Fastening of Wood Furring
(1) Furring shall be fastened to the framing or to wood blocks with not less than 51 mm nails.
Article 18.104.22.168. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.
Note : The term furring is used to describe the use of wooden strips or beams to create a true plane on which to attach or strap flat surface materials.