Security Guide
Burglar Bars for Windows: The Complete Guide
Everything you need to know about burglar bars — effectiveness, types, fire codes, and the best modern options.
Last updated: May 2026 · 10 min read · Reviewed by SWB Technical Team
Do Burglar Bars Actually Work?
Yes — burglar bars are among the most effective physical security measures available for residential windows. The FBI's residential crime research shows that most residential burglars are opportunistic: they target homes where entry is easy and quick. Window bars eliminate that opportunity.
Types of Burglar Bars
01
Adjustable Telescopic + Modular Bars (Recommended)
The most versatile and cost-effective option for homeowners. These bars adjust to any window size — no custom fabrication required. SWB's lineup (Model A, Model B, Model A/EXIT) uses this system.
ADVANTAGES: Fits any window, DIY install, fire-code compliant options, from $99.
BEST FOR: Homeowners with multiple windows of different sizes.
02
Fixed Welded Iron Bars
Custom-fabricated bars welded to a frame and bolted to the wall. Highest security rating but require a contractor, cannot be moved, and need a separate egress kit for bedrooms.
ADVANTAGES: Extremely strong, customizable design.
BEST FOR: Commercial properties or high-crime areas where permanent installation is preferred.
03
No-Drill / Tension Bars
Spring-pressure bars that wedge inside the window opening without drilling. Renter-friendly but significantly weaker — typically 100–200 lbs lateral resistance vs. 500+ for bolted systems.
BEST FOR: Renters who cannot modify walls.
04
Decorative / Ornamental Bars
Wrought iron bars with scroll, fleur-de-lis, or other decorative patterns. Moderate security, attractive appearance, but prone to rust and require professional installation.
Fire Code Requirements for Burglar Bars
CRITICAL — SAFETY REQUIREMENT
The single most important thing to know about burglar bars: any bar installed on a bedroom window must have a quick-release mechanism under IBC § 1030 and most state fire codes. Installing non-compliant bars in bedrooms creates legal and safety liability.
SWB's Model A/EXIT is fully compliant — the quick-release is integrated, not added on.
How to Choose the Right Burglar Bars
Measure your windows: Width and height of the clear opening (not the glass).
Identify your wall type: Wood/vinyl frame → Model A. Masonry/concrete → Model B.
Note bedroom windows: Any sleeping area → Model A/EXIT required for fire compliance.
Budget: SWB starts at $99/module. Use the Cost Calculator.