You must make sure building surfaces and fixtures are safe to be used before you begin the window-cleaning operation. This includes:
Wash. Admin. Code § 296-878-12005
Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. 02-22-027, § 296-878-12005, filed 10/28/02, effective 1/1/03.