Feb 20, 2013 · The roof sheathing is a structural diaphragm that distributes the various load on the building to the walls. Using the purlins as the diaphragm element would lead to deflections and make the ceiling drywall the structural diaphragm element.

Sep 25, 2023 · The metal roofing we’re using (see attached) is not standing seam, but does have ridges that (maybe?) would allow some drying between the metal and the the underlayment. Given this assembly, how necessary do you think it is to add horizontal (or diagonal) 1X strapping between the metal and the underlayment?

Dec 19, 2020 · In my small metal storage sheds I had to remove the roof and put a layer of bubble foil insulation to keep condensation from falling onto my tools. I could buy the same insulation, but it will add several hundred dollars to the build; so, I was looking for more economical solutions.

Apr 4, 2011 · I will be replacing the old corrugated metal roof on my house with a new Standing Seam style metal roof. I am doing this in preparation for installing Solar panels, and I will be doing rainwater harvesting. I will be using a high reflective coating on the metal roof to reduce inductive heating of the attic and thereby the house. I would like to construct my roof in the following …

Aug 2, 2016 · I’m in climate zone 4a. I’m thinking two sheets of 3 or 4″ polyiso foam, taped seams, furring strips and metal roof on top. Would I be better off removing the existing roof down to the decking and adding a peel and stick vapor permeable membrane instead?

Nov 13, 2018 · The roofer recommended the rainscreen to provide a channel to have the roof dry in case of condensation. The roof is vented in the attic with ridge vents and at the soffits with soffit vents.

Oct 7, 2024 · The metal siding and roofing is going to be 26ga. standing seam. For the horizontal furring I was planning on ripping it to 3" - 4" to give enough area for the standing seam clips to attach to, I think that gives enough extra space around the clips to avoid splitting, etc.

Mar 8, 2019 · Remember, you aren’t going to be bringing your siding down to the roof, so at least 3 inches of step flashing will remain visible under your siding. Each piece of flashing should be bent from a piece of sheet metal measuring at least 8 inches by 12 inches; crease the flashing so that it has two 6-inch-wide legs."

May 21, 2012 · David Meiland also likes metal roofing — for its durability, recyclability, and ease of removal if the need arises. But he suspects that light-colored asphalt roofing would perform similarly, with or without ventilation. “Comparing a ‘cool metal roof’ and ‘dark gray asphalt shingle’ is apples to oranges,” he writes.

May 29, 2014 · Lets pretend the roof design details are conventional and so the roof deck sheathing will be 5/8" to 3/4". Many metal roofing dealers specify minimum of 7/16" sheathing. Design depends on type of metal roof: exposed or hidden fasteners; board and batten (pan and ridge) panels; shake and shingle panels; panel or tile system; standing seam; etc.