Skip sheeting or spaced sheathing is just as it sounds.
Skip sheathing metal roof.
The underlayment is very important.
Shake and shingle panels.
Under the tile there is no felt paper or solid sheathing.
Board and batten pan and ridge panels.
And unlike asphalt slate or clay roofs that hold onto solar heat after the sun goes down metal quickly releases its heat back into the atmosphere.
Next purlins parallel to the eaves and then roofing.
Sheathing with gaps between.
Installing over skip sheathing is fine.
On metal frame building and the like you will likely see structural metal roofing installed on purlins that is what those 1x4 are purlins and those metal roofing panels are rated for that type of installation.
Lets pretend the roof design details are conventional and so the roof deck sheathing will be 5 8 to 3 4.
Osb or plywood over skip sheathing makes for a much stiffer roof deck resists problems with expansion better and obviously doesn t require all the hassle of removing it.
On top of your insulation you need an air barrier.
And you b don tneed to sheath the roof the difference in price between a 4x8 sheet of osb or ply and 8 pieces of 1x4x8 for exmple is big.
The roofing is manufactured in panels that.
Many metal roofing dealers specify minimum of 7 16 sheathing.
Exposed or hidden fasteners.
You ll want to use both longer sheathing nails and longer roofing nails.
Tin roofing also known as metal roofing is considered more durable than composition or wood shingles.
The rest of the roof would be covered with titanium psu30 or something similar.
Grace ice and water shield or titanium udl50 is recommended along the eave up to 3 0 beyond the inside of the exterior wall.
Design depends on type of metal roof.
The time saved in humping edless 4x8 sheets up onto the roof nailing them off and creating staging areas to work from is b huge as you install the strapping purlins at 24 oc you are creating a.
After you strip the roof do spot repairs to the existing sheathing where needed then go right over it.
The tile roof system leaks like a seive the metal roof contractors are proposing laying the 30 felt paper directly over the skip sheathing.
Traditionally skip sheathing consists of 1 inch by 4 inch boards nailed to the rafters with gaps between the boards.
As well as all valley s.
Most formed metal roofing the type that imitates wood slate or clay comes with a built in thermal break that insulates against heat passing to the roof deck below.
The entire roof deck is relatively uniform where you can step on any part of it without slipping through spaces.
Panel or tile system.
Most you see on homes and many commercial building is non structural metal roofing and needs to be on solid sheathing.
I am having a stone coated metal roof installed on my house that has a tile roof.
There is only skip sheathing present.
The easiest way to do this is to have solid sheathing with taped seams that s your air barrier covered with roofing underlayment.
