GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Effect of window film on low-E windows?

oldbungalow | Posted in Green Products and Materials on

Hi, I’ve noticed with some new Low-E3 (Cardinal 366) windows that have  plastic wrap / protective film intact on inside and outside surfaces that the interior side of the windows in full sun gets pretty warm, measured about 98 degrees or so. Temp drops when the protective film is removed.

Wondering what the science behind this is, does the exterior or interior plastic interfere with the emissivity/reflectivity of the Low-E3 coating?

If we add impact or fragment retention film later, would this also affect the Low-E3 coating? If so which would be the better side to apply the impact film, outside or inside surface?

PS we do not have the i89/room-side coating.

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.


Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |