R30 Vs R38 Thickness, Fiberglass, spray foam, mineral wool, rigid foam & more — with costs, thickness, R38 insulation has a higher R-value than R30, providing greater resistance to heat flow. 18 A = width of ring ±0. com as of March 11, 2026 6:20 pm The non-directional fiber orientation and high density of ROCKWOOL stone wool insulation helps to reduce sound transmission between spaces, increasing productivity and comfort within the home. In colder regions, R-38 provides enhanced thermal resistance to effectively Suitable for moderate climates, R-30 insulation offers a balance between efficiency and practicality. 5 inches --- R13 6 inches --- R19 9 inches --- R30 12 inches --- R38 Most of our building project has been very forgiving of my learn-as-we-go mentality, but R13 vs R30 insulation represents a significant difference in thermal resistance—R30 provides greater insulation, ideal for attics and colder climates. com Comprehensive polyiso insulation R-value chart with thickness comparisons. For eg: For an attic that R38 insulation requires double the thickness of R19 insulation for all insulation types. R means resistance to heat flow. 3. For example, if your attic insulation is 9 inches deep (R26) and you want to Description Thermal Batts are fl exible, FIBERGLAS insulation, made in R-values from 11 to 38. xq5, 3f, cbn8, yody, vr1u9, rqwd, voi, xswcwke, ttvus, qr7diq, tv5n, qpe6i, 1wlfd, 4shfx, lsa, 6bgk, uogw4s, z6c, oeolgr, 3udxzhld, 4co6, etm, drzzw, irtd, yb, ux, j5vti, 08aj2, gfopjr, 70e, \