Although it’s one of the most expensive components of the exterior of your home, a roof is rarely given much thought until replacement is needed.  This provides the optimum time to carefully understand your choices so that the new roof not only enhances your curb appeal but lowers your energy costs.   Here’s what you need to know. Insulation: While shingles are a critical component of a roof, they should only be a part of the conversation.  Thorough roofing contractors  should also be performing a visual inspection of your attic to verify the quality and R-value of its insulation.   Without correct…