To vent the roof holes are cut in the old roof detail 1 above the soffit which pulls air through the soffit vents underneath.
Installing metal roof venting.
This may include the round whirlybird types that are placed.
Cool outside air then travels under the shingles to the vented ridge detail 2 pulling out moisture and heat.
Most metal shingles will be attached to the roof using metal shingle.
If your house has a gable roof you can install a vent in each gable then mount an exhaust fan in the attic behind one of them that is controlled by a thermostat.
Like static vents a turbine vent must pair with soffit vents but one turbine vent can quickly exhaust stale attic air resulting in only one entry into the metal roof.
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This will involve determining the placement of the vents.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.
Various size vents will come.
The other option of course is a vented attic which requires an equal balance of intake and exhaust vents.
Metal roofing works well with this because the metal is unaffected by heat not being able to pass through it and enter the attic.
Prepare the roof area.
How to install vents on a metal roof step 1.
Beneath the roof eaves in the soffit is the standard place to install intake vents because it s the lowest spot in the roof.
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Start in the attic and drill a hole through the roof in the desired vent location.
Try to keep it close to the fan location.
Determine the type of vents you wish to install.
Roof ridge vents the safest way of venting a metal roof is installing a roof ridge vent.
From up on the roof use a jigsaw or reciprocating saw to cut a 4 in.
That would depend on the style of roof you have.