Vinylbilt is excited to introduce the Engineered Thermal Insulation known as "ETI" system. ETI system is one of the greatest improvement in the vinyl window industry for energy efficiency.


ETI system combines the performance of engineered insulating rigid foam with dead air space to deliver outstanding improvement on the thermal performance of the window. Tests have shown that Vinybilt's ETI system outperforms other systems with higher Energy Ratings as well as improved U Values and R values.


  • Improves overall window performance by up to 8% of the overall energy rating.
  • 2 points improvement in ER values when compared to non-foam filled windows (Lab report available)
  • Improves U Values
  • Improves R Values
  • Reduces heat and cold transfer through window sash and frame
  • Reduces window condensation
The ETI Difference
Address: LORMAC Renovation Centre 8374 Longwoods Road, London, Ontario, N6P 1L5 | Toll Free: 1-800-205-6219
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Lormac Inc., Home Improvements, London, ON