Challenge One of our clients, an industry leading chemical company, commissioned us to analyze and demonstrate that their architectural solar control films are carbon negative and can reduce global greenhouse gas emissions. Their products are sold in over 90 countries, which represented a significant challenge given the different environmental and solar conditions the products are exposed to.

Solutions Altanova developed an Environmental Product Declaration that determines the environmental performance of a set of 14 solar control window films they produce. The EPD was prepared according to the International EPD System and based on the declared unit of 1 m2 of installed film.


Types of Product

Exposure Factors


Where To Begin

Life Cycle Stages

The life cycle analysis performed for this EPD includes upstream, core, and downstream stages as illustrated. It permits a “cradle-to-gate with options” EPD, comprising the entire life cycle from raw material acquisition and transportation, window film production, transportation to customer, use, to final disposal and recycling scenarios. The use of the film is conservatively estimated for a period of 15 years for interior films and 7.5 years for exterior (OSW) films.

Major Assumptions

The “use stage operational energy” amounts can be used to compare the environmental benefit of installing a declared unit of window film in a given region to the negative environmental impacts resulting from the rest of its life cycle (the “embodied” impact). The difference between the embodied environmental impact and the use stage operational energy environmental impact is the net environmental impact.