Why Interior Security Bars Matter
Security Bars for Inside: High Vulnerability
Security Bars for Inside are crucial for safeguarding your home from intruders. Ground-floor windows, basement egress windows, and even second-story windows accessible by balconies are prime targets for opportunistic break-ins. Statistics show that nearly 30 % of residential burglaries occur through windows.
Limitations of Alternative Solutions
Window sash pins and keyed locks can be defeated in seconds with basic tools.
Security screens add some resistance but often fail under sustained force.
Exterior grilles may violate HOA rules or local ordinances, and they permanently alter curb appeal.
Advantages of Interior Security Bars

Understanding SWB’s Interior Security Bar Options
Model Name | Profile | Mounting Style | Release Option | Best For |
---|---|---|---|---|
SlimLine Fixed | 2 cm bars | Interior jamb brackets | Removable with tool | Bedrooms, home offices |
HeavyDuty Fixed | 3.5 cm bars | Interior jamb brackets | Permanent | Basements, ground-floor windows |
Quick-Release Slider | 2 cm bars | Interior jamb channels | Single-motion lever | Egress-required windows, children’s rooms |
Decorative Infill | 2 cm bars + infill panels | Jamb brackets | Removable | Living rooms, common areas |
- SlimLine Fixed: Minimal visual intrusion; installs with low-profile L-brackets that tighten against the jamb.
- HeavyDuty Fixed: Extra-thick bars anchored with heavy-duty steel toggle bolts—ideal where permanent denial is required.
- Quick-Release Slider: Bars slide into narrow channels; an internal lever disengages all bars at once in under two seconds.
- Decorative Infill: Adds ornamental scrollwork or geometric panels between bars for a design-forward look.
Accurate Measurement: The Foundation of Success
- Clean & Prepare the Opening
Remove any existing sash hardware, debris, or loose paint from the window jamb. A smooth surface is essential for bracket seating. - Verify Level & Plumb
Using a 1 m carpenter’s level, check the head jamb and both side jambs. Maximum deviation to correct with shims: 2 mm per meter. - Measure Width
- Measure the inside-to-inside width of the window opening at the top, middle, and bottom.
- Record the smallest width to ensure the bars slide into place easily.
- Measure Height
- Measure from the interior face of the head jamb to the sill on the left and right sides.
- Use the smaller of the two measurements for ordering.
- Note Reveal Depth
- Measure from the interior wall face (drywall or plaster) to the window frame face.
- This dimension dictates bracket length and ensures bars do not protrude into living space.
- Sketch & Photograph
- Draw a simple, labeled diagram of your measurements.
- Photograph the opening with a tape measure in view. This minimizes quoting errors and expedites your order.

Selecting the Right Interior Security Bar Model
- Assess Your Needs
- Permanent vs. Removable: Bedrooms that never require egress can use HeavyDuty Fixed; egress windows should use Quick-Release Slider.
- Aesthetic Preferences: Living rooms and entryways benefit from Decorative Infill for a polished look.
- Mounting Surface: Drywall-only jambs may require toggle bolts; wood jambs can support standard L-brackets.
- Choose Your Finish
- Matte Black: Modern, high-contrast look.
- Crisp White: Blends with most interior trims.
- Custom RAL Colors: Match cabinet hardware or accent walls.
- Order Your Kit
Provide SWB with your measurements, model selection, and finish choice. Your kit will include bars, brackets or channels, anchors, and any quick-release hardware or infill panels.
Tools & Materials You’ll Need
- Drill with bits appropriate for drywall, wood, or masonry (per anchor instructions)
- Tape measure, pencil, carpenter’s level
- Phillips and flat-head screwdrivers or impact driver
- Rubber mallet (for sliding channel models)
- Safety glasses and work gloves
- Silicone sealant (optional, for weather stripping or vibration dampening)
- Vacuum or brush for cleaning debris

Security Bars for Inside: Step-by-Step Installation Guide
A. Installing SlimLine Fixed Bars
- Layout & Dry Fit
- Place bars in front of the window opening on a drop cloth.
- Position L-brackets on the ends of each bar to confirm fit.
- Mark Bracket Locations
- Slide the entire assembly into the opening.
- Use a level to confirm bars are vertical.
- Mark bracket hole positions on the jamb with a pencil.
- Drill Pilot Holes
- Remove bars and brackets.
- Drill pilot holes sized for provided screws or anchors.
- Attach Brackets
- Secure bottom brackets first.
- Place bars into brackets, then secure top brackets—tighten evenly to seat bars without warping.
- Final Check
- Wiggle each bar to confirm rigidity.
- Apply silicone bead around bracket edges if desired to reduce vibration noise.

Security Bars for Inside: Installing HeavyDuty Fixed Bars
Follow the same steps as SlimLine, but:
- Use toggle bolts or masonry anchors rated for at least 200 lb pull-out force.
- Tighten anchors firmly—overtightening can crush drywall or split wood.
C. Installing Quick-Release Slider Bars
- Mount Upper Channels
- Position the top channel in the head jamb, level horizontally, and mark pilot holes.
- Drill and secure with screws.
- Mount Lower Channels
- Align directly beneath the upper channel, using a level.
- Drill and secure lower channel.
- Insert Bars
- Slide each bar into upper channel, then down into lower channel.
- Bars should move freely when unlocked but seat firmly when engaged.
- Install Release Lever
- Mount the lever kit on the head jamb at a comfortable height (34–48 in AFF).
- Connect release pins or rods per SWB template so that activating the lever withdraws all bars simultaneously.
- Test & Adjust
- Lock bars in place, then activate release lever—bars should disengage smoothly.
- If any binding occurs, loosen bracket screws slightly, adjust alignment, and re-tighten.
D. Installing Decorative Infill Panels
- Attach Base Bars
- Install SlimLine or HeavyDuty bars per their respective instructions.
- Fit Infill Panels
- Slide decorative panels between bars before tightening final bracket screws.
- Ensure panels sit flush; shim gently if needed.
- Secure Panels
- Some designs include small clips or set screws—secure infill through designated holes.

Frequently Asked Questions
Q: Will interior bars damage my window frame?
A: Properly installed, SWB’s brackets distribute load evenly. Use the recommended anchor type for your jamb material to prevent damage.
Q: Do I need a permit?
A: Interior security bars rarely require permits, but always verify local building codes—especially for egress windows.
Q: Can children or pets accidentally release quick-release bars?
A: Release levers can be installed at heights above reach or guarded with childproof covers; discuss options with SWB’s technical team.
Q: Will bars block my view?
A: SlimLine bars occupy only 2 cm of airspace and can be spaced up to 12 in apart to maximize visibility and light. Decorative infill panels can be chosen for open patterns that preserve sightlines.

Security Bars for Inside: Secure Your Windows Today
Interior security bars deliver an immediate, effective upgrade to your home’s safety—without altering your exterior or violating HOA covenants. Here’s how to proceed:
- Measure your window openings carefully, following Section 3.
- Choose the SWB model and finish that fits your aesthetic and security needs.
- Order your kit—provide sketches and photos to SWB for rapid quoting.
- Gather tools and follow the installation steps in Section 6.
- Practice maintenance and emergency release drills as outlined in Section 7.
In conclusion, installing Security Bars for Inside is a proactive and smart decision for any homeowner concerned about safety. Whether your windows are on the ground floor, basement, or even higher levels accessible by balconies, Security Bars for Inside act as a formidable barrier against break-ins. Investing in Security Bars for Inside today is an investment in both peace of mind and property value. Secure your windows, secure your future.
Every unprotected window is an opportunity for burglars. With SWB’s Security Bars for Inside, you close that opportunity—and open a gateway to lasting peace of mind.
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