When you attain any ridge vents, exchange and enclose them with flashing and sealant. Thoroughly Reduce the shingles to suit all around them. The contractor that developed my property advised us that the house is a very sealed household, that means there aren't any soffit vents and no attic vents. https://ideajungle.net/how-to-choose-your-next-roofing-company-in-dekalb-il-key-factors-for-homeowners/