In addition to the saddle you ll need the following sheet metal parts see figure a.
Roof framing around chimney.
If necessary frame in a cricket on the uproof side.
Framing the chimney chase.
Plan your truss layout on a sheet of graph paper noting the gable ends at either end of the roof and the location of.
Make a sketch locating the chimney within the perimeter.
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.
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 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.
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.
Amend your truss.
Measure the top of the trimmed box taking dimensions carefully.
How to frame chimney opening trusses 1.
Install step flashing and roof shingles as usual.
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How to frame around a brick chimney above the ceiling 1.
Order about 12 in.
Prebent step flashing 8 x 8 in.
More than the width of the chimney.
Roofers call these shingle tins.
Typically uses 2x4 structural members sheathed with osb or plywood exterior building sheathing.
Some lumberyards stock a dormer flashing.