The massive amounts of cold, dry outdoor air would thus mix ... vents that act as the cap shingles at the top of the roof. Other vent products are coils of plastic fabric resembling coarse steel ...

You should cut off a minimum of 6 inches. And if your attic is cold, the exposed vent pipe should be insulated. Vent pipes seldom freeze that solidly; the frost is more crystallized and can be ...

Roof ventilation is based on the simple fact that ... gets warm enough to melt snow on the roof while the eaves remain cold. Then, when the meltwater reaches the eaves, it freezes and forms ...

Yet proper ventilation is an important part of keeping ... causing leaks and structural damage. Ideally, the attic should be cold in the winter, with the insulation working to contain heated ...

Roof ventilation is based on the simple fact that ... gets warm enough to melt snow on the roof while the eaves remain cold. Then, when the meltwater reaches the eaves, it freezes and forms ...

When it’s very cold and snow is on a roof ... When outdoor air is less humid than attic air, ventilation can also help reduce moisture buildup in the attic. There are two ways to vent a roof ...

The system that illustrates the venting concept most clearly is one many of you will be familiar with: the "cold-roof system," where air is channelled through vents in soffits to a ridge on the roof.

Ridge vents are ineffective if they are not in combination ... When the warm, moist air comes in contact with the cold roof sheathing, condensation occurs and mold develops. The insulation should ...

. Q. I hate to still keep you on the "cold roof" subject, but I want to make a cold roof on my 6,000 square foot Victorian 4-unit with 2 furnaces that are located in the attic. What can I do? K.C ...

Seldom do most of us give much thought to the air flow in our attic. Ventilation is vital for roofing systems on homes with unheated attic spaces. Roof vents are the key to proper venting.

First, bathroom fans should not be vented through roofs in cold climates ... but you will have to have solved the ventilation problem first. If the mold is massive, you should call on a firm ...