Proper attic ventilation is crucial for a long-lasting roofing system. Poor attic ventilation can ruin your insulation, and raise your energy bills!
||Aluminum ridge vents are known to allow seepage and cause maintenance issues down the road. Most roofers take the easy way out and install the aluminum vents with steel nails. This not only causes electrolysis, a reaction between fair and unfair metals, but also creates a maintenance situation by requiring resealing of the fasteners yearly. In either case, having exposed fasteners creates problems.|
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|By far our most popular vents, Off Ridge Vents are designed for Florida. Most of our roofs here in Florida do not have enough ridge/crown space to properly ventilate using ridge vent products. Therefore another vent type was created to allow for proper ventilation. We recommend this type of vent as it provides good ventilation and is highly wind resistant.|
It is estimated that 9 out of 10 homes in North America do not have proper attic ventilation. Why? Because most people are unaware that attic ventilation can impact the longevity of their entire home!
For example, in the summer, an improperly ventilated attic can cause heat to build in excess of 160°F. This superheated air eventually penetrates the ceiling insulation into the living area below.
Types of damage that can result include:
- Premature aging of your roofing system.
- Warping, cracking, or breaking down of wood framing.
- Damage to siding, exterior or interior paint, and wallpaper.
- Higher energy costs.
In the winter, various household appliances, bathtubs, showers, and cooking vapors can contribute to excess moisture build-up. Improperly ventilated attics will allow this moisture to collect and cling to the underside of the roof. There, it will condense and fall, soaking the attic insulation and reducing its efficiency
- Roof deck warping and rotting of the wood frame.
- Mildew growth.
- Buckling of shingles and felt.
Proper attic ventilation systems allow a continuous flow of outside air through the attic (see illustration at left), protecting the efficiency of the insulation and helping to lower temperatures in the living space.
It consists of a balance between air intake (at your eaves or soffits) and air exhaust (at or near your roof ridge).
The FHA (Federal Housing Administration) recommends a minimum of at least 1 square foot of attic ventilation (both intake and exhaust) for every 300 square feet of attic space. For example, if your attic is 900 square feet, you need a total of 3 square feet of ventilation. This amount is generally divided equally between intake and exhaust ventilation (i.e., 11/2 feet of each), to insure proper air flow through the attic. To calculate the amount of ventilation you need for your home, follow the example shown on the next page.
Solar Attic Fan Brochure - View
Metal Roof Ridge Vent - View