Attic Insulation is a crucial element when it comes to the life of your roof.
Yet, most roofers don’t know anything about attic insulation, besides if it’s there or not.
Too much insulation and you can block critical parts of your roof structures engineered ventilation.
Too little insulation and you can experience heat/moisture loss from the house that can condense on the roof decking inside of the attic, causing lots of condensation, mold or even make shingles start to curl before their expected lifespan. Insulation in conjunction with ventilation helps prevent temperature differentials which is what shingle manufacturers recommend as part of their warranty.
The goal is to have your attic completely “air sealed” off from the house to prevent conditioned air from migrating into the attic space as well as an adequately insulated attic without blocking the airflow of any of your attics ventilation system. It sounds easy enough, and it is, as long as you know what you’re looking for.
Extra benefits to your attic being properly sealed off and insulated include cooler houses in the summer because excess heat doesn’t build up in the attic during the hot summer months, which also equals $$$ being saved in the form of reduced energy costs from possibly not having to cool your house as much. In the winter you’ll also see savings because you won’t lose as much warm air to the attic. Plus the added cost savings of your roof potentially lasting longer.