Attic ventilation, moisture and hot air

About Attic Ventilation How do you get the moist air in the winter and the hot air in the summer out of your attic? Answer: lots of attic vents. You want to allow the moist air to escape, especially in winter time when the interior of the attic is warmer than the outside temperature. The moisture (humidity) will condense at a cool temperature. The homes constructed today are tighter and therefore trap more moisture and heat in the attic if not vented adequately. Building standards have sewn up the homes that we live in tighter than a drum. Surprisingly, standards of ventilation adopted in the 1930s are still in use today! Most homes are woefully under ventilated. Ventilation and roofing Vent...

Whole-house roof fans and wind roof turbines

Whole House Fans Using Whole-house roof fans with roof wind turbines                                                                       When whole-house fans are used in conjunction with roof wind turbines a temperature drop of 3 to 8 degrees can be achieved within minutes. Wind turbines typically only spin when the wind is blowing or their is sufficient hot air coming from the attic.The turning from hot air is usually slow. Crank up a whole house fan and the movement of air thru these wind turbines will make them spin like crazy. This means that the cool outside air is being drawing thru open windows, thru the whole-house fan, thru the attic and...