Have you ever gone into an attic during the summer? Obviously, it can get extremely hot. Another feature unique to Glavin’s house in the Parade is a product called TechShield, manufactured by Louisiana Pacific. LP takes their standard roof sheathing and applies an aluminum foil underneath. It is the number one radiant barrier in the marketplace and LP states that cooling costs can be reduced by up to 17% just by using this product.. There are some proprietary processes that LP utilizes, which is why Glavin Homes believes it is the best radiant barrier product.