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Consider the conditions your roof must endure.  First, there is the intense heat of the sun, which scorches the surface of the roof and raises rooftop temperatures 50 to 75 degrees fahrenheit above ambient temperature.

Asphalt is one of the primary ingredients in roofing shingles.  Its purpose is to provide the waterproofing integrity for the roof.  Secondarily, the asphalt holds the colored granules in place and contributes to the overall strength of the shingle.

When winter arrives and temperatures plunge, you might think the movement of heated air would no longer cause problems in attics.  But that's not true.  With seasonal changes, the conditions just reverse.  Heat doesn't travel from an attic into the living quarters.

What's the purpose of attic ventilation?  It seems like a simple question, easy enough to answer.  Unfortunately, all too often, that's not the case.

A Mule-Hide Roofing System is a single ply membrane adhered to your roof by adhesive and specially designed accessories.  The technical name is EPDM.  EPDM is rubber that comes in large, flat sheet sizes.

Although the problems of attic heat and moisture have different causes, they share a common solution: a high-efficiency ventilation system that allows a uniform flow of air to sweep the underside of the roof sheathing.

When homeowners set out to eliminate ice dams, their typical response is to add more insulation to attics.  But no amount of insulation, if used alone, can eliminate the formation of ice dams.  An efficient attic ventilation system must be part of any solution.

The word "ventilate" comes from the Latin word for "to fan," the action of causing air to move.  And that's exactly how ventilation works:  it provides the conditions that allow air to move. And that's exactly how ventilation works: it provides the conditions that allow air to move.

In describing how ventilation works, we discussed intake and exhaust vents in general terms, perhaps giving the impression that a single type existed to serve each function.

Did you know that most homes 30 years or older are not adequately insulated? By upgrading your attic insulation, you can: Enjoy year-round comfort with a home that stays cooler in the summer and warmer in the winter.Save money on heating and cooling costs and improve your HVAC system efficiency.