The Ontario Building Code | Material Standards for Glass
188.8.131.52. Material Standards for glass
(1) glass shall conform to,
(a) CAN/cgsb-12.1-M, "Tempered or Laminated Safety glass,"
(b) CAN/cgsb-12.2-M, "Flat, Clear Sheet glass",
(c) CAN/cgsb-12.3-M, "Flat, Clear Float glass",
(d) CAN/cgsb-12.4-M, "Heat-Absorbing glass,"
(e) CAN/cgsb-12.8, "insulating Glass Units",
(f) CAN/cgsb-12.10-M, "glass, light and Heat Reflecting",
(g) CAN/cgsb-12.11-M, "wireref ="http://thehandyforce.com/electrical/" title ="Electricians in East York">wired Safety glass", or
(h) ASTM E2190, "insulating Glass Unit Performance and Evaluation".
(2) Mirrored glass doors are permitted to be used only at the entrance to clothes closets and shall conform to the requirements of CAN/cgsb-82.6-M, "doors, Mirrored glass, Sliding or Folding, Wardrobe".
(3) Mirrored glass doors reinforced with a film backing shall meet the impact resistance requirements specified in CAN/cgsb-12.5-M, "Mirrors, Silvered".