Window security film can help hold cracked glass together, reduce shattering, and add a practical layer of protection without replacing the entire window. The best choice depends on film thickness, roll size, adhesive design, and whether you also want privacy or heat control.
We compared 10 budget-friendly options, including clear safety films, mirror privacy films, and thicker 8-mil designs, to help you match coverage and performance to your home or office.
Best 10 Window Security Films Under 100 Picks for 2026
Best Clear Coverage
BDF S4MC 4 Mil Clear Security Film
- 4-mil PET film helps hold shattered glass together
- Passes ANSI Z97.1 Class B and CPSC Category 1 requirements
- 60 sq. ft. roll with 99% UV rejection
Best For: Large, clear-glass security installations
Best Small DIY Kit
KASHIBANG 2 Mil Clear Security Film
- Clear PET film reinforces glass and holds fragments together
- Includes spray, scraping, cutting, and measuring tools
- 9.48 sq. ft. roll with stated 60-day guarantee
Best For: Small glass surfaces and first-time DIY installation
Best Compact 4 Mil Option
Qualsen Premium Clear Security Film
- 4-mil clear PET film for targeted shatter resistance
- Includes installation tools for peel-and-stick application
- Designed for windows, doors, display cases, and commercial glass
Best For: Small panes needing thicker security film
Best for Daytime Privacy
BDF S4MS15 Mirror Silver Security Film
- 4-mil film helps hold shattered glass together
- Dark silver finish adds daytime privacy and reduces glare
- 99% UV rejection with 28 sq. ft. of coverage
Best For: Windows needing security and daytime privacy
Best Clear DIY Pick
- Transparent PET film helps hold broken glass together
- UV protection with heat-insulation benefits
- Peel-and-stick installation for home or office use
Best For: Discreet DIY protection for smaller windows and glass doors
Best Complete Kit
- 4 mil transparent film for shatter and UV protection
- Includes spray bottle and scraper for DIY installation
- 365-day quality guarantee stated by the seller
Best For: First-time installers seeking a clear film with basic tools included
Best for Broad Coverage
Clear 2 Mil Security Window Film
- 10-foot roll for wider coverage
- 96% visible light transmission
- Designed to hold shattered glass together
Best For: Larger home, office, and sliding-door glass areas
Best for Easy Removal
Clear 2 Mil Removable Security Film
- Designed for residue-free removal
- Clear anti-scratch PET surface
- Helps hold shattered glass together
Best For: Temporary protection for doors, cabinets, and family homes
Best Clear Coverage – BDF S4MC 4 Mil Clear Security Film
If you want broad, unobtrusive protection, this BDF film is a strong option among window security films under 100. Its clear 4-mil PET construction is designed to help hold broken glass together while preserving the window’s appearance.
Best For: Homeowners seeking transparent security film for larger windows, with UV protection and included installation tools.
Pros:
- 4-mil film helps absorb impact and hold shattered glass together.
- Passes ANSI Z97.1 Class B and CPSC Category 1 testing requirements.
- Clear finish provides 99% UV rejection without adding visible tint.
- Includes a squeegee, knife, and installation guide.
Cons:
- Not intended for heat control.
- Interior-side installation requires careful surface preparation.
With 60 square feet of coverage, this is the most practical pick here for larger installations. It prioritizes clear visibility and tested safety performance rather than privacy or solar heat reduction.
Best Small DIY Kit – KASHIBANG 2 Mil Clear Security Film
This compact KASHIBANG film is a budget-friendly choice among window security films under 100 for smaller glass areas. The clear, self-adhesive PET film is designed to reinforce glass, hold fragments together after breakage, and reduce UV-related fading.
Best For: Small windows, sliding doors, display cabinets, and home or office projects where a complete installation kit is useful.
Pros:
- Clear film helps absorb impact and hold shattered glass together.
- Claims UV blocking plus heat insulation and seasonal energy-saving benefits.
- Includes a spray can, scrapers, utility knife, and measuring tools.
- Covered by a stated 60-day guarantee.
Cons:
- Provides only 9.48 square feet of coverage.
- Listed as 2 mil, so it is thinner than the 4-mil alternatives.
- Installation requires careful cleaning and plentiful soapy water to limit bubbles.
This is a convenient starter option when coverage needs are modest. Its included tools and clear appearance make it approachable for DIY use, but larger projects may require multiple rolls.
Best Compact 4 Mil Option – Qualsen Premium Clear Security Film
Qualsen’s compact 4-mil film is worth considering when you want thicker security film for a smaller pane. As one of the window security films under 100, it uses strong adhesive and a clear PET layer to help resist shattering and keep fragments together.
Best For: Small residential or commercial panes, sliding doors, display cases, and other glass surfaces needing added shatter resistance.
Pros:
- 4-mil construction is intended to reinforce glass and reduce fragment spread.
- Clear finish preserves the original appearance of the glass.
- Suitable for homes, stores, schools, banks, airports, and display cases.
- Includes installation tools and is designed for peel-and-stick application.
Cons:
- Coverage is limited to approximately 6.46 square feet.
- No UV protection is listed.
- Bubble-free installation still requires clean glass and plenty of soapy water.
The 4-mil thickness makes this a sensible choice for targeted protection, especially where a small roll is enough. Choose another product if UV blocking or extensive coverage is a priority.
Best for Daytime Privacy – BDF S4MS15 Mirror Silver Security Film
BDF S4MS15 Window Film Security and Daytime Privacy 4 Mil Mirror Silver (Dark) - 24in X 14ft
Check Price On AmazonFor shoppers who want security plus daytime privacy, this mirror-silver BDF film stands out among window security films under 100. Its 4-mil PET construction helps hold shattered glass together while the dark silver finish reduces glare and creates a mirror-like appearance from the brighter side.
Best For: Rooms, storefronts, and other windows where daytime privacy, glare reduction, and UV rejection matter alongside added glass protection.
Pros:
- 4-mil film helps absorb impact and hold shattered glass together.
- Provides daytime privacy with a dark silver mirror appearance.
- Reduces heat and glare while rejecting 99% of UV rays.
- Includes free tools and an installation guide.
Cons:
- Daytime privacy depends on which side has more light.
- Film is sensitive and can develop permanent wrinkles if folded.
- Requires meticulous cleaning and wet installation with plenty of soap and water.
This is the best fit when a clear finish is not essential and privacy is part of the goal. Its 28 square feet of coverage suits medium-sized projects, but careful handling is important during installation.
Best Clear DIY Pick – 0.05mm Clear Security Film
For shoppers comparing window security films under 100, this clear PET option offers a discreet way to reinforce residential or office glass. Its peel-and-stick design preserves visibility while also providing UV protection and basic heat-insulation benefits.
Best For: Homeowners and office users who want transparent, DIY-friendly glass protection without changing the window’s appearance.
Pros:
- Clear film helps hold shattered glass together after an impact.
- Blocks UV rays and may help reduce fading and seasonal heating or cooling costs.
- Peel-and-stick installation uses soapy water to help limit bubbles.
- Suitable for windows, sliding doors, bathrooms, offices, schools, and other public-facing spaces.
Cons:
- The 17.7-inch width and 8.2-foot length may require careful measuring or joining for larger windows.
- Installation requires removing the protective liner and carefully managing air bubbles.
- The listing does not provide a specific impact-test certification.
This is a practical budget choice when clear appearance, UV protection, and straightforward DIY installation matter most. Use plenty of soapy water and follow the included instructions for the cleanest result.
Best Tested Heavy-Duty Option – BDF S8MC 8 Mil Clear Film
Among window security films under 100, the BDF S8MC stands out for its thicker 8 mil construction and stated safety testing. It is designed for interior application, where its adhesive and polyester film can help hold shattered glass together and slow forced entry.
Best For: Buyers prioritizing a thicker, tested security film for tempered or non-tempered glass in homes and offices.
Pros:
- 8 mil clear film absorbs impact and helps minimize property damage.
- Passes ANSI Z97.1 Class B and C and CPSC Category 1 testing requirements, according to the listing.
- Provides 99% UV rejection to reduce sun-related fading of furnishings.
- Includes a squeegee, knife, and installation guide.
Cons:
- It is not intended for heat control.
- The 12-inch width may not cover wider panes without multiple strips.
- Installation is on the interior side of the window and may require careful alignment.
This is the strongest fit for shoppers who value documented safety performance and included installation tools over heat-management features. Its 12-by-14-foot roll provides more length than the smaller compact options here.
Best Complete Kit – 4Mil Clear Security Film
This 4 mil clear film is a convenient contender among window security films under 100, combining shatter protection, UV blocking, and a small DIY installation kit. Its transparent finish is intended to preserve natural light while reinforcing windows and other glass surfaces.
Best For: DIY users who want a clear, self-adhesive film with a spray bottle and scraper included.
Pros:
- Helps hold glass fragments in place if a window cracks or shatters.
- Blocks UV rays and helps reduce fading of curtains, furniture, and décor.
- Includes a spray bottle and scraper for installation.
- Suitable for windows, sliding doors, cabinets, bathrooms, schools, shops, and banks.
Cons:
- The 17.7-inch width may be limiting for broad panes.
- Bubble-free application still requires careful liner removal and plenty of soapy water.
- The listing does not state a formal impact-safety certification.
Choose this option when an included installation kit and versatile household or commercial use are more important than a certified heavy-duty specification. The 365-day quality guarantee and stated after-sales support add reassurance for first-time installers.
Best Overall Clear Film – NIDOJP 8 Mil Security Window Film
For shoppers comparing window security films under 100, the NIDOJP 8 Mil film offers a thicker clear PET layer designed to help hold broken glass together after impact. Its wet-apply, pressure-sensitive adhesive supports a DIY installation without extra glue.
Best For: Sliding doors, patio doors, sidelights, small windows, and glass partitions where a thicker clear film is preferred.
Pros:
- 8 mil thickness is available for a more substantial protective layer.
- Clear finish helps preserve the original appearance of the glass.
- Comes in multiple sizes and uses soapy water to help reduce bubbles during installation.
Cons:
- The film is not a replacement for tempered or security glass.
- Careful preparation is required; folding the film can cause installation problems.
- The listed size covers 17 inches by 6.5 feet, so measuring first is important.
Choose this option when thickness and broad size availability matter more than a completely effortless installation. Clean the glass thoroughly and use plenty of soapy water for the best DIY results.
Best for Broad Coverage – Clear 2 Mil Security Window Film
This 2 mil clear film is a practical pick among window security films under 100 when you need a longer roll for larger panes. It is designed to absorb impact and help hold shattered glass together while maintaining 96% visible light transmission.
Best For: Home and office windows, sliding doors, display cases, and projects that benefit from the included 10-foot length.
Pros:
- 96% VLT keeps the window highly transparent.
- 10-foot roll provides 14.75 square feet of stated coverage.
- Peel-and-stick PET film is applied with soapy water and can be trimmed to fit.
Cons:
- At 2 mil, it is thinner than the 8 mil option in this roundup.
- Installation requires careful liner removal and generous soapy-water application.
- Extra material may be needed to allow for trimming and installation errors.
This model makes sense for buyers prioritizing coverage and transparency. Plan the cuts before installation, and order enough film to leave a margin for fitting and trimming.
Best for Easy Removal – Clear 2 Mil Removable Security Film
If you are comparing window security films under 100 for a temporary or easily changeable setup, this clear 2 mil film emphasizes simpler removal. Its adhesive is described as easier to fix and remove without residue, while the film helps hold shattered glass together after impact.
Best For: Bathrooms, sliding doors, display cabinets, and homes with babies or pets where a removable clear layer is useful.
Pros:
- Clear PET film is designed to preserve visibility.
- Adhesive is described as removable without residue.
- An anti-scratch surface layer is intended to resist friction and fading.
Cons:
- The notes describe the adhesive as not especially strong.
- The 17.7-inch by 6.5-foot roll covers a smaller stated area than the 10-foot option.
- Installation can create permanent wrinkles if the film is folded.
This is a sensible choice when reversibility matters alongside basic shatter-retention benefits. Use two people for installation when possible, apply plenty of soapy water, and handle the film carefully.
How We Picked the Best Window Security Films Under 100
We focused on films priced below $100 and compared the specifications that matter most for real-world window protection. Our review criteria included thickness, roll dimensions, transparency, privacy features, adhesive application, UV or heat-control claims, and the amount of glass each roll can cover. We also considered whether the product description clearly explains its intended use and installation requirements.
Security film is not a substitute for laminated or impact-rated glass, and results depend heavily on careful cleaning, measuring, trimming, and installation. Products with greater thickness may provide more material strength, but larger rolls and simpler clear finishes can be more practical for covering multiple windows.
Quick Comparison
| Film type | Best suited for | Main consideration |
|---|---|---|
| 2-mil clear film | Small repairs and basic glass protection | Lightweight and generally easier to install, but less substantial |
| 4-mil clear film | General home and office safety | Balanced thickness, visibility, and coverage |
| 8-mil clear film | Users prioritizing added material thickness | May require more careful handling and installation |
| Mirror privacy film | Daytime privacy and glare reduction | Privacy effect changes with indoor and outdoor lighting |
Key Buying Factors for Window Security Films Under 100
Thickness and Intended Protection
Film thickness is commonly listed in mil or millimeter measurements, which are not interchangeable. A 4-mil film is approximately 0.004 inch thick, while a listing expressed as 0.05 mm uses a different unit. Check the exact specification rather than relying on a product title alone. Thicker film can offer more material for holding fragments together, but it does not make ordinary glass impact-proof.
Roll Dimensions and Coverage
Measure each pane before ordering and add extra material for trimming. A narrow roll may suit small panes, while longer rolls can reduce waste across several windows. Verify the stated width and length, especially when listings use feet, inches, or abbreviated measurements inconsistently.
Clear, Reflective, and Light-Control Finishes
Clear film preserves the existing appearance and is usually the most versatile choice. Mirror or silver film can provide daytime privacy and reduce glare, but it may look different at night when interior lighting is brighter than exterior light. Also check whether UV or heat-control claims fit your priorities.
Installation and Maintenance
Most adhesive films require thoroughly clean glass, soapy application solution, accurate cutting, and a squeegee to remove bubbles. Confirm whether the product is self-adhesive or requires a separate mounting adhesive. Follow the manufacturer’s curing and cleaning instructions, and avoid abrasive tools after installation.
Who Should Buy Which Window Security Films Under 100?
- Choose a 2-mil clear film for a low-cost, lightweight option for smaller panes, temporary protection, or basic fragment retention.
- Choose a 4-mil clear film if you want the best general-purpose balance for household or office windows.
- Choose an 8-mil clear film when added thickness is your priority and you are prepared to spend more time on careful installation.
- Choose mirror silver film if daytime privacy and glare reduction matter as much as safety, while remembering that privacy is not guaranteed after dark.
Before purchasing, confirm the roll will cover every intended pane, compare the actual thickness units, and treat security film as one part of a broader window-safety plan.