However, not all materials are suitable for every insulation-related renovation project.Insulation Index: What is R-Value, and How Much of it Do You Need?Do you want to keep your heating costs from going through the roof?It’s easy: Keep your heat from going through the roof.Prehistoric man used animal skins to provide a buffer against the weather, and both ancient and modern humans have taken refuge in homes carved into the earth to maintain a comfortable temperature.
" That's a valid question but you need to think of air movement in your house as if the house were a chimney. So, I want you to insulate your attic space to an R-value that matches the region you live in. Most building codes today require that when a new house or addition is built in a northern climate, it must have a vapor barrier.Filling this with insulation would block the venting from the soffit to the gable vents.I had some companies offer to blow cellulose in the space and make it a warm roof.Besides reducing radiant-Increase in the amount of heat in a space, including heat transferred from outside (in the form of solar radiation) and heat generated within by people, lights, mechanical systems, and other sources. from the roof, the membrane makes the attic more attractive and dust-free for storage use, and it keeps the blown-in insulation from blocking the rafter bays.While they can reduce peak attic temperatures by 10°F to 30°F, the barriers haven’t proved to be cost effective in all geographic regions, or in attics that are adequately insulated, that are air-sealed, and that have well-insulated, wrapped air-handling equipment and ductwork.