Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals.
Vent pipe shingle roof.
The idea of roof vents existed for hundreds of years with natural vents employed in chinese buildings during the tang dynasty natural ventilation ducts in the buddhist monks caves and wind catchers incorporated in arabian architecture.
Continue the next row of shingles cutting a hole for the vent pipe.
Figure 2 cut shingle to fit over.
Here is how you do it.
Installing a roof plumbing vent is typically an easier task than flashing a chimney.
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Use some asphalt roof cement under the cut shingle and around the vent pipe as shown in figure 2.
Roofing flashings vent pipe flashing.
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Apply the last row of shingles that is just below the vent pipe as shown in figure 1.
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Figure 1 install shingles just below vent pipe.
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Momentarily lift the boot and apply sealant to hold the flashing in.
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