Tips On Properly Installing Roof Vents

Roof vents can be a great addition to a home or building in helping to relieve excess heat built up in the attic space. This can help reduce utility bills and help to keep the building cool on those mid temperature days. If they are installed improperly though, they can be the source of leaks and issues for years to come.

The first concern should be in the size of the roof vents itself. These should be selected so the when the hole is cut in the roof, that it fits between the roof trusses and does not overlap on either side. Take careful measurements before selecting and purchasing a vent so that it falls within this guideline.

The second item that should be factored in is how much air will need to be removed from the area in question. It is better to install a few smaller vents rather than trying to put one large one in. Strategically placed, these can evenly remove all the heat rather than having only portions of the area get the relief they need.

Be sure that once the roof vents are in place, that they are sealed to the roof properly. There are several ways to do this and depending on the type of roof in question, each method has its advantages. One common practice it to put ribbon caulk under the lip of the vent before screwing it down to the roof deck.

This helps to ensure a good seal around the base and keeps any moisture from bleeding through the screw holes. Once the vent is secured, flashing should be placed completely around it and then tar or roof sealer applied over all of it. The flashing is best when installed on a curve to create a natural drain to funnel water away from the vent during times of rain or snowmelt.