Window tinting movies are measured in seen light transmission ranges (or VLT). Because of this once we talk about a selected movie, be it for becoming to a car or some other utility, we usually check with it with it is VLT worth. VLT is measured in share ( % ), so in case you hear a couple of tint product being known as a share, it’s the VLT that defines that share worth Frosted film for windows.
For instance, a tinting movie known as Charcoal 5% is a charcoal colored tint with a VLT of 5% and likewise a movie known as inexperienced 50% is a inexperienced colored tint movie with a VLT of fifty%. However what does the number really imply?
Effectively, in easy phrases the VLT worth is the proportion of seen light that can be allowed to travel by the window tinting movie from the outside face facet of the movie to the inside facet. Because of this a 5% movie will solely enable 5% light travel by and a 70% movie will enable 70% light to travel. In impact, which means that decrease VLT movies will seem darker. As an illustration, it’s usually 5% tints that we’ll see on limousines for privateness.
So, becoming a 5% tint to a window will enable 5% light to travel by the glass from outdoors to inside, proper? NO! As a result of we have to consider the precise VLT of the window earlier than the tint is even put in. There isn’t a such factor as a chunk of glass, irrespective of how clear it seems, with a VLT of 100%. It is because glass naturally filters out a little bit little bit of seen light.
Lets take a look at car window tinting as that is one space the place we communicate of VLT usually as a result of the truth that many nations have legal guidelines in place limiting how darkish car home windows needs to be tinted. Most trendy cars come from manufacturing facility with home windows studying a VLT someplace between 72% and 78%, relying on producer, model and nation. Say, our instance car’s home windows learn at 72% and we add a 50% window tinting movie, what’s the new and last VLT of our car’s home windows after set up?
The sum could be very easy: V1 x V2 = V3 (The place V1 is the unique VLT of the glass earlier than tinting, V2 is the VLT of the window tinting movie and V3 is the ultimate VLT worth of the glass with tint movie utilized).
Our car’s home windows unique VLT = 72% and the tint = 50 %, thus V1 = 72 and V2 = 50
The sum is 72 x 0.50 giving us 36, which we’ll specific as a share. So a window with an unique VLT of 72% will then have a VLT of 36% after utility of a 50% movie.