Dear candyoff,
Basically,tinting film for vehicles or house usage is almost the same.The main purpose for car tinting is to filter off the UV ray and also heat reduction..On top of that,nowadays...car tinting is also used as a car exterior fashion thing..
Tinting for homes are more for heat ruduction and also to prevent outsiders to view inside....for homes,no matter wat tinting film u r using,the interior of ur house is easily seen in the night....
*the difference is because normal house windows are just normal single layer glass,where else vehicles has reflective glass.....
so there are a few options for ur home dear candyoff, either to tint it with those mirror based tinting that only works in day..and them shut the window with blinds at night...or if u dun want to look outside at the same time dun wan outsiders to see u...u may use stickers...similar to tinting but its not clear...u can have tempered glass effect or either totally sealed effect...
for cars...usually we chose those 50%~70% because it is still visible....
all txt above are just my 2cents...
me noob noob nia..