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Proper Ventilation is extremely necessary in order for your new roof to last as long as possible. Shingle manufactures recognize this, and will void or limit their warranty if the roof is not adequately vented. Inadequate ventilation is a major cause of warranty disputes.
A properly balanced attic ventilation system will help to:
1. Remove excess heat and moisture to protect your roof from premature deterioration.
2. Safeguard your attic possessions against mold and mildew damage.
3. Minimize peeling and extend the life of exterior and interior paint.
4. Prevent roof rot in your attic or roof deck.
5. Guard against ice damming and backup in harsh winter climates.
6. Help reduce excessive heating and air conditioning costs.
Heat
In hot weather, proper ventilation prevents the attic from becoming a "hot-box" that radiates unwanted heat down through the attic floor into the living area. Attic temperatures can reach 150 degrees. Adequate venting will keep your house cooler in the summer; and save money in air conditioning bills! Heat also rises, which can cause shingles to curl, warp or crack.
Moisture
In cold weather, proper ventilation helps prevent moisture from condensing on the insulation, rafters, and roof deck. Trapped moisture can rot wood members, support growth of mold and mildew, and rob insulation of it's R-value.
Shingle Warranty Requirements
Where ventilation is not adequate, shingles can deteriorate twice as fast as shingles over well-ventilated air spaces. Many homes have been built without enough venting. Single warranties base their requirements on the FHA Minimum Property Standards or the Universal Building Codes. Both call for:
1. One square foot of ventilation for every 300 square feet of attic space.
2. One half of the vent area should be intake, and the other half exhaust.
3. We can help make sure your venting complies with these requirements!
Visit these websites for more information on venting:
Copyright 2004, 2005 Mike Priebe Roofing, Inc
4355 Hickory Ridge Ave, Brunswick, Ohio 44212
(330) 273-2700 or (440) 582-1723
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