Harry Rahman
XPEL Inc. | Director Architectural Films
Speaker
Track F: Building Performance
Session F4: Building Envelopes and Systems
September 19, 2025 | 9:30 am - 10:00 am
Addressing the "Elephant" in the Building Envelope
Windows are the weakest part of the building envelope from a heat gain, heat loss, and safety/security perspective, yet they are neglected because of high capital investment and long paybacks.
Per the NFRC, Inefficient windows can cost the U.S. $50 billion annually in energy waste.
Some of the ways to address inefficient windows are replacing them with high performance ones, using PV, using some sort of shading device or applying an all-season window film. Each has its pros and cons.
Window film technologies are now able to keep heat where it belongs, outside in the summer and inside in the winter. All Season Intelligence 65 can lower the solar heat gain in the summer, of an existing double pane window, up to 60% while increasing wintertime insulation by over 32%. Adding window film technologies to existing windows provides a sustainable and cost-effective solution to reducing the energy bills in a building. On single pane, the numbers are more impressive, lowering shgc by up to 75% and increasing wintertime insulation by up to 45%.
There are several measurement and verification tools including energy modeling.
The portfolio also addresses safety/security, anti-graffiti, bird strike, decoration and upgrading the exterior look of the windows.
Speaker Bio
Harry Rahman is the Global Director of Architectural Films for XPEL Inc. He has over 25 years’ experience in the film industry in technology, business development, marketing, and sales.
A former vice-president of the International Window Film Association, Harry holds a bachelor’s degree in marketing from the University of Houston. He is frequently requested as a speaker on the broad topics of energy efficiency, green business practices, and ROI reporting.
During his career, Harry has worked closely with architects/energy engineers/ESCO’s all over the world. His understanding of these topics has made him a valuable resource on the product type as well and relationship side. developed and implemented business development plans for the Americas, Europe, and Asia. Under his leadership, and within 18 months of launch, while the company was on a great growth curve, it was acquired by one of the leading brands in the window film industry, XPEL Inc.
Additionally, Harry has consulted with commercial clients throughout the U.S, Mexico and South America, on retrofit product selection, and conducted DOE II EQUEST modeling for clients. Some of the clients he has worked with are Royal Caribbean Cruise Lines, Princeton University, the State of Texas, and Marriott.
In his spare time, Harry enjoys spending time with his extended and immediate family. He is married with 2 kids, and he and his wife reside in Cypress, Texas.
His personal credo is “Tell me, I forget. Show me, I remember. Involve me, I understand.” Ancient Chinese Proverb