Owner-operated · Homeowner guide · Alpharetta
How Screens Keep Bugs Off Alpharetta PorchesAlpharetta · Fulton County
Alpharetta: You step onto your screened porch in Windward just after dusk, hoping for a quiet evening with tea and the hum of cicadas. Instead, gnats swarm your face and mosquitoes find every gap—leaving you wondering how screens are supposed to keep bugs out at all. Owner-operated, with a free written estimate.
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Homeowner guide · Alpharetta
How do screens keep bugs out of a Georgia screened porch?
Screens keep insects off an Alpharetta porch only when the mesh, the frame it sits in and the trim around every edge work together without leaving small gaps for gnats to slip through.
- The owner comes to the visit and writes the estimate himself
- Crews with 10+ years of combined experience
- Insured (general liability)
- Rated 5.0 on Google across 31 reviews as of Nov 2026
- Photos from our own jobs, not stock images
Alpharetta
Screen Basics
Screens work by creating a physical barrier that stops insects from flying through while allowing air and light to pass. The mesh size is small enough to block most gnats and mosquitoes but large enough to keep breezes moving through the space.
In Alpharetta’s humid summers, even tiny openings can let in swarms, especially near tree-lined yards in neighborhoods like Broadlands where moisture lingers and bugs breed in standing water. A screen alone isn’t enough if the frame or edges leave gaps.
Alpharetta
Panel Fit
Each screen panel must fit snugly within its frame with no rattling or shifting. If panels are loose, wind can push them aside or create gaps along the sides where insects slip through unnoticed.
We measure each opening carefully during build or repair so panels sit flush, reducing the chance of bugs finding a path in around the edges, especially important on porches facing Webb Bridge Road where evening breezes can shift panels if not secured.
How it works
Five steps. No surprises.
Call, text, or send the form
Tell us what is going on: a new deck, a repair, or “not sure yet.” We reply the same day.
Free on-site visit
Breno looks at the deck or the yard himself, measures, and goes over your options with you.
Written estimate
Scope, materials and price come in writing, so you know the plan before anything starts.
Schedule and permits
We agree on a start date and confirm any city, county or HOA requirement for your address first.
Build and final walk-through
Breno is on the job, and we go over the finished work with you before we call it done.
Real B&T work
Photos from real jobs
Real photos from B&T projects in North Georgia, not necessarily from Alpharetta.
Alpharetta
Edge Sealing
The real bug defense happens at the edges where screen meets frame, post, or door. Gaps here—even as small as a pencil width—let in mosquitoes and pollen, which is a major irritant in Fulton County during spring and early summer.
We use flexible spline and weather-resistant sealants to close those edges tightly, screening out not just bugs but also airborne pollen that drifts in from lawns and trees near Old Milton Parkway, keeping the air cleaner and more breathable.
Alpharetta
Door Design
Screened porch doors need special attention because they open and close frequently. A poor fit at the top, bottom, or sides creates a moving gap that bugs exploit every time someone enters or exits.
We build doors with overlapping seals and magnetic or weighted closures that stay shut when not in use, so even on still evenings near downtown Alpharetta, the door doesn’t become a highway for gnats looking for a way in.
Alpharetta
Ceiling Fans
Ceiling fans don’t kill bugs, but they disrupt flight patterns by creating uneven air movement that makes it hard for mosquitoes and gnats to navigate and land.
In Alpharetta’s thick, still air under tree cover, a fan adds helpful turbulence that pushes bugs away from seating areas, working with the screen to make the porch feel less inviting to pests without chemicals or sprays.
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Alpharetta
Why Build Tight Matters More
A tight build stops bugs before they reach the screen, because even the finest mesh fails if air—and with it, insects—can leak around the frame or under the door.
We focus on solid framing, precise cuts, and sealed joints so the screen does its job, especially in older decks around Windward where settling over time can create new gaps that weren’t there when the porch was first built.
Straight answers
Alpharetta homeowner questions
Why do I still see gnats on my Alpharetta screened porch even with new screens installed?
Gnats are tiny and can find the smallest gaps—often where the screen meets the frame or at the door threshold. A tight build with sealed edges stops them before they reach the mesh, which is why fit matters more than the screen material itself.
How does pollen get through my screened porch in Broadlands during spring?
Pollen grains are smaller than most insects and can slip through standard screen mesh or enter through unsealed edges. Sealing the frame and using finer mesh where needed helps reduce the amount that blows in from nearby trees and lawns.
Will a ceiling fan really help keep mosquitoes off my porch near GA-400?
Yes, a fan creates air movement that makes it hard for mosquitoes to fly steadily and land. In Alpharetta’s humid, still evenings, especially near busy corridors like GA-400, a fan adds a practical layer of comfort that works with your screen to reduce bites.
What causes gaps to form in an older screened porch in Johns Creek over time?
Wood framing can shift or settle due to moisture and temperature changes, especially on moderate slopes common in Fulton County. This movement opens small spaces at joints or under doors that weren’t there when the porch was first built.
How do I know if my screened porch door is sealing properly in Milton?
Close the door and look for light showing around the edges or feel for air movement with your hand. If you see or feel leaks, the door likely needs adjustment, new spline, or weatherstripping to restore a tight seal against bugs and pollen.
Can tree cover in Windward make bug problems worse on my screened porch?
Yes, dense tree shade holds moisture and reduces airflow, creating ideal conditions for mosquitoes and gnats to thrive. While trees add beauty, they can increase bug pressure, making a tight build and ceiling fan even more important for comfort.
Does humidity in Alpharetta affect how well my screened porch keeps bugs out?
High humidity makes the air feel still, which lets bugs hover and find gaps more easily. It also increases mosquito activity, so combining a tight screen build with a ceiling fan helps counteract the still, muggy conditions common in Fulton County summers.
What should I check first if bugs are getting into my porch near Old Milton Parkway?
Start by inspecting the screen door—look for gaps at the bottom, sides, or top where light or air comes through. Then check the screen spline in the frame for looseness or damage, as these are the most common entry points for insects seeking shelter.
How does B&T help Alpharetta homeowners build screens that actually keep bugs out?
We focus on precise panel fit, tight edge sealing, and door design that minimizes gaps. Breno visits in person to assess your porch, and we offer a free written estimate and stand behind our work for a full year to ensure lasting comfort and protection. To talk it through, text or call Breno at 470-863-3707.
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What the neighbors are saying
These are verified Google reviews from B&T customers.
★★★★★
“If you're looking for a trustworthy contractor, B&T Properties is the right choice. Great workmanship, fair pricing, and excellent customer service.”
★★★★★
“Breno and his team exceeded our expectations. They were organized, efficient, and truly cared about delivering a high-quality result. We couldn't be happier.”
Who’s doing the work
About B&T Properties
Owner-operated by Breno. Collectively, our team brings 10+ years of deck-building experience, and B&T Properties carries General Liability insurance. Serving Alpharetta and the rest of Fulton County.
Upgrades
Make it yours: popular upgrades
Ask about any of these when Breno comes out for your free estimate. They are easiest to price in when we plan the project, not after it is built.
Cover or screens
Shade, rain cover or screens, planned in from the start.
Stairs and landings
Wider steps, a landing, or a second set of stairs down to the yard.
Lighting
Stair and post lights that make evenings outside safer and nicer.
Composite decking
Low-maintenance boards in a range of colors, priced next to wood so you can compare.
Written warranty
1-year workmanship warranty
B&T Properties backs the workmanship on every job for one year after completion, free of charge when the fault is ours. It does not cover material defects, natural wear, weather damage, misuse, a lack of upkeep or work by others. To claim, write to us and we will inspect.
Free written estimate
Tell Breno about your Alpharetta deck — free and in writing.
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