Metal roofs must be laid flat on a vapor barrier because steel will condensate if there s any air space underneath it.
How to do metal roofing.
You will use metal roofing screws to secure the metal panels to the sheathing.
Metal roofing is also available in the form of shingles.
And for any exposed fasteners try to avoid over tightening them.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
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.
Put the steel down directly on a vapor barrier.
How to install metal roofing.
Use your neoprene washer head screws to secure the metal to the sheathing.
A metal roof is a good material for your home since it holds up well under dangerous weather conditions has a top fire safety rating and is waterproof.
Try to space the screws about 12 inches apart down the entire piece of metal.
Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm.
Space the screws about 12 in 30 cm apart down the entire piece of metal.