Install step flashing and roof shingles as usual.
Roof framing around chimney.
You ll need one for.
Amend your truss.
Measure mark cut and install your regular ceiling joists typically 2 by 6 lumber or larger above the doubled.
In addition to the saddle you ll need the following sheet metal parts see figure a.
Measure the top of the trimmed box taking dimensions carefully.
Plan your truss layout on a sheet of graph paper noting the gable ends at either end of the roof and the location of.
Mark the subfloor as indicated on the blueprints for the fireplace if the chimney and fireplace await construction.
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.
Framing the chimney chase.
How to frame around a brick chimney above the ceiling 1.
If necessary frame in a cricket on the uproof side.
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.
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.
Order about 12 in.
How to frame chimney opening trusses 1.
Typically uses 2x4 structural members sheathed with osb or plywood exterior building sheathing.
Some lumberyards stock a dormer flashing.
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.
Revise your truss spacing for a chimney opening from 24 to 48 inches wide by flanking the chimney opening with.
More than the width of the chimney.
Make a sketch locating the chimney within the perimeter.
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