Security Window Films Tutorial
In the March 2023 Nashville school shooting, the perpetrator entered by shooting the glass window raising questions about using security windows films but how well do they work and what is their limit?
The video below shows the glass windows of two double glass doors being shot by an AR-15-type rifle to enter the school building:
In this tutorial, we examine security window films including:
- Background
- What Are Window Security Films
- Polyester For Security Films
- Manufacturing Process
- Types Of Security Window Films
- Installation Techniques
- Higher Security With Tempered Glass
- Adhesive Keeps Shards From Falling Off
- Sun Exposure Affecting The Film
- Security Film Vs Bullet-Resistant Glass
- Security Film Mechanical Properties
- Comparing Security Films
**********
*** ********* ** ****** ***** ***** back ** *** *****, **** * patent *** *** ***** ****** ****, albeit *** * ****** ****** ****,*** ******* ** ****** ********* ****** *** ************* ******* (now ***** ** **).
***** *** ******** ******** ***** *** security ***** ****** **********, *******, *** majority ** **** ******** **** *** adoption ***** ** *** *****.
*** ****** ******** **** ********** ***** were ******** *** ******* ***** ** increased ******** ** ****** ***** *** energy ******* **** **** ********* *** window's ********. ** **** **** ***** countries ******* ******* *** ** *** Western *********,******* ** ****** ******, ***** ******** ********* *** ****** preservation. * ****** **** ********* ** a *********** ******* ****** **** ******** absorption ***************, ******* ** ****** *****, thus, ****** *********** **** *** ****** for *** ************.
** ******** ******** ** ****** ******** with ***** ***** ****** ******* ******** and *********** ** *** ******** *** led ** *** ******** ** ******** window *****.
*****, ******** ***** *** ******* ********* and ****** **** ** ******* ******** (from *********** ** **********). ********, ***** the **** ********* ******* ** *** A.P. ****** ******* ******** ** ******** City, *** ********** ******* ************* ******, **** ******** ******* ********* ** have **** **** ** ******** ****.
What *** ******** ****** *****
******** ****** ***** *** **** (********* no ******* **** *****, *.*., *.*** inch, *** *******) ********** ********* ***** that *** ******** ** ******** *** strength ** *** *****, ******* ******** if ***** ** *******, *** **** glass ********* **** ********** ** *** surface ** **********. ******* ***** ****** from ********** ****** *** **** ** particularly ********* ** ********* *********, **, per ****** ***** ******, **% ** *** ****** *** injury **** ********** *** ** ********** to ****** *** ******* *****.
***** ********** ***** *** **** ******* than ******-********* ***** *** *** *** designed ** ****** ******* **** * bullet, *******, **** *** *******, ***** or **** **** *****-*** *** ***** & *****. *** *******, * ***** below ***** ** ******** ****** ** his *****-** ******* ***** ******** * cement ***** **** *** ***** **** with ******** ***** *********:
*** ******** ***** *** ******** ** terms ** ************ ** *** *** retrofit ******** ******* ** ***** ***** and ***** * ********** ****. ********, some ** *** ******** ***** *** also ******** **** **** ****-******* *** anti-graffiti ********, *** ****** ***** *** heat ******* ***/** ******* (******* ******* of ******* *** **** ** ********** different *****).
Polyester *** ******** *****
********* ** *** ******* ******** *** security *****, *** ***** **** ** the **** ******** **** ** ***** used *** ********, ** ** *********** for *** **** ******** ** ******** films.
********* ** ********, ***** ***** **** ** ******** of **** ("*****" **** *****) ******* or ******* ** ******* ******** ****** or ***** ("*****" **** *****). ******** have * ****** ** ****** **********, such ** *** **** *** *********, according ********* **. **.:
**** ** *** ****** ********** ** various *********** ******** *** **** ******** or ******* ** ****** ****** (***** weight *** ************* ***** *** ******), toughness, **********, ********** ** *********, **** of ************ (**** *** **********), *****, transparency, **********, *** *** ****.
*** *** *** ***** ** ******** below:
************* *******
********* ***** *** ********* ********* ***** (such ** *** ******, *** *******) due ** *** *** **** **** are ************ ************ *** ********* ***********, * ********* ***** *** **** is ********* ** ***** *** ******* strands.
*** ************* ******* ****** **** ******* PTE (************ *************) ******, *** **** the ******* ** ****** ** ** extruded **** * ******* **** ** form *** **** *****.**** *** **** ** ********* **** two ********** - ******* ********* (**) and ********** ********** ********* (**) - using ***** ******** ** ********* ****** and ******* *** **** ** *** orthogonal *********.
**** *** **** ** ********* ** a ******* ****/********* *** **** ** stabilized **** **** *** ********* **** as ******** *** ****-******* ******** *** added.
**** ************* ******* ** ***** ** align ********* ******** ******* ***** **** increase *** ********* *** ***** *** film ** ********* *********** ******.
*** ********* ** ******* ******* ***** stress *** ** **** **** **** mundane *********, *** *******, ********, ** the ***** ***** *****:
***** ** ******** ****** ****
*** ******** **** *** ** ************** by *** *********, *** ****** ** layers, **** ******* ******** ** **** thereof, **** *****, *** ********** ******** (such ** ****-******* ** ****-********).
*** ********* ** *** **** ********* varies **** ~**** ** ~*****. *** rule ** ***** ** *** ******* the ****, *** ******** ** **, however, *** ******** ** ******* ***** is **** *** ****** ********* ************.
******** ***** *** **** **** ******** layers ** ********* ***** **** **** increase *** ********** ** *** ****. Generally, *** ****** ** ****** ********** with *** ********* ** *** ***** (the **** ******, *** ******* *** film **).
*** **** ******* ******** ** *** films *** *** ** *** ********** and ********** ** *** ***'* *************** emission ** ** ***********. *** ******** film ** **** **** ******* ******** it ** *** ********* ** ** heavily ******. *** *******, ***** *** "almost ***'* **** **** **'* *****", per * ** **************, ***** ***** ******** ******** **** *************** * **% ********* ** ** rays.
*** ************* ** *** **** ********* varies ********* ** *** ************ *** film *****, **** ***** ****************** **%-**% ** "***** ****** ********"*** ***** ***** (**% ********* **** corresponds ** * ******* ****** **** that ********* **** **% ** ******* light). ****** **** ****** *** ******* privacy ******** ********* **** ****** ****** rejection ****.
**** *************, **** ** **,***** ********,***, ***. ***** ***** **** ****-******* and/or ****-******** ********.
Thicker **** *********
*********, ******* ***** *** **** ******, however, ** ***** **** *** ********* - ********* ** **** *** ************.
*** ******* *** ****, *** **** cumbersome ** ** ** ******* (** the **** **** ******* **** ********* and ** ** **** ********* ** apply ** **** **** *** ******** is ******** ** *** ******), ***** can **** ** * **** ********* installation, ** ******** ******** **** ********* told ****. ***********, ******* ***** **** can ** **** ********* ** **********.
************, *** ******* *** ***** *** the **** ***** *** ***** **** be, ** ******** ********* **** ****, which ***** **** ** * **** aesthetically ******** ************.
8 *** **** ** **** ****** ****
** * *** ***** ******** **** was ***** ** **** ** *** most ****** ****, **** ********** *************, schools, *** ********** ******** **** ********* (or ******).
***** ** ** *** *** ****** thickness *** **** ****** ** ************ buildings, ** * ****** ************** **** IPVM. *********** *************, *******, ***** ****** films ***** * ***.
Choosing * ****
***** *** ***** ********* ***** ** choosing ** *********** **** *** * given ************, ********* (*) ******** *** the ******* **** ** *** ****, (2) ******* ** *********** **** ****** the ******* ******, *** (*) ******** out *** ************ ******.
*** ***** ***** *** ******* *** contribute ** *** ******* ******* ** the ******** ************. **** **** ** going ** ** ********* ** **** detail *****.
Choosing * **** *** * ******* ***********
**** ******** * ******** **** *** should **** * ***** ************* ** the **** **** **** *** ****** to ********** - *** ******* ********* against ****** ***** *** ****** **** significance ** ***** ********** - ** different ***** **** ** **** *** different ************.
*********, ************* ********* * **** ************ of ******** *****, *********:
- ****** *******
- ****** ***** *** ***** & **** (different ***** **** ******** *** **** application)
- ********* ******
- ***** **********
**** ** *** ************* **** ********* seismic *** *********** ********, *******, ** is **** ****** **** *** ***** four *****.
***** ************ ******* ********* **** *** thickness ** *** ****, **** ******* films ***** *** **** ********* (*.*., they *** ** **** **** *** blast ********** *** ****** *******). *******, considering *** ********* ** ******* ***** (in ************, **********, *** ****), ** some ***** ******* ***** *** ** overkill, ** * ******** ** ***** told ****.
*************, ** ***** **** ** ***** exists **** ***** ***** *** ****'* thickness ** *** ***********, ** ********* confirmed ** ****.
**** ** ***-***** ******* *** **** it ** ****** ** ** ************, the **** **** ** ******* * correct **** ** *** ****** ** films **** *** ******** *** * corresponding *********** (*.*., ********** ***** & grab).
Choosing * **** ****** *** ******
********** **** ******** **** ********* *** a ***** *********** ****** ** **** for **** **********, ******* ** *** film's ********** ********** **** *** ***** included ** *** ********* *** ****'* documentation, ** ******** ********* **** ****.
**** ***** **** ******** *******. *****, the ********** ********** ** ********* ***** designed *** *** **** *********** *** often **** ***** ** **** ***** or **** *** ****, ***** *** make ********** *********. ******, *** ***** of *** ****'* ********** ********** **** govern *** ******** (**** ** ******* strength *** ***** ********) **** *** guarantee **** * ***** **** **** be ********* ******* * ****** ** question.
********, ** ***** ********'* ********* ********** told **, ** ** ********* ** come ** **** * ******* **** of ***** *** ************ * ***** mechanical ******** ** *** ****, ** one *** ****** ***** * ********* mechanical ******** ** **********.
******** ********* *** *****, *******, ******** whether *** **** *** ** ********* against * ***** ******, *** ******** companies. ********, **** ********* **** ********* levels ** *******, **** *** **** differentiate *** *********** ** ********* *****. For *******, *** ******* ***** ***** different ****** *** *** ***** ********** testing:
******** ***** ******** *** ******** ****** authored ********* *** ****** *****, *************(**-*****),****(**-*****),***(******-*****),***(**-*****), ***.
How **** ******* ** ****
****** ********** ******* ** ******** ***** can ** **** ** ******* ****, for *******, * *** ************ * ************ ******* *** **** + ***** system **** ******* *******. ** **** standard, ** *** ***** ****, **** objects ****** ****** *** **** **** different ****** ****** (********* ** *** mass *** *** ***** ** ** object).
********* ****** **** * ******* ********* of ******* ** *** **** ********, however,* ******* ******* ** ******* ** used(*** *******, ** * ******* ***** of ********** * * ** *"**" wooden *** ** ******** ** * speed ** ***/*).
*** ***** ********** *******, ***** ***** with **********/********** *** *** ****, *** the*** **** ***********.
Security **** ************
***** *** ******** **** ** ********** a ******** **** - *** "********" method *** *** ********* "******" ******* - **** *****, **** ** ************, and *********** *********.
***** ******* *** ********* **** ******** to ** ************* "******* ***********" *** "with ***********", ************.
**** **** ********** ** *** ************ method ** ** ******* ****** ** rely ** ************* ** ******* *** film, ** ** ******** ********** *** lead ** *** ******* ******* *** film *** *** ***** ******* *** decrease *** ************* ** *** ****.
*** ******* ***** ***** * ********** between ******** *** ****** ************ *******:
Daylight ******
*** "********" ****** ** ********* *** least ********* ****** **** ** ******** for ******** ************. ** **** ******, the **** ** ******* ******** **** the *****' **** ******* *** ** not ******* **** *** *****. ***** providing ** ******** ** ******** **** method **** *** **** *** **** in *** ***** ** *** ******, which *** **** ** *** ****** glass + **** ****** ***** ****** out ** *** ***** ** * bomb *****, ** **** ***************:
** *** ***** ********* ****** *** strength ** *** ***** ******—********* ******* 1⁄2 *** * ***** *** ****** inch (***)—*** ****** ****** ***** ** glass ***** ** ****** **** ** sucked *** ** *** ****.
*******, * ******* ********* *** ****** even **** **** ******* ********* **** as *****-***. *** ******* ***** ***** the ***** ***** + **** ****** being ****** *** ** *** ***** after * ****** **** ** ***:
** *** ***** ***** *** ***** withstood *** ****** *** *** *** shatter ***** *** ****** (*** ** the ****), *** *** ***** ********* was ********** **** ** **** *** once *** ***** + **** *** punctured. ** ** ******* ** **** how ***** ********** **** *** *** shown ***** ******, *** *** ******** method ************* **** **** *****.
*********, *** **** ***** ********* ****** *** **** + ***** structure ***** ****** **** *** *****.
Anchor *******
****** ******* *** ********** ** ** more ******, ** ***** ******* ****** the **** ** *** ****** ** door *****, *******, **** ** * more ********** *** **** ********* ************. Multiple ******** ****** **** ********* ************* these ************* ** **** ****** ** IPVM, ******** ** *** ******** ******.
*** *********(* ** ******** ** ******** *****) comparison ***** ** ******** ***** **** and ******* ***********:
***** *** *** ***** ** ****** installations, * "***" *** *** * "Mechanical" ***. *** ***/*** ***** ****** employs * ******** ******** (********) **** is ******* ** *** ********* ** the ***** **** ** ******* ** both *** ***** ***** *** *** frame *****.
******* ** ******* ********, *** ********** method **** ****** ***/** ****** ****** to ****** *** **** ** *** frame.
*** ********** ********* ****** ** ************ is ******* **** ********* *** ****** greater ********** ******** *** ****** ******* the **** ** *** *****, ** multiple ********* **** ****. *** *** method ** ********* **** ****** ******* it ** ******* ** *** ******* of *** *** ******** ** ****** to *** ***** - *** *******, wooden ****** *** ***** *** ************* of *** *** ********* ******.
********, ********* *********** ** *** ******** adhesive *** **** ** "**** *****", where *** ******** ** **** ****** and ****** **** ** ***** ****** of *** ****.
******** ******* ************
***** **** ***** *** (*** ******** to) ** ******* ** *** ******** side, ********* ******** ***** *** ******* to *** ******** ****.
***** ******* ** *** ******** **** will ******* **** ********** ********* *** the ******/**** **** ** ******** **** without *** ****, *** *** ***** to **** **** ** *** **** a ***** **** *** ***** *** then ***** *** ***** ** *** inside * ********, ** ** **** IPVM. ** *** ***** ****, *** film ******** ** *** ******** **** won't ***** **** * **********.
********* ***** *** ** ******* ** both ***** *** ********* *** ******** film ** ******* ** ******* ********** or ******** (*.*., ***** **** ****-******** and ****-******* ********). **** ****-******** *** anti-scratch ***** *** ********** **** ** peel *** ** **** **** ** be *******, ** ** ***** ******** representative **** ****.
***** ******** ******** ***** ** **** sides ** **** *********, ** **** provide ******* ******** *** ** **** be ****** ** ***** **, ** was ***** ** ******* **** ******* *****.
Higher ******** **** ******** *****
***** ******** **** ** ******** ** the **** ** ***** ** *** be ******** **, ****** ******** *** durability **** ** ******** **** ******** glass *** *** ******** *****. *******, this ** *** * ************** ** some ****** **** ******* *** **** and ******** *****, *** ****** * representation ** *** ****** ********** ** tempered *****.
*** ** *********** ** ************* ********* (tempered ***** ** **** ******* ****** than ********), ******** ***** ** **** durable **** *** ***********. ********, **** breaking, ** ****** **** ***** *** rounded ****** ****** **** ***** **** (as ******* **** ******** *****). *** drawback ** ******** ***** ** *** higher ****.
Higher ******** **** **** **** *******
******** ****** **** ******* ** * dual **** ****** ** ***** **** will ** **** ****** **** * single **** ****** **** *** ****, as ******** ********* **** ****.
********* ** *** ***** ****, **** stems **** **** **** ***** ***** generally ******** **** *** ****** **** alternative.
Adhesive ***** ****** **** ******* ***
** ******** ************** ** ******** **** capabilities, *** *** *** **** *** glass ****** ***** * ******* ****** of ***/****** ******* ** ***** **** of ******** ******, *** *** ****** do *** **** ***. ** ******** companies **** ****, **** ** *** to * ****** ******** ** *** security **** **** ***** *** ***** in *** *****.
*** ******* ** *** ****** *** film's ******** **, *** **** ******** is ****. **** ******** (******** ** lbs/inch) ** ***** ********* ** * property ** *** **** *** ********* ranges **** * ** * ***/****. Lower **** ******** ***** **** ***** shards **** **** *** ** ******* more ****** ** *** ***** ** broken.
*** *********,** ************* *** ******* **** **** (*** "Noncritical ************") *** * ~*.****/**** **** strength (***** *********** **** */****), *** its ****** *** ******* ***** **** peel ********* ******* **** ~*.* ** 3.6 ***/****.
*** ******** ********* *** ****
***** **-** ***** ** *** ********, the **** *** **** **** ** its **********, ********* ** * **** strong **** **** **** ***** **** faster, ** * ** ************** **** IPVM.
*** **** ********* **** ** *********** by * ********* ** ******** *** will ***** ******* ** ****. *** change ** ****** ******** **** ******** the ********* ** ***** *** *** film, ** *** ******* **** **.
Security ***** *** *** ***********
************* ** ******** ***** *** **** to * ***** ********** **** ******** films *** ***********, ***** ** ****, they *** ***.
***** **** ******-********* ***** *** ******** film *** ******** ******* *** ********** break-ins *** *****&****, **** *********** ***** will ******* ******* **** ******** *** window ** * ***** ****. *** graphic ***** ***** ** ******* **** a********** ******* ***** ***** ******* **** **** placed ****** *********** ***** *** ***** with ******** ****:
*********, ** * ********* **** ***** below, *** *** *** **** ******* penetrated *** ****, *******, *** *****+**** structure ****** ** *** ***** *** required **** ****** ***/** ***** ** create * *** ****** **** ** enter *** ********.
Security ***** ** ******* ** ********* ****** ********
* ******** **** ********* ** *** glass ***** ** *** ********* ****** could **** ******* ********** ***/** ***** more **** ** ******** *** ******** to **** *** **** *** ***********.
***** ******** ***** *** ** ********** by * ******, ** *** **** multiple *******, * *** ** ******, and ***** ** ****** * *** enough **** ** *** **** ** enter *** ********. *** ***** ** gunfire **** ** ******** **** ***** alert *** ******** ** ******** ** call *** ****** *** **** ***** protective ******** *******.
******** ******** **** **************, *** *******, one ** ****** ***** *****, *********** the ******** ** *** **** ***** it *** **** *****:
*** **** **** ** ***** ** break *** **** + ***** ***** piercing ** **** ******* ******* ** the **** (*** *********, ******** ********* compliance, ************, ***.). *** ***** ***** shows * ** *** ******** ****, which ** ****** ** *** ******* end ** *** ********, ** ********* films *** ** ** ** **** thick.
*****
*** ***** *** ******** **** ****** depending ** *** ************, *********, **** level, ****** *******, ***., *** **** can ** ****** ******** **** $*/**** to $** **/**. *** ******** ** films, *******, *** ****** ** **** than $**/****.
Manufacturers
************* ** ******** ***** ******* (** alphabetical *****):
- **
- ***** ********
- ******* ****** *****
- ******(**** *********)
- ******
- ***** ****(**** *******-******)
- ***** ********** ***.
IPVM ***** ********
**** ***** ** ****** *** ******** in ******** ***** **** **** ***** scheduled *** **** ****.
*** ******** ******* ****** ** ********* in ** *******. ****, ** ***** a *** ** ************, *** ** what? *** ***** **** ******* ****** it * *** ***** *** ****** window ***** ***. *** ***** ***** is ** **** ****** *** *** to ***** ******* ** **** ** possible ****** **** *** *** **.
* ****** **** ** **** ** let **** ***** **** ***** **** are ********* *** ** **** ***** make ** **, **** **** *) be **** ****** ** **** **** and *) *** ****** **** ** that **** ******.
* ***** *******, *** * ******* you **** ******** *** ***** ** polymer ********* ** **** ************ *****.
**** **** *** ***** *** **** informative *** ****** **** ***** ****** in **** ****. ********* ****** ***** be **** *********, ** ******* ********** and ** ******** ******* ***** ** give ****** **** ** ***. ** you ********* ***** ***, **** **** situation *********** ******** ***** **** **** penetrated ** ******* **** ****** * significant ********** ** ******** ** ********.
**** **** ******, **** ******** ****** on * ********** ************* / ********** security ************** ****!
***********, ***** **** ** **********, * agree **** ****. * **** **** numerous ******** ** ****** **** ************ after *** **** ***** **** * recent ******** ***** ** ********* ******* client ********* * ******** ******** *************** installed ** * ****** ** * major **** ** * **** ***** warehouse ***********. * ********** ********* ***-******** rated ****** ******* ** ***** ***** glass ***** ******* *** ***** **********. At ***** *** ****** ***** ** will ** **** ***** *********.
**'** ************ *********** ** ** * multitude ** ************ ********* ****** ***** office ************ ** ******** ***** & grabs, ********* ***** ****** / *****, residences, *** ** ****** ********* ******** and ********* ***** ** **** * few.
** ** ***** *****, *** **** successfully ****** *** *********, ********* *** are ****** ****** **** *** ********** authorities ** ******. *************, *** ******* today ** *** ****** ******** ***** are ********** ** ****** ********* *** continuously ********* ** ******** *****.
****** ***** ******.
****** *** ******* **** ********. **** informative!