b'February 22, 2024 Contribution of Air-film resistances [(m2.K)/W]RoofExternal WallInternal WallWint.Sum.Wint.Sum.Wint.Sum. Outside Air Film0.040.040.040.040.120.12 Inside Air Film0.110.160.120.120.120.12Table 2: Delta Panels EPS-FR Core (SL grade) insulated core panelTotal R-value - External Roof, External Wall & Internal Wall Total R-value [(m 2 .K)/W] (Summer/Winter) &AustraliaSystem U-value [W/(m 2 .K)] (Summer/Winter) EPS (SL)Thickness5075100125150175200250 (mm) R (Sum.) 1.36 1.85 2.43 3.02 3.56 4.15 4.68 5.27U (Sum.) 0.74 0.54 0.41 0.33 0.28 0.24 0.21 0.19External RoofR (Wint.) 1.38 1.90 2.52 3.13 3.69 4.31 4.88 5.49U (Wint.) 0.72 0.53 0.40 0.32 0.27 0.23 0.20 0.18R (Sum.) 1.32 1.81 2.40 2.98 3.52 4.11 4.64 5.23U (Sum.) 0.76 0.55 0.42 0.34 0.28 0.24 0.22 0.19External WallR (Wint.) 1.39 1.91 2.53 3.14 3.70 4.32 4.89 5.50U (Wint.) 0.72 0.52 0.40 0.32 0.27 0.23 0.20 0.18R (Sum.) 1.40 1.89 2.48 3.07 3.60 4.19 4.73 5.31U (Sum.) 0.71 0.53 0.40 0.33 0.28 0.24 0.21 0.19Internal WallR (Wint.) 1.47 1.99 2.60 3.22 3.78 4.40 4.96 5.58U (Wint.) 0.68 0.50 0.38 0.31 0.26 0.23 0.20 0.18 Faithfully,Cameron Chick BE(Hons), Ph.D., GC.Com.(Mktg), M.AIRAH, RPEQ DirectorAcronem Consulting Australia Pty LtdRegistered Professional Engineer -Qld. (Structural): 15370 Vic. (Civil): PE00009672024 Acronem Consulting Australia Pty Ltd. All rights reserved.Page 2 of 2'