Technical question re: complete darkness needed

White opaque not dark enough, so can I safely install silver 20, then black opaque on 44 x 82 units? Or will I have to do an exterior reflective film to do the black opaque on the interior?

Put it all on....... Maybe just paint the glass.......would be cheaper.

White opaque or White Frost ??? What you are saying makes no sense to me

If it's White opaque I would 'guess' you could put your blackout right over it seems how it's already up....

Are they dual pane windows? If so, why put two layers if you arent going to be able to give them any kind or warranty or guarantees anyway? Let them know exactly what risks they are taking. Put it on them to make the decision and live with whatever happens because of it.

I have the technology to make it for you by laminating white vinyl to black vinyl and it works perfect. We laminate 60" by any length you need. Used it on a college and they loved it. I can make it any color you want too!

I would use I layer. The vinyl is white on the adhesive side and semi matte black on the other side I use it all the time then no need to do 2 layers of film. It is made by mmm.comes 48” wide you will not have much waste.very low price you can buy it buy the yard to.

Try this again. There is nothing yet on the ig units. White, the safe film, lets in too much light. This is an inspection area for large drug company. Black opaque, with zero light transmission, is needed. I have all films in stock (white and black opaque, outside reflective weatherable, silver 20). Just need knowledgable info on which is safe. I know outside weatherable with interior black opaque is safe. Are any of the other options safe? I always avoid the outside weatherable, if possible.

What direction are they facing? Shadow line? Are you asking if you need to install your ex silver on the outside if you use your white out on the inside with your black out over your white out on the inside?

Spray the glass with bedliner........

if you know the outside is safe, just do that and avoid any possible issues in the future. seems pretty simple to me

i think he has his own film allready. then you tell him to spray the window with that stuff its to messy the roll on applacation would be less messy but it would be slower.

Black-out will break the glass even if you put it on the outside.

About the only thing you can do, silver outside and black inside and hope the heat absorption is not too much

Silver 20 on the outside should block more than enough to keep the blackout from getting too much heat, especially on a exterior install since it never even gets through the window. A good silver 20 should be ~75% tser

Definately DO NOT paint the glass..... I have a window at a customers building that a tenant painted black to hide the wall they built on the other side............the inside glass exploded and fell out in chunks!!!!! BAD ADVICE!!!!

No. gotta paint the front and back.....or bricks work well.......

Really? That's odd we install black out and lot's of other colors for years on the exterior and never have a problem with glass breakage! I still say call me and I'll make it and it's less tham MMM white black film.

I've just installed Black Out film on the interior of a 6mm Toughened Double Pane. It was checked out as OK with Bekaert before application.
Their consultants answer was if its toughened you can put anything on it. so I hope he's right

That should be good to go.... All of that input and I didn't see anyone ask the glass strength. That is the single most important factor in any film application when considering film options.