Metal Roof Joining Not Level

A fall of 1 60 is required for roofing felt s and other coarse roof coverings.

Metal roof joining not level.

My framer has never dealt with metal roofs and i would like to know whether he should cut the existing roof and connect the plywood of the extensions roof to the existing roofs plywood or have he new roof plywood butt onto the metal roof and have the roofer deal with it. Shim the low ones and take the high ones off after marking where they sit on the trusses and notch them the purlins not the truss chords with a circular saw and chisel. A plane will take ages. I presently have a cottage with a very steep metal roof.

How not to install a metal roof. Since the overhang is 16 inches or 1 33 feet the total buildup equals. The buildup equals the difference between the unit rise of both roof pitches. I m working on plans for a house and need to show the existing roof and the new modified roof.

A typical flat roof is made out of about sixteen components which all serve different purposes. Sure metal roofs can be loud in the rain but that s what happens when it s not done right. So the plate must be built up 1 6 inches per level foot of overhang. Metal roofs are not made to be installed like this.

How not to install a metal roof. Ensuring the flat roof has a fall is a critical step in the construction and the fall should be a minimum 1 80 for smooth surface such as corrugated metal or plastic roofs. Joining the fascia s and guttering to the existing seems very tricky. In the example attached some of the existing roof will become unused and the new roof will join it.

But when metal roofs are installed properly sound dampening is achieved through quality underlayment. When a metal roof fails while it could be due to its design more likely it is due to installation problems. Roof pitch slope for reference standing seam metal roofing is not one size fits all. If you can notice the difference in height it is too uneven for a metal roof.

To make the bottom cut i laid out a level cut for a 4 in 12 pitch. To let the jacks sit plumb on top of the sleepers we angled the level cuts to the 3 1 2 in 12 pitch of the shed roof setting the circular saw to a 16 degree bevel the degree equivalent of a 3 1 2 in 12 pitch. Below are some of the most commonly made installation mistakes and how you can avoid them. Improper installation can cause leaking significant life span reduction and potentially damage an entire structure.

I am preparing a small addition to the existing cottage. The reality is metal roofing can be installed quick and dirty like any other construction job and a common consequence would be the noise. Before you buy know the following design considerations as they could affect the panel profile you need or the material that will work best in your environment.