Metal Roof Have To Have A Ridge Vent

I would recommend you cover or remove any existing roof vents if you are planning to install ridge vents.

Metal roof have to have a ridge vent.

The standard lengths for metal roof ridge cap are ten feet to twelve feet long. In many cases for existing homes this is the easier way to go. Metal roofing works well with this because the metal is unaffected by heat not being able to pass through it and enter the attic. That means roof ridge vents are like the exhaust system.

It s made from a permeable material and is placed on top of the metal roofing panels at the ridge of the roof. The other option of course is a vented attic which requires an equal balance of intake and exhaust vents. A ridge vent is designed to allow air to flow freely from the attic. Metal roof ridge vent can decrease moisture levels in an attic by 10 and increases the r value of your insulation by 25.

Standing seam metal roof texture improperly designed ridge vents can actually reverse the proper airflow in your attic causing heat build up and wetting your insulation which can lead to attic mold and higher home energy bills. The safest way of venting a metal roof is installing a roof ridge vent. A roof ridge vent is static but doesn t require cutting into the metal roof s middle. The soffit vents act like the air intake for the home.

Position a section of metal ridge cap over the peak of the metal roof with the end of the ridge cap flush with one end of the roof peak. Before you begin the ridge cap installation on your metal roof make sure that the eave trim and gable trim are installed. This option might be the updated system which most newer homes use but if you have an older home then you might need the soffit vents too. Below we ve compiled some helpful tips on how to install a ridge vent for metal roofing.

If you are overlapping ridge cap flashing have a 6 inch overlap. The purpose of the ridge vent is to create constant air flow along the horizontal ridge of your home. Mark a pencil line on the ridges of the installed metal roofing panels using the edge of the ridge cap as a guide. A ridge cap is typically the last piece of trim that will be installed.

Now the house needs a new roof and the contractor is recommending that pizza s sister install a ridge vent. This will mean that you will need to cover or remove the gable vents though as this will hinder the effectiveness of the ridge vent. I have learned here building science articles by joe lstiburek that in her case ridge vents are unnecessary and actually detrimental to cooling the attic space roof when you already have gable and soffit vents something to do. The ridge vent is then covered with a metal ridge cap.