In this photo we are looking at a can light cover! This tan mound is sealing off the can light which is the inverse of recessive lighting in your attic. These become places where conditioned air from lower levels escape up into the attic. These can lights are not only points of leakage but also fire hazards. The special thing about the can light cover we use, TiteShell, is that these patent protected can light covers are fire-proof, making your home safer as well as more comfortable. Note that this is another place in which we use ZypFoam!