How To Start A Pitched Roof

If your eave is one straight length then pick an end and work to the other.

How to start a pitched roof.

Gable end roof construction if the pitched roof is not a lean to but a normal gable roof we have to divide the total roof span by two in order to form two right angle triangles back to back. This is part two of the porch build where i am doing the roof. This ice and water membrane is typically applied to overhang the eaves by 1 4 3 4. 1 2 the total span is equal to the horizontal span that one rafter will cover.

Next on the peak side attach the tarp to the 2 by 4 using cap nails. As a rule of thumb you will first need to build the walls and floor before you can start to build the shed trusses. Screw the 2 by 4 directly into the roof to secure it. Completing all the rows till top of room will complete your pitched room.

By knowing the span of the roof and the pitch the pitch is the angle at which the rafters rise we can work out the length of the rafters. Then fold the excess tarp under a few rotations for a tight clean fit. To be fully effective it should extend up the roof to a point at least 24 inside the vertical extension of the interior side of the wall. The pitch of your roof is determined by the measurement of the vertical rise by the horizontal run.

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. I show how i construct it showning in detail how to do the lead flashing. One thing you have to be careful is to install one row at a time so that it can be done in appropriate manner. At this time any valleys on the roof should also be flashed with an ice and water membrane.

The 2 by 4 should be about 2 feet longer than the tarp width. After gathering all required materials and tools it s time to start the construction process for your pitched roof. Start by applying the drip edge to the eaves of your roof. So let s say a roof rises 6 inches for every 12 inches in depth towards the peak.

You can start from the bottom of roof and move upward towards the roof top. Use a roofing nail 1 to tack the drip edge down one every 10 when placing two pieces of drip edge together overlap one end over the other by 1 and secure using two roofing nails one in the back and one in the front.