That is to say the roof pitch expressed as a ratio tells you how many inches the roof rises for every 12 inches of depth.
How to start a pitched roof.
Snap horizontal chalklines to help you keep the courses straight.
One thing you have to be careful is to install one row at a time so that it can be done in appropriate manner.
You can start from the bottom of roof and move upward towards the roof top.
Then snap lines for every course or every other course.
Cut the second piece of roll roofing the length of the roof.
In order to adhere to standardized building codes and ensure adequate runoff your shed s roof must have a pitch of at least 3 12 read as three in twelve.
As a rule of thumb you will first need to build the walls and floor before you can start to.
Place the second row of.
Completing all the rows till top of room will complete your pitched room.
The term pitch refers to the slope of the roof.
Apply a 2 inch wide layer of roofing cement across the top of the first row of roofing.
First snap a line for the top of the starter course whose bottom will be flush with the waterproof shingle underlayment wsu or felt underlayment which overhangs the drip edge by 1 2 inch.
Start at the bottom side of the gable and overlap the sections of drip edge a few inches as you work your way up the roof see figure a.
Install the drip edge on the gable ends of the roof after you finish installing your underlayment.
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So let s say a roof rises 6 inches for every 12 inches in depth towards the peak.
Use a tin snips to cut the drip edge to size.
Nail it every couple of feet.
Take your chalk line from one end to the other and snap a line.
I show how i construct it showning in detail how to do the lead flashing.
This line is where you will set the top side of the starter row.
This is part two of the porch build where i am doing the roof.
Beyond that you re free to choose whatever slope best fits your plans for your shed.
Snap a chalk line.
Add the roof sheeting.
Start by measuring up the eave the length of a starter shingle and place multiple marks on the roof.
The roof pitch would be described as a 6 12 pitch.