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www.reference.com/world-view/thick-r-38-insulation-688968fdb71426cb

R-38 fiberglass batt insulation is approximately 6 1/4 inches thick, but loose cellulose requires over 12 inches of material to provide the same resistance value. R-values measure the thermal resistance based on the material and its thickness.

www.reference.com/world-view/thick-r-30-insulation-65a3cf7f3f7de106

R-30 insulation has varying thicknesses depending on the type of material and in what form it comes. The R-value of insulation refers to heat transference, or how quickly heat travels through the material.

www.reference.com/world-view/thick-r-19-insulation-1e08dc73b21ddcbb

The thickness of R-19 insulation is 6.25 inches. R-value measures how effectively a specific kind of insulation blocks the transfer of heat. The two main types of insulation are batt and rolled fiberglass insulation.

www.reference.com/article/insulation-r-value-chart-5d335e96170fe7c

An insulation R-value chart refers to a table that lists the levels of insulation recommended for different climates and for different areas in the home, according to Energy Star. Some R-value tables detail the specific R-values and other properties of different insulat...

www.reference.com/article/insulation-types-r-values-38f3d2198ed42b52

Numerous types of insulation, including blanket, concrete block, foam board, loose fill and sprayed foam, are available as of 2015. Each type of insulation comes in a variety of R-values, which measure the insulating material's resistance to heat flow.

www.reference.com/article/insulation-r-values-1ad5f032adf4c30c

Insulation type, whether for attics or walls, and the material it is made from determine the R-value of the installation. The R-value measures how well the insulation resists the flow of heat, explains Today's Homeowner. When looking for the most heat resistance, choose...

www.reference.com/article/uses-thick-insulation-foam-sheets-f1252b93534bdfb4

Applications for thick insulation foam sheets include use as exterior insulation, either installed before backfilling a structure's foundation or over a structure's exterior sheathing, as well as an interior installation in finished basements. Typically, building codes ...