Tin roofing also known as metal roofing is considered more durable than composition or wood shingles.
Skip sheathing metal roof.
Design depends on type of metal roof.
There is only skip sheathing present.
Traditionally skip sheathing consists of 1 inch by 4 inch boards nailed to the rafters with gaps between the boards.
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.
Board and batten pan and ridge panels.
I am having a stone coated metal roof installed on my house that has a tile roof.
Most you see on homes and many commercial building is non structural metal roofing and needs to be on solid sheathing.
Next purlins parallel to the eaves and then roofing.
The tile roof system leaks like a seive the metal roof contractors are proposing laying the 30 felt paper directly over the skip sheathing.
As well as all valley s.
The roofing is manufactured in panels that.
On top of your insulation you need an air barrier.
First of all thanks for selecting a metal roof.
Installing over skip sheathing is fine.
Exposed or hidden fasteners.
The underlayment is very important.
Installing wood stripping under a tin roof.
The rest of the roof would be covered with titanium psu30 or something similar.
Skip sheeting or spaced sheathing is just as it sounds.
Sheathing with gaps between.
Under the tile there is no felt paper or solid sheathing.
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.
Under your metal roofing you need roofing underlayment to catch the dripping condensation.
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 easiest way to do this is to have solid sheathing with taped seams that s your air barrier covered with roofing underlayment.
The entire roof deck is relatively uniform where you can step on any part of it without slipping through spaces.
You ll want to use both longer sheathing nails and longer roofing nails.
After you strip the roof do spot repairs to the existing sheathing where needed then go right over it.
Shake and shingle panels.
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.
Many metal roofing dealers specify minimum of 7 16 sheathing.
Lets pretend the roof design details are conventional and so the roof deck sheathing will be 5 8 to 3 4.
Grace ice and water shield or titanium udl50 is recommended along the eave up to 3 0 beyond the inside of the exterior wall.
