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Old 09-17-2013, 08:07 AM   #1
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siding air gap


When you have siding that requires an air space/drainage plane you do that by using furring strips, correct? When you do that your obviously increasing the wall depth so does a piece of flashing need to be installed against the wall first so that any water that might get behind can drain and also it would cover up the underside of the sheathing and furring strips?
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Old 09-17-2013, 09:19 AM   #2
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Old 09-17-2013, 11:26 AM   #3
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If you have trim around a window or door do they get installed over the furring strips as well?
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Old 09-17-2013, 02:09 PM   #4
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fur out the window also then install new trim on top of that so your trim will protrude far enough out from the wall in order to have a proper edge to caulk to

regarding the window flashing.. install your furring strips at the bottom and sides of the window but before you install more vertical furring the window needs to be flashed now so its lapped under the house wrap,

ive seen siders install the flashing directly on top of the furring which does absolutley nothing to water proof the top of the window.. water will run down behind it
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Old 09-17-2013, 05:19 PM   #5
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fur out the window also then install new trim on top of that so your trim will protrude far enough out from the wall in order to have a proper edge to caulk to

regarding the window flashing.. install your furring strips at the bottom and sides of the window but before you install more vertical furring the window needs to be flashed now so its lapped under the house wrap,

ive seen siders install the flashing directly on top of the furring which does absolutley nothing to water proof the top of the window.. water will run down behind it
fur out the window or the window trim?
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Old 09-17-2013, 05:53 PM   #6
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fur out the window also then install new trim on top of that so your trim will protrude far enough out from the wall in order to have a proper edge to caulk to

regarding the window flashing.. install your furring strips at the bottom and sides of the window but before you install more vertical furring the window needs to be flashed now so its lapped under the house wrap,

ive seen siders install the flashing directly on top of the furring which does absolutley nothing to water proof the top of the window.. water will run down behind it
Also what about flashing under the furring and sheathing? Otherwise it would be exposed at the very bottom.
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Old 09-17-2013, 08:58 PM   #7
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install furring strips around the window so you can install trim on top of hte furring.. flashing the window first so the cap flashing is tucked under the house wrap.. then for overkil flash the trim as well..


depending on if your installing new windows or simply installing new siding around exisitn windows changes the prep
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Old 09-18-2013, 07:11 AM   #8
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What about flashing under the furring and sheathing at the bottoms of the walls? Otherwise it would be exposed at the very bottom.
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Old 09-18-2013, 07:35 AM   #9
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you dont need flashing at teh bottom of the walls. simply hang teh siding down 1" or so
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Old 09-18-2013, 07:41 AM   #10
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you dont need flashing at teh bottom of the walls. simply hang teh siding down 1" or so
But then the sheathing, etc would be exposed then
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Old 09-18-2013, 07:53 AM   #11
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install furring strips around the window so you can install trim on top of hte furring.. flashing the window first so the cap flashing is tucked under the house wrap.. then for overkil flash the trim as well..


depending on if your installing new windows or simply installing new siding around exisitn windows changes the prep
do you put the furring strips over or near the nailing flange so you can put the trim over it?
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Old 09-18-2013, 11:41 AM   #12
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http://www.google.com/url?sa=t&rct=j...Br40fQ&cad=rja

http://www.buildingscience.com/docum...shing+end+dams

http://www.joneakes.com/jons-fixit-database/2062

Gary
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