Ventilation

As you can see from the graphic below, lack of insulation or ventilation can cause considerable damage to roof systems, interior walls and ceilings. For this reason you should look at both adequate ventilation and sufficient insulation.

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icedamn modelInsulation - Attic insulation is measured in terms of R-values. The higher the R-value, the better the guard against heat loss. For the Rochester area an R value of 49 is recommended. First determine the current R of your existing insulation and then add more to bring your attic up to R-49. This will help keep heat from your home from entering your attic space and melting the snowpack from below.

Ventilation - deficient ventilation can cause warm air to become trapped in your attic and also melt the roof snowpack. A combination of soffit vents, roof vents, gable end vents, or ridge venting should be added to insure proper air flow to reduce warm air from building up in the attic space. In problem areas a more aggressive active thermostat/humidistat controlled attic ventilator fan may be added.

If you should have any questions regarding particular problems please feel free to contact us at the e-mail address below.

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Lotze Insulation Design, Inc.
1362 Buffalo Rd.
Rochester, NY 14624
 
Phone: 585-328-1580 / Fax: 585-328-1845