Insulation products with an R-value of R30 are appropriate for use in ceilings within homes located in climate zones 1 to 7, as determined by the US Department of Energy. They have high enough insulating capacity to truly stabilize your home’s indoor temperature, especially on the upper floors. But if you’ve got a cathedral ceiling in your attic, you will need a specific type of insulation product called R30C insulation. Along with providing the R-value you require, this kind of product has the right size and density for installation into your cathedral ceiling frames. Pacific Insulation Supply offers R30C insulation from trusted brands like Knauf. Before you buy any product, you can call us for a free quote and get some additional advice on insulating your ceiling cathedral properly. Get in touch with us today!