Roof Framing Around Chimney

Framing the chimney chase.

Roof framing around chimney.

Chimney fire clearance distances between masonry wood framing. A brick chimney requires special treatment in seismic areas. I have a concrete block chimney in my basement with a clay liner. Framing around chimney 01 12 2006 02 54 pm.

Properly framed and constructed the portion of the chimney chase that extends above the roof surface at a height to meet the roof clearance distances will not require extra bracing. The existing upstairs walls are framed up against the brick afik and it has been that way since the house was built in the mid 70s also afik. Add infill framing to strengthen the roof between the trusses flanking the chimney. Typically uses 2x4 structural members sheathed with osb or plywood exterior building sheathing.

And the house hasn t burned down. Modern code makes it difficult to build chimneys with exposed masonry walls in contact with baseboards flooring and combustible ceilings. If the chimney only had only one or two flues and was built in a wood frame house the chimney walls were built 8 thick as they passed through the roof. This article describes the fire clearances required for masonry chimneys.

How to frame around a brick chimney above the ceiling. Nail 2 by 4 lumber between the top and bottom chords of the trusses flanking the bottom and top of the chimney.