Here are the requirements for sheathing thickness and nailing (plus patterns) for wall and roof sheathing. Required thickness of wall sheathing 40 cm (16") OC 60 cm (24") OC Fibreboard (insulated) 9.5 mm (3/8") 11.1 mm (7/16") Gypsum sheathing 9.5 mm (3/8") 12.7 (1/2") Lumber…
The National Building Code sometimes requires the exterior walls of some buildings built near a property line to be constructed differently, and the closer to a property line a building is, the more restrictive the requirement. In Code, this is called “spatial separation.” The intent…
Of late, our office has been dealing with a number of situations where people have begun construction of some major work without a required building permit. We cannot stress this enough: don't. We have dealt with several instances where builders/property owners have begun work without…
Over the last few months, our building inspectors have encountered serious challenges with clients deviating from approved plans without contacting us first. Even minor changes can lead to problems down the road: changing a 6’-wide window to a 7’ window may require a lintel (header)…
The exit requirements for correct construction of exits from second-storey residential suites (duplexes, apartments, hotels) can be particularly complicated. It’s important a property owner or builder understand the requirements before work is undertaken, be it new work, or a repair of an existing assembly. It's…