The affect of poor ventilation and insulation is often overlooked. Poor pass-through ventilation, from your soffit vents (located at the eaves) to your ridge or hat vents (located on and near the ridge) can cause a baking, blistering, and buckling effect on your shingles. In states like Ohio where attic and surface temperatures of the roof can reach well into the triple digits, it is absolutely essential for your property’s airways to be free and clear.
Another side effect of poor ventilation is the accumulation of moisture on the inside and outside of your roof. On the outside, poor ventilation creates ice dams. On the inside, poor ventilation can lead to the development of a host of mold and mildew spores. The presence of spore forms commonly accompany bathroom/shower vents that don’t penetrate through the roof. Needless to say, a property that can breathe, in theory, should be problem free for years to come.