Flashing a Framed Chimney w/a Cricket
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A metal cap keeps water out of vulnerable framing connections
Chimneys in roofs are like wall sections that trap water and inject it into the framing. In order to direct water out of the connection, make a cricket to slope away. The height depends on roof pitch, but at least a foot is probably needed.
Step by step:
Frame the little roof with 2x4s and sheath it.
Below the chimney, use peel and stick to flash the roof to wall joints, making sure to overlap upper pieces over lower pieces.
Cover the cricket with peel and stick membrane, too.
Now the roofing underlayment of felt paper can be installed.
Fold the underlayment up the chimney wall, higher than the step flashing will be.
And continue with the underlayment.
As you work your way up the roof, cut the shingle course around the lower edge of the chimney.
Lay a bead of roofing sealant on the shingle along the front edge of the chimney, and another little bead at the lower corner, where two flashings will overlap.
Bed the base flashing into the big bead and Overlap the lower piece of step flashing.
Shingle over the step flashing and continue to weave the step flashing and shingles to the upper edge of the chimney.
The top piece of step flashing folds around the chimney. You can cover the cricket with shingles if you want to, but a really nice way to go is 20 gauge metal cricket cover.
The cut corners are covered with patches soldered into place.
If you go that route, install the cricket cover and get back to work.
The lower edge overlaps the shingle and wraps the corner.
Continue shingling up the cricket valley and over the top.
House wrap can then be installed over the step flashing and siding is installed over that.
Now, the rain will run down the roof, and around the cricket. All of this should keep unwanted water out of your chimney so that there’s no surprises.
—This cricket flashing detail comes from the detail pack of Matt Jackson, The Timber Tailor, a remodeler, master carpenter, and YouTuber in Rapid City South Dakota
Twitter: @TradeCraftsman | twitter.com/tradecraftsman
Pinterest: @ProTradeCraft | pinterest.com/ProTradeCraft/
Facebook: https://www.facebook.com/protradecraft
Subscribe to Pro Trade Craft's YouTube channel for regular updates
Видео Flashing a Framed Chimney w/a Cricket канала ProTradeCraft
A metal cap keeps water out of vulnerable framing connections
Chimneys in roofs are like wall sections that trap water and inject it into the framing. In order to direct water out of the connection, make a cricket to slope away. The height depends on roof pitch, but at least a foot is probably needed.
Step by step:
Frame the little roof with 2x4s and sheath it.
Below the chimney, use peel and stick to flash the roof to wall joints, making sure to overlap upper pieces over lower pieces.
Cover the cricket with peel and stick membrane, too.
Now the roofing underlayment of felt paper can be installed.
Fold the underlayment up the chimney wall, higher than the step flashing will be.
And continue with the underlayment.
As you work your way up the roof, cut the shingle course around the lower edge of the chimney.
Lay a bead of roofing sealant on the shingle along the front edge of the chimney, and another little bead at the lower corner, where two flashings will overlap.
Bed the base flashing into the big bead and Overlap the lower piece of step flashing.
Shingle over the step flashing and continue to weave the step flashing and shingles to the upper edge of the chimney.
The top piece of step flashing folds around the chimney. You can cover the cricket with shingles if you want to, but a really nice way to go is 20 gauge metal cricket cover.
The cut corners are covered with patches soldered into place.
If you go that route, install the cricket cover and get back to work.
The lower edge overlaps the shingle and wraps the corner.
Continue shingling up the cricket valley and over the top.
House wrap can then be installed over the step flashing and siding is installed over that.
Now, the rain will run down the roof, and around the cricket. All of this should keep unwanted water out of your chimney so that there’s no surprises.
—This cricket flashing detail comes from the detail pack of Matt Jackson, The Timber Tailor, a remodeler, master carpenter, and YouTuber in Rapid City South Dakota
Twitter: @TradeCraftsman | twitter.com/tradecraftsman
Pinterest: @ProTradeCraft | pinterest.com/ProTradeCraft/
Facebook: https://www.facebook.com/protradecraft
Subscribe to Pro Trade Craft's YouTube channel for regular updates
Видео Flashing a Framed Chimney w/a Cricket канала ProTradeCraft
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