Polystyrene is applied to create foam board insulation using a variable R-value of 3.eight for each inch to 5 for each inch, depending on no matter whether it’s expanded polystyrene (styrofoam) or extruded polystyrene, which may be recognized by the blue or pink shade.What’s the best attic insulation? That is determined by your definition of �

One more approach to insulating skylights is to implement batts with struggling with among the studs after which protect your entire passage with rigid foam insulation. The foam can be secured for the studs with cap nails.When you think about house insulation on the whole, fiberglass insulation is most likely That which you picture.In case you’ve