Attic Ventilation Issues

Poorly cut soffit vents.

Attic ventilation issues. Intake vents located at the lowest part of the roof under. Attic ventilation problems examples of good insulation baffles. Here are some subtle and some not so subtle things to watch out for. Excess heat and moisture cause roof decking to dry rot and shorten the life of shingles and.

Sounds easy follow the code calculations install a few rvos or a ridge vent and make sure you ve got decent soffit vents. Too many people believe the importance of roof ventilation is to increase energy. These baffles gives an air channel about 8 to 12 square inches. Examples of inadequate insulation baffles.

And many homes with terrible attic ventilation are completely mold free. Attic ventilation myths that are off the charts 1. Sagging or spongy decking. An unexplained uptick in your household heating and cooling bills which can happen if your attic insulation gets wet.

Yet many attics with ventilation far superior to the code requirements suffer from mold issues. This article will cover why you need ventilation the most common type of ventilation the building code requirements and common ventilation related issues. More attic ventilation is good. As a result many attics are not properly ventilated.

While there are other factors that could be causing your roof to deteriorate like poor installation in most cases when a roof is prematurely aging it will be poor attic ventilation that is at the heart of the issue. To better understand attic ventilation it is best to start with the basics. These baffles give an air channel 3 5 inches by 22 inches which equals 77 square. More frequent hvac repairs as heating and cooling equipment that s under a heavier workload can become more.

When excess moisture seeps into roof. Roof vents are for warmer climates. Without good ventilation moisture builds up in your attic which slowly eats away at the materials in your roof. Nope venting an attic is actually pretty hard.

Short roof life. Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. If the attic ventilation system is not a balanced combination of intake vents installed in the soffit under eave or at the roof s bottom edge and exhaust vents installed at or near the roof s peak the attic ventilation system will not be efficient and effective. The main strategy that should be utilized when designing roof or attics to be free from moisture problems and ice dams along with control of heat gain or heat loss regardless of ventilation approach is the elimination of air movement particularly exfiltrating air in cold climates and infiltrating air in hot and hot humid climates.