Roof Ventilation – How & Why

Is Your Roof Ventilated Properly?

Whether you live in a mansion or a small bungalow or anything in between, there is probably one part of your house doesn’t get as much attention as it should:

The attic.

Though often ignored other than to store away treasures from years past, the attic is an important feature of your Proper Roof Ventilationhome. Its proximity to your roof makes it a vital area for ensuring the integrity of your roof. The attic and roof also help to regulate the temperature of living areas inside your home by ventilating your roof.

Think of your roof and attic as a hat for your home. They protect the living areas in your home, but they also do so much more. In the winter, they can help keep you warm, and in the summer, they can help keep your home cool. But this only works if both elements are kept in good condition.

Another step to keeping your roof and attic in prime functioning condition is ensuring that you have proper attic and roof venting.

Purpose of Roofing Ventilation

No matter where you live, attic/roof venting works. You could live in the Arctic or in the Amazon, and in either case, proper venting can protect your roof and keep your family more comfortable throughout the year.

In cold areas, the primary purpose of installing roofing ventilation is to ensure that the roof stays cold enough during cold months to prevent the snow from melting and forming ice dams. Proper ventilation in cold climates also ensures that any moisture that rises from the living spaces below to the attic is vented so it doesn’t lead to things like mold and mildew.

In warmer climates, the main purpose of ventilation is removing hot air heated by the sun from the roof or attic to reduce the strain on the home’s cooling system and maintain a more comfortable temperature in living areas.

In areas with warm summers and cold winters, proper ventilation serves both purposes, keeping your home cool during the summer months and preventing roof damage and moisture accumulation during the colder.

Venting the Roof Deck

Venting the roof deck can be challenging, but it is definitely worth the effort. For basic roofs that are simply constructed, the process isn’t too bad, but it may seem next to impossible for roofs with valleys, hips, dormers or skylights.

When venting the roof deck, there needs to be a minimum of 1” of airspace in between the back of the roof sheathing and the top of the insulation, however, 2” is better. Unfortunately, this often means that it is necessary to fur out the rafters in order to allow space for additional insulation.

There are a few drawbacks to venting the roof deck. In addition to decreasing the space for insulation, snow can potentially enter the soffit and ridge vents, potentially causing rot when it helps. High winds can also force rain in the vents and cause similar problems. Because of the difficulty involved in venting a roof deck and the potential for major problems when it is not done right, this is a job that always needs to be left to the pros.

Attic Ventilation

Attic ventilation is much simpler than venting the roof deck, and because the roof itself isn’t involved in installing the ventilation, it doesn’t matter if it features a complicated design. Prior to any insulation being installed in the attic, the top level of the house needs to be completely airtight. Also, the attic needs to be free of everything except insulation, unless you build an elevated platform to use for storage.

Once the attic is thoroughly sealed off from the living space below, you can install roof vents that allow moisture to escape. You will also need to install soffit vents. These should be installed on both sides of the house, and the need to be evenly spaced along the soffits. Avoid placing these vents over framing.

In a well-insulated attic, there could be insulation may be blocking the space between the rafters and exterior walls. In this situation, air cannot flow from the soffit vents to your roof vents. Adding baffles is a solution which allows air to most past the insulation.

Roof Ventilation in Denver

In Denver, we experience warm summers and chilly winters, so it is important to have adequate ventilation that will work to keep your home cooler in the summer and prevent issues like ice dams and moisture buildup in your attic in the winter. Proper roof ventilation in Denver is extremely important. Because the job can be difficult, we recommend leaving it to the professionals. If you need help with roof ventilation, contact us.

When you trust the experts at 1-derful Roofing for your Denver attic ventilation and roof ventilation needs, we will help you choose the venting options that best suit your home and the local climate. You can rest assured that our technicians will get the job done right, and you will enjoy the benefits for years to come.

To learn more about attic and roof ventilation in Denver and the surrounding areas, please give us a call at 303-647-9119.