To vent. Venting, like the ridge vent on your house, allows slightly warmer, moisture filled air to exit. Without openings at top of your roof, your attic would be sweating wet and this creates mold and inefficient insulation, shortened roof board life, etc. That is why there is roof vents, of some kind, on every house.
Imagine drying your clothes in a dryer but not venting the hot, steamy air outside? Your house is soon a vapor chamber. Take a shower without an exhaust vent fan and you'll fog up the bathroom. Venting is air moving OUT.
That air must be replaced somehow. Controlling how fast the "make up" air enters the chamber and where it enters is the key. If you seal off your intakes, the exhaust simply quits working. There is no exchange. No air coming in means no air escaping. Thus, do not seal off the air intake, which is always a lower point, and do not seal off the vent, which is always a higher point. Again, "warm" air rises. You want it to rise and exit out the roof vents. This will take excess humidity and ammonia gases with it.
Control the air intake and control the air exiting, but entering and exiting it must, or the air becomes foul, laden with moisture and harmful.
Imagine drying your clothes in a dryer but not venting the hot, steamy air outside? Your house is soon a vapor chamber. Take a shower without an exhaust vent fan and you'll fog up the bathroom. Venting is air moving OUT.
That air must be replaced somehow. Controlling how fast the "make up" air enters the chamber and where it enters is the key. If you seal off your intakes, the exhaust simply quits working. There is no exchange. No air coming in means no air escaping. Thus, do not seal off the air intake, which is always a lower point, and do not seal off the vent, which is always a higher point. Again, "warm" air rises. You want it to rise and exit out the roof vents. This will take excess humidity and ammonia gases with it.
Control the air intake and control the air exiting, but entering and exiting it must, or the air becomes foul, laden with moisture and harmful.
Last edited: