Roof Framing Around Chimney

Typically uses 2x4 structural members sheathed with osb or plywood exterior building sheathing.

Roof framing around chimney.

Revise your truss spacing for a chimney opening from 24 to 48 inches wide by flanking the chimney opening with. Install step flashing and roof shingles as usual. Measure mark cut and install your regular ceiling joists typically 2 by 6 lumber or larger above the doubled. Roofers call these shingle tins.

Readers of this article should also. You ll need one for. As carson dunlop associates at reviewers sketches above illustrate proper masonry construction leaves space between wood framing members and the chimney or where framing rests on or in a masonry chimney at least 12 of solid masonry should separate the chimney flue from the nearest wood framing member. How to frame chimney opening trusses 1.

Make a sketch locating the chimney within the perimeter. Framing the chimney chase. We are proposing that code allow the space to be filled with non combustible insulation. More than the width of the chimney.

How to frame around a brick chimney above the ceiling 1. The plan on the left shows a code compliant chimney through floor or roof framing with a 2 air space between the masonry chimney walls and the combustible framing. Install the siding and then cover the 1x2 furring at the top with a 1x3 or 1x4 piece of finish trim all around the box. Mark the subfloor as indicated on the blueprints for the fireplace if the chimney and fireplace await construction.

Some lumberyards stock a dormer flashing. Prebent step flashing 8 x 8 in. Amend your truss. 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.

Plan your truss layout on a sheet of graph paper noting the gable ends at either end of the roof and the location of. Order about 12 in. Measure the top of the trimmed box taking dimensions carefully.