Attic Air Flow

It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow.

Attic air flow.

In the summer natural air flow in a well vented attic moves super heated air out of the attic protecting roof shingles and removing moisture. Increased ventilation will make the entire roof cold and reduce or eliminate ice dams. 53 lineal feet required. I have large attic with ridge vents and screened vents at either end of the attic to maintain air flow.

Baffles are available at home centers. Ventsure inflow intake vent. Choose one of the following products to meet the recommended intake nfva of 528 square inches. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge.

Box out light fixtures. We insulate moisture proof and throw up every barrier to heat and cold. These fans may be controlled by a switch or a thermostat which detects heat build up in the attic space and automatically exhausts the attic space. Your home is a heated conditioned area that is designed to keep air in.

If your attic is well insulated the insulation might be plugging the spaces between rafters just above exterior walls. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. The ice traps water behind it allowing the water to seep back under the shingles and leak through the roof. Water is insulation s enemy.

That means air can t flow from the soffit vents to the roof vents. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic. Whole house fans powered attic fans. The insulation will resist heat transfer into the house.

I have a shop in my attic for some of my hobbies and it get s very hot in the summer. Proper insulation and air sealing also keeps attics cold in winter by blocking the entry of heat and moist air from below. A different animal first think of your attic and roof as a separate entity from your home. Misconceptions about the air flow in your attic can lead to thousands of dollars in damage and repair costs.

These ice dams form when warm attic air melts the snow on the roof and the water refreezes along the colder edge of the roof. Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be. Allows cool dry air to enter the attic. The solution is to add baffles which allow air to flow past the insulation photo 9.

The following product options will allow you to achieve an intake nfva of 528 square inches.