Put the steel down directly on a vapor barrier.
How to do metal roofing.
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Try to space the screws about 12 inches apart down the entire piece of metal.
It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same.
Many homeowners and roofers are choosing it not only for safety but for durability.
Use your neoprene washer head screws to secure the metal to the sheathing.
How to install metal roofing.
Metal roofing is also available in the form of shingles.
And for any exposed fasteners try to avoid over tightening them.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
You will use metal roofing screws to secure the metal panels to the sheathing.
Space the screws about 12 in 30 cm apart down the entire piece of metal.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.
Moreover try to ensure that the screws are all aligned evenly.
Take care the first piece is aligned precisely perpendicular square to the edge.