Attic Ventilation Issues

Intake vents located at the lowest part of the roof under.

Attic ventilation issues.

Attic ventilation myths that are off the charts 1. More attic ventilation is good. Too many people believe the importance of roof ventilation is to increase energy. An air conditioner in a home with improper attic ventilation must work overtime to keep the inside.

To better understand attic ventilation it is best to start with the basics. Sagging or spongy decking. Without good ventilation moisture builds up in your attic which slowly eats away at the materials in your roof. These baffles gives an air channel about 8 to 12 square inches.

When excess moisture seeps into roof. 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. Sounds easy follow the code calculations install a few rvos or a ridge vent and make sure you ve got decent soffit vents.

Here are some subtle and some not so subtle things to watch out for. 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. Attic ventilation problems examples of good insulation baffles.

Excess heat and moisture cause roof decking to dry rot and shorten the life of shingles and. Short roof life. And many homes with terrible attic ventilation are completely mold free. 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.

Yet many attics with ventilation far superior to the code requirements suffer from mold issues. Roof vents are for warmer climates. Poorly cut soffit vents. These baffles give an air channel 3 5 inches by 22 inches which equals 77 square.

An unexplained uptick in your household heating and cooling bills which can happen if your attic insulation gets wet. Nope venting an attic is actually pretty hard. More frequent hvac repairs as heating and cooling equipment that s under a heavier workload can become more. A c wear and tear.