Will new siding keep bugs out? Learn how proper installation and sealing reduce insect entry in Quad Cities homes.
Protection & Sealing
Will New Siding Stop Bugs From Getting In?
By JR Girskis
5 minute read
Short answer: it can help—but only if the job is done right.
New siding doesn’t act like a sealed barrier that keeps bugs out on its own. What it does is give you the opportunity to tighten the exterior of your home—closing gaps, repairing damage, and sealing entry points where insects typically get in.
Where Bugs Actually Get In
Insects don’t come through solid siding panels—they find weak points.
Common entry points include:
- Gaps around windows and doors
- Utility penetrations (hose bibs, outlets, vents)
- Damaged or rotted wood behind siding
- Poorly sealed trim and corner areas
If those areas aren’t addressed, new siding simply covers the same access points.
How New Siding Helps (When Done Correctly)
A properly installed siding system reduces insect entry by tightening the building envelope.
That includes:
- Sealing gaps at trim, corners, and transitions
- Repairing damaged sheathing or wood
- Installing house wrap as a continuous barrier
- Flashing and sealing around all penetrations
This is what actually keeps bugs out—not the siding itself, but the system behind it.
What the Vinyl Siding Institute Emphasizes
According to Vinyl Siding Institute (VSI) installation principles, vinyl siding is designed as a water-shedding cladding—not an airtight seal.
That means:
- It must be installed over a proper water-resistive barrier (house wrap)
- All openings must be flashed and sealed correctly
- The system should allow airflow while controlling moisture
When those steps are followed, you naturally reduce gaps where insects can enter.
Why This Matters in the Quad Cities
Homes in Davenport, Bettendorf, Moline, and Rock Island deal with:
- Humidity that attracts insects
- Seasonal changes that open and close gaps
- Older construction with worn exterior details
These conditions make proper sealing and repair even more important during a siding project.
Where Homeowners Go Wrong
The biggest mistake is treating siding as a cover—not a correction.
- Skipping inspection of underlying damage
- Not sealing penetrations properly
- Ignoring trim and transition details
- Choosing a lower bid that cuts prep work
Bugs don’t care how new the siding looks—they go where the gaps are.
Why Experience Matters
Identifying and fixing these issues isn’t always obvious during a walkthrough.
JR Girskis and Darin Wilson bring over 20 years of exterior design and installation experience in the Davenport area. That experience shows up in knowing where to look—behind trim, around penetrations, and at transition points where insects and moisture tend to enter.
The difference isn’t just installing siding—it’s correcting the weak points before the new system goes on.
The Bottom Line
New siding can reduce bugs getting into your home—but only when it’s installed as part of a properly sealed exterior system.
The real value comes from repairing damage, sealing gaps, and building a tighter envelope—not just covering the outside.
In the Quad Cities, where homes deal with moisture, movement, and seasonal pests, the difference between “new siding” and a properly built system is what determines whether those problems actually go away.