Protect your home without looking like a prison. Discover why Interior Mounting is the 2026 standard for aesthetics, HOA compliance, and weather protection.
For decades, "burglar bars" meant ugly iron cages welded to the outside of a house. They rusted, they stained the stucco, and they screamed to the neighborhood, "I am afraid!"
Enter Interior Window Burglar Bars.
In 2026, the paradigm has shifted. Homeowners want security that is Personal, not Public. By moving the bars to the inside of the glass, you achieve three things:
When installing inside, you have two architectural choices. Understanding this is critical for interior design integration.
The "Stealth" Choice. The bars are mounted inside the window jamb (the depth of the wall).
Benefit: The bars sit flush with the wall. You can hang curtains or blinds over the bars, making them completely invisible when drapes are closed.
The "Easy" Choice. The bars are mounted to the drywall/trim around the window.
Benefit: Easier to install if your window frames are shallow (less than 3 inches deep). However, they protrude into the room.
A critical technical specification for interior bars is the Glass-to-Bar Gap.
You do not want the bars touching the glass. Condensation can transfer to the steel, causing paint failure, or thermal expansion can cause the bar to crack the glass.
The SWB Protocol: Maintain a minimum 1.5-inch air gap between the glass pane and the security bar. This also prevents a burglar from getting leverage with a pry bar against the glass surface.
Why do interior bars last longer? The data from our 2026 Lifecycle Analysis is clear.
Let's settle the debate once and for all.
| Feature | Exterior (Traditional) | Interior (Modern) |
|---|---|---|
| Curb Appeal | Negative (Aggressive) | Positive (Hidden) |
| HOA Approval | Difficult / Banned | Automatic (Inside Home) |
| Glass Protection | Protects Glass | Sacrifices Glass (to save home) |
| Emergency Egress | Hard to access latch | Easy (Latch is right there) |
Note: Interior bars "sacrifice the glass" because the thief must break it to hit the bars. This is a small price to pay for superior aesthetics and tamper resistance.
Context: You live in a designated historic preservation zone. Exterior changes are illegal.
Solution: Install White SWB Model A bars inside the sash. From the street, they look like standard window mullions (colonial grid). Compliance achieved.
Context: Landlord forbids drilling into the stucco/brick exterior.
Solution: Use a pressure-fit or minimal screw installation into the wooden window frame inside. Easy to patch with wood filler when moving out. Zero damage to the building envelope.
A: If you use "Face Mount" bars, yes, they will push the blinds out. If you use "Reveal Mount" (deep inside the frame), you can usually mount blinds outside the frame (surface mount) to cover the bars completely.
A: This is easier with interior bars than exterior ones. Most interior systems (like SWB) are removable or hinged. You simply unlatch them, wipe the glass, and latch them back. No need to go outside with a ladder.
Security shouldn't feel like a cage. By bringing the protection inside, you gain control over the aesthetics, the climate, and the rules.
🛒 Shop Interior Solutions
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Last Updated: 01/01/25
