According to the International Residential Code, any portion of a masonry chimney located in the interior of the building or within the exterior wall of the building shall have a minimum airspace clearance to combustibles of 2 inches. This code is all about ensuring there are no flammable materials in your home’s walls or attic that would be in danger of being set on fire by a hot chimney. Furthermore, chimneys located entirely outside the exterior walls of the building shall have a minimum airspace clearance of 1 inch. When it comes to chimney clearances, your safety is paramount. If you think your chimney might not be up to code, or you have any additional questions, give us a call!