Are window security bars effective at preventing burglary?

Yes. In a survey of 422 incarcerated burglars by UNC Charlotte's Department of Criminal Justice (funded by the Alarm Industry Research and Educational Foundation), 60% said they would seek a different target if an alarm was present. Burglars favor targets they can enter quickly and quietly, and a physical barrier removes exactly that.

What is the difference between window bars and window guards?

The terms are often used interchangeably. 'Window bars' typically refers to steel bar systems focused on security. 'Window guards' can also refer to child safety products that prevent falls. For security purposes, both terms describe the same category of products.

Do window security bars require permits?

In most jurisdictions, window bars do not require a building permit for installation on existing windows. However, if you're adding bars to new construction or making structural modifications, check local building codes. Always verify fire code compliance (especially in bedrooms).

How long do window security bars last?

Quality galvanized steel window bars like SWB's models have an expected lifespan of 30+ years with basic maintenance. Rinse exterior bars quarterly in humid or coastal areas to prevent corrosion.

Can window bars be installed on any type of window?

With the right mounting system, yes. SWB's telescopic + modular design fits standard frames, masonry walls, irregular openings, vinyl windows, and wood frames. Measure your clear opening width and height to determine the correct configuration.

COMPLETE GUIDE

WINDOW SECURITY BARS:
THE COMPLETE 2026 GUIDE

Everything you need to know — types, costs, installation, fire codes, and how to choose the right bar for your home.

Updated: May 202615 min readSWB Compliance Team

Quick Answer

Window security bars are the most effective residential burglary deterrent available — Burglars favor targets they can enter quickly and quietly. A steel bar removes the smash-and-grab option and forces a slower, louder, more visible entry. For most homes: Model A telescopic fits any window, DIY in 15–30 min, from $99. Bedrooms require quick-release egress (Model A/EXIT, IBC § 1030). Bars do not reduce property value and do not require permits in most states.

In This Guide

01What Are Window Security Bars?02Types of Window Bars 03How to Choose 04Installation Guide 05Fire Code Requirements 06How Much Do They Cost?07Top Brands Compared

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01 — BASICS

What Are Window Security Bars?

A burglar selects their target in under 60 seconds. That moment — standing at the edge of your property, scanning ground-floor windows — is the entire decision. FBI data shows 63% of forced residential entries happen through doors and windows that offered no visible resistance. The house next door, with bars on the ground-floor windows, gets passed every time.

Window security bars are physical barriers installed over window openings to prevent unauthorized entry. They are the most effective deterrents against residential burglary — more effective than alarm systems alone, because they physically prevent entry rather than simply detecting it after the fact.

Modern window bars have evolved significantly from the welded iron bars of the past. Today's systems are adjustable, aesthetically designed, and fire-code compliant — solving the main objections that historically made bars unpopular. This guide covers everything you need to make the right decision.

✓Key fact: burglars favor targets they can enter quickly and quietly (UNC Charlotte / AIREF, 422 offenders surveyed)

An alarm tells you a burglar entered. A window bar means they couldn't. That's the difference between filing a police report and not having to.

02 — TYPES

Types of Window Security Bars

The five main categories are telescopic + modular (adjustable, most versatile), fixed welded steel (highest security, permanent), no-drill / tension (renter-friendly, lower security), decorative / ornamental (aesthetic focus), and quick-release / egress (required for bedrooms). For most homeowners, telescopic + modular bars offer the best balance of security, fit, and fire code compliance.

Telescopic + Modular

Best overall — adjusts to any window

Fixed Steel Guards

Highest security — permanent installation

No-Drill / Tension

Renter-friendly — no holes required

Decorative / Ornamental

Aesthetic focus — wrought iron designs

Quick-Release / Egress

Fire code required — bedroom windows

Full Type Comparison — Pros, Cons & Prices →

03 — SELECTION

How to Choose the Right Window Bar

Consider these four factors:

Window Size & Type

Measure your clear opening: width (jamb to jamb) and height. If you have non-standard or varying window sizes, a telescopic + modular system saves significant money and effort vs. buying custom bars.

Wall/Frame Material

Wood or vinyl frames: Model A works perfectly with frame-mount hardware. Masonry, concrete, stucco: Model B is designed specifically for wall-mount on these surfaces.

Fire Code Compliance

If you're installing bars on bedroom windows, fire code in virtually all US states requires a quick-release mechanism. Use Model A/EXIT for any sleeping area.

Budget

SWB bars start at $99 per module. Each module covers roughly one standard window. Use our Cost Calculator to estimate your total project cost.

04 — INSTALLATION

Installation Guide Overview

SWB bars are designed for DIY installation in 15–30 minutes per window. All hardware and anchors are included. You need: a standard drill, measuring tape, pencil, and bubble level.

Measure

Clear width + clear height. Write these down.

Mark & Drill

4 mounting points. Use included anchors for your wall type.

Install & Test

Insert bars, adjust to size, tighten screws. Verify with level.

Read the Full Installation Guide →

05 — FIRE CODE

Fire Code Requirements

The most important thing to know: Any window bar installed in a bedroom or sleeping area must have a quick-release mechanism that can be operated from inside without tools or keys.

This is required by IBC Section 1030, IRC R310, NFPA 101, and state-specific codes in California, New York, Florida, and virtually all other US states.

✗Bars without quick-release: Violate fire code

✗Bars without quick-release: May violate FHA mortgage requirements

✗Bars without quick-release: Expose homeowners to liability

SWB Model A/EXIT is fully compliant — its integrated quick-release mechanism meets all US fire codes with no additional kit required.

Full Fire Code Guide by State →

06 — COST

How Much Do Window Security Bars Cost?

Option	Cost Per Window	Notes
Budget DIY (big box)	$25–$60	Fixed size, limited security
SWB Direct (telescopic)	$99–$114	Adjustable, fire-code compliant
Professional install	$300–$600	Custom + labor
Heavy-duty commercial	$500–$1,500+	Schedule 40 pipe, pro install

Use the Free Cost Calculator →

07 — BRANDS

Top Brands Compared

The window bar market has several players. Here's how the major brands compare:

✓

SWB (Security Window Bars)

Telescopic + modular system, fire egress integrated, from $99. Best overall.

✓

Grisham

Budget option at Home Depot, fixed sizes, no integrated egress.

✓

Mr. Goodbar

Strong in Canada, available in US, fixed sizes, requires separate egress kit.

✓

Unique Home Designs

Hinged options, limited vertical adjustment.

✓

Home Depot / Lowe's store brands

Budget $25–$60, fixed sizes, minimal security rating.

Full Brand Comparison →

SWB Compliance Team

SWB's in-house compliance and product team. Every code reference and specification on this page is sourced and linked.

The SWB Compliance Team writes and reviews the technical content on this site. Every code reference is cited to its source — IBC, IRC, NFPA or the applicable state or city code — so you can verify it yourself. Final compliance is determined by your local authority having jurisdiction (AHJ).

FAQ

Window Security Bars FAQ

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WINDOW SECURITY BARS: THE COMPLETE 2026 GUIDE