Roof Framing Around Chimney

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Roof framing around chimney. If necessary frame in a cricket on the uproof side. Typically uses 2x4 structural members sheathed with osb or plywood exterior building sheathing. 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. How to frame chimney opening trusses 1.

We are proposing that code allow the space to be filled with non combustible insulation. 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. How to frame around a brick chimney above the ceiling 1. Some lumberyards stock a dormer flashing.

Roofers call these shingle tins. You ll need one for. Make a sketch locating the chimney within the perimeter. 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.

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. Readers of this article should also. Amend your truss. Framing the chimney chase.

In addition to the saddle you ll need the following sheet metal parts see figure a. Mark the subfloor as indicated on the blueprints for the fireplace if the chimney and fireplace await construction. Prebent step flashing 8 x 8 in. 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. Order about 12 in. Measure the top of the trimmed box taking dimensions carefully.