Not Venting A Metal Roof

A metal roof typically does not increase nor decrease the need for ventilation.

Not venting a metal roof.

When determining the placement of the roof vents measure the vent housing and mark off the space on the roof. Basically the term cold roof refers to a traditional roof or vented roof while hot roof refers to a roof that is not ventilated and which has foam insulation attached directly to the roof sheathing. A roof ridge vent is static but doesn t require cutting into the metal roof s middle. Step 1 determine the type of vents you wish to install.

Should you vent a metal roof. The safest way of venting a metal roof is installing a roof ridge vent. Controlling condensation condensation can wreak havoc on metal causing corrosion reduced thermal performance of insulation mold and mildew growth and even insect infestations. 7 things to know before choosing a metal roof if your current roof is the root of your headache and maybe even a long list of costly home repairs consider these metal roofing pros and cons.

Metal roofing works well with this because the metal is unaffected by heat not being able to pass through it and enter the attic. For example in warm and humid areas outside air that enters a building without moving through a ventilation system can bring with it large amounts of humidity. Without proper ventilation heat and humidity can build beneath the metal roofing warping the rafters shortening the life of the roof and reducing energy efficiency. Installing some type of ventilation mechanism on a metal roof is not a lot different from the addition of vents to any type of roof.

Ventilation that meets code requirements is adequate for any type of roofing material including metal. However there are a few simple tips that will help make the process a little easier and also ensure that the vents are placed to allow the maximum benefit. We do need to mention though one very rare scenario we have seen just a couple of times over our 35 years. Allow space for the edge of the vent opening where it will rest on the roof.

The other option of course is a vented attic which requires an equal balance of intake and exhaust vents. A roof vent installation kit will provide everything you need to vent your roof in one convenient package. The options for venting metal. These are very easily recognizable as they are rather large when compared to other types of roof vents and they tend to squeak or rattle when they are moving.