Savings Calculator

R-Values Help

R value is a scientific measure of thermal resistance. Higher R numbers represent a more effective insulation material. Use the tables as a reference point to help determine your R values.

Contemporary Insulation

Type of insulation	Application	Approx R per inch	Description
Fiberglass loose-fill	Attic Ceilings	~R-2.5	Short fiberous and fluffy texture, white color, itchy to touch, formaldehyde free
Fiberglass batts (unfaced/paper faced/foil faced)	Wall Cavities	~R-3.7	Long fiberous and fluffy texture, white or pink color, itchy to touch
Fiberglass wall spray (glue application)	Wall Cavities	~R-3.7	Short fiberous and fluffy texture, white color, itchy to touch, formaldehyde free
Cellulose loose-fill	Attic Ceilings	~R-3.7	Shredded paper texture, light brown color, non-itch
Cellulose wall spray (water application)	Wall Cavities	~R-3.7	Shredded paper texture, light brown color, non-itch
Semi-rigid open cell urethane spray foam (0.5 lb density)	Roofline & Walls	~R-3.8	Semi-ridged sponge texture, off white color, non-itch
Semi-rigid open cell urethane pour in place foam (0.5 lb density)	Wall Cavities	~R-3.8	Semi-ridged sponge texture, off white color, non-itch
Rigid closed cell urethane spray foam (2.0 lb density)	Roofline & Walls	~R-5.5	Ridged Styrofoam like texture, off white color, non-itch

Antiquated Insulation

Type of insulation	Application	Approx R per inch	Description
Rock wool loose-fill	Attic Ceilings	~R-2.5	Wool texture, grayish brown color, itchy to touch
Rock wool batts	Wall Cavities	~R-3.0	Wool texture, grayish brown color, itchy to touch
Vermiculite loose-fill*	Attic Ceilings	~R-3.0	Small styrofoam bead texture, white color, non-itch
	* White styrofoam looking beads which may have asbestos, call proper environmental restoration company

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