Measuring The R-value of Reflective Insulation Vs. Fiberglass
FACT #1: R-value is the measurement of a material's ability to stop heat transfer.
FACT #2: The R-values of reflective insulation and mass insulation are based on the same fundamental equation: The ability to stop heat transfer.
FACT #3: Reflective Insulation is a system that reduces the transfer of heat across air space by the use of two surfaces having high thermal reflectance and low emittance (typically metalized film) + an inner substance + trapped airspaces.
FACT #4: The R-value of reflective insulation is the measurement of the system rather than a measurement of just the product. Measuring the R-value of the system (a real-world application) is a truer measurement vs. a measurement of the product only. For example, what good is the posted R-value of fiberglass given that once installed in an environment that includes any moisture it loses R-value? Virtually all real-world environments include some humidity. Unlike fiberglass the R-value of Prodex Total insulation is NOT affected by humidity.
U.S. Department of Energey: "Reflective insulation incorporates radiant barriers -- typically highly reflective aluminum foils -- into insulation systems that can include a variety of backings, such as Kraft paper, plastic film, polyethylene bubbles, or cardboard, as well as thermal insulation materials."
FACT #5: Prodex Total 5M Plus has an *R-value of 17 (one layer) 25 (two layers). Click for real-world test parameters (technical brochure).
0.2" inch (5mm) - Closed cell polyethylene foam covered on both sides with reinforced reflective foil facing.
Reflective Insulation For Sale
Prodex Total 5M Insulation - R 17. One solution to Heat, Cold and Condensation - No other insulation protects you from these three conditions like Prodex Total. 5mm (0.2"inch) closed cell polyethylene foam covered on both sides with reinforced foil facing.
New Prodex Total White Insulation - R 15.3. 5mm (0.2" inch) closed cell polyethylene foam with reinforced foil facing on one side and plastic white finish film on the other side.
New Prodex Total 10M - R22. Twice as thick as regular Prodex Total. 10mm (0.4" inch) closed cell polyethylene foam covered on both sides with reinforced foil facing.
A must have metal building insulation and vital component in a complete home insulation system. If you select fiberglass for your metal building or pole barn insulation, you will have moisture issues (typically hidden behind facing), Loss of R-value (consequence of the moisture) and radiant heat gain from the sun.
House Reflective Insulation uses
Updated July 11, 2019