those tiny, hovering clouds of "pepper" in the air, don't even think about a regular screen. Go for the no-see-um mesh. Your skin (and your sanity) will thank you for it in the long run. If you just want to keep the flies off your sandwich and let the wind blow through your hair, the standard screen is probably all you need.