NORTHGUARDWINDOW FILM(437) 217-3456 ↗Block heavy glare and keep broken glass from scattering
The darker silver shade, made for rooms that fight strong sun.
NorthGuard installs Madico Silver safety film in the darker shade and thinner build, a dark reflective film that holds broken glass together. Windows in Toronto and the GTA with intense sun where privacy matters suit the film, though rooms get noticeably darker.
On-site check and written quote · Mobile service across Toronto and the GTA
- Break strength
- 100 pounds per inch of width
- Visible light transmitted
- 18%
- Ultraviolet rejected
- 99% or more
Madico's published typical values, measured on single-pane 6 mm clear glass. Full specifications and sources
The broken-glass risk Silver 20 4mil is built for
Madico Silver 20 4mil is for glass where a broken pane would be a hazard or an easy way in. South and west glass can turn a room into a glare box, and a broken pane scatters across the floor. People in those rooms often keep the blinds shut all day.
How Silver 20 4mil is built and what it does
Silver 20 4mil is the darker silver shade in the thinner safety build. It cuts glare by 80%, rejects 95% of infrared and holds the solar heat gain coefficient to 0.24 on single-pane clear glass. Break strength is listed at 100 pounds per inch of width, and Madico describes the Silver line as holding broken glass together.
Where Silver 20 4mil fits best
NorthGuard suggests Madico Silver 20 4mil for jobs like these.
- Rooms full of screens and sun-facing glass, where the blinds are always down.
- Ground-floor offices that want daytime privacy, since 55% of visible light bounces back outside.
- Spaces where an 80% glare cut matters more than keeping the room bright.
- Sites that want a hold-together layer in the 4 mil build with the darker Silver 20 look.
What Silver 20 4mil will not do
Madico Silver 20 4mil has limits that NorthGuard states before any quote.
- At 18% visible light, rooms get noticeably darker, especially on overcast days.
- After dark with lights on inside, the mirror effect reverses and people outside can see in.
- Madico lists break strength only, with no puncture or tear figures, and the film does not stop a pane from breaking.
Get a Silver 20 4mil quote from NorthGuard
NorthGuard checks your glass on site, confirms that Silver 20 4mil suits it and sends a written quote.
Silver 20 4mil specifications from Madico
Madico publishes these values for Madico Silver 20 4mil, part RS 20 PS SR 4MIL.
| Property | Madico value | Source |
|---|---|---|
| Visible light transmitted | 18% | 1 |
| Visible light reflected, exterior | 55% | 1 |
| Visible light reflected, interior | 57% | 1 |
| Glare reduction | 80% | 1 |
| Total solar energy rejected | 76% | 1 |
| Solar energy transmitted | 12% | 1 |
| Shading coefficient | 0.27 | 1 |
| Solar heat gain coefficient | 0.24 | 1 |
| Ultraviolet rejected | 99% or more | 1 |
| Infrared rejection | 95% | 1 |
| U-factor | 0.90 | 1 |
| Break strength | 100 pounds per inch of width | 2 |
| Tensile strength | 25,000 PSI average, machine and transverse direction | 2 |
| Peel strength | 5 to 6 pounds per inch | 2 |
| Adhesive | Acrylic pressure sensitive | 2 |
- Madico PDF: Safety security film performance measurements
- Madico page: Reflective silver
- Madico PDF: Safety and security brochure
Optical values are Madico's published typical values, measured on single-pane 6 mm clear glass, so results on your own glass can differ.
Silver 20 4mil questions and answers
NorthGuard answers these questions about Madico Silver 20 4mil with Madico's published data.
How dark is Madico Silver 20 4mil?
Madico Silver 20 4mil lets 18% of visible light through and reflects 55% outward on single-pane clear glass. That makes it the darker of the two Silver shades. Expect a clear drop in room brightness, with glare cut by 80%.
Does Silver 20 4mil give privacy?
Silver 20 4mil gives daytime privacy because it reflects 55% of visible light outward while only 18% passes in. Looking in from a bright street is hard when the room is dimmer than the outdoors. At night with the lights on, that privacy reverses.
What does Silver 20 4mil do about heat?
Silver 20 4mil rejects 76% of total solar energy and 95% of infrared, with a solar heat gain coefficient of 0.24, all measured on single-pane clear glass. Madico says they are typical readings, not a specification for every window.
Is Silver 20 4mil strong enough to hold broken glass?
Madico designs the Silver safety films to hold broken glass together and lists 100 pounds per inch of width for break strength on the 4 mil build. That reduces flying shards. It does not stop the glass from breaking.
Madico Silver 20 4mil for Toronto glass that needs backing
NorthGuard installs Madico Silver 20 4mil on Toronto storefronts, offices and ground-floor glass where a broken pane is the worry. NorthGuard looks at the glass type, frame and edges first, because film choice depends on how the glass is held.
NorthGuard comes to you in Bloor West Village, The Junction, Greektown and Kensington Market: neighbourhoods known for main-street shopfronts with street-level glass. Mobile service covers the rest of Toronto and the GTA, with no showroom.
Madico Nova 70, our premium option
Madico Nova 70 is our premium option for sun and heat, a different job from Silver 20 4mil: Madico lists Nova 70 at 68% visible light transmitted, with 46% of total solar energy rejected.
The Nova promotion (ends December 31, 2026): 30% off supplied and installed, from 50 sq ft of glass.
See Nova 70, our premium optionMore Silver reflective solar and clear films from NorthGuard
NorthGuard also installs the other films in this Madico range, and each one has its own page.
All Madico films NorthGuard installsSafety window film in Toronto
Madico is a trademark of Madico, Inc. Warranty details on request. NorthGuard buys Madico film as a customer and is not a Madico dealer.