Division 7 Ebook Page 403 Fiberglass, Exterior Wall, 07 21 16

EnergyComplete Thermal Insulation 2.2 SYSTEM DESCRIPTION A. General: System consists of an air infiltration barrier applied to joints between materials of the exterior and interior wall framing to eliminate air infiltration into the building and the installation of insulation to reduce thermal transmission. NOTE TO SPECIFIER: Delete materials and thicknesses not required from the following paragraphs. R values indicated below are for the insulation material alone. The expected performance of the whole wall assembly needs to be calculated taking the R value of all wall components into account. Building codes will dictate the R value performance requirements for the exterior walls. Depending on applicable building codes, climate zone where the project is located, and framing material used, additional continuous insulation on the exterior side of the framing may be required. This is particularly the case where metal studs are used for framing. Consult the applicable building codes for the project location, IECC, and ASHRAE 90.1 to determine the required thermal resistance for the exterior walls. Be sure that the desired R-values are indicated on the drawings and that insulation is not indicated by thickness alone. 2.3 MATERIALS A. Glass-Fiber Loose-Fill Insulation: Maximum flame-spread and smoke-developed indexes of 5, per ASTM E 84 and as follows: 1. ASTM C 764, Type I for pneumatic applications. 2. ASTM C 764, Type II for poured applications. 3. Minimum R-Value, Cavity Depth 3-1/2 Inches: R-14, (1.3 pcf density). 4. Minimum R-Value, Cavity Depth 3-1/2 Inches: R-16, (2.5 pcf density). 5. Minimum R-Value, Cavity Depth 5-1/2 Inches: R-22, (1.3 pcf density). 6. Minimum R-Value, Cavity Depth 5-1/2 Inches: R-24, (2.3 pcf density). 7. Minimum R-Value, Cavity Depth 7-1/4 Inches: R-30, (1.4 pcf density). 8. Minimum R-Value, Cavity Depth 7-1/4 Inches: R-32, (2.4 pcf density). 9. Minimum R-Value, Cavity Depth 9-1/4 Inches: R-38, (1.4 pcf density). 10. Minimum R-Value, Cavity Depth 9-1/4 Inches: R-41, (2.4 pcf density). 11. Minimum R-Value, Cavity Depth 11-1/4 Inches: R-46, (1.4 pcf density). 12. Minimum R-Value, Cavity Depth 11-1/4 Inches: R-50, (2.4 pcf density). B. Batt Insulation: 1. Batt Insulation, Unfaced: ASTM C 665, Type I, preformed glass fiber batt type, unfaced. 2. Batt Insulation, Kraft Faced: ASTM C 665, Type II, Class C preformed glass fiber batt type, Kraft paper faced one side. 3. Batt Insulation, Foil Faced: ASTM C 665, Type II, Class B preformed glass fiber batt type, foil faced one side with maximum flame/smoke properties of 75/450 in accordance with ASTM E84. 4. Minimum R-Value, Thickness 3-1/2 Inches: R-11. 5. Minimum R-Value, Thickness 3-1/2 Inches: R-13. 6. Minimum R-Value, Thickness 3-1/2 Inches: R-15. 7. Minimum R-Value, Thickness 5-1/2 Inches: R-21.5. 8. Minimum R-Value, Thickness 5-1/2 Inches: R-18, using R-19 6-1/4 inch batt compressed. 9. Minimum R-Value, Thickness 7-1/4 Inches: R-24, using R-25 8 inch batt compressed. 10. Minimum R-Value, Thickness, 7-1/4 Inches: R-28, using R-30C 8-1/2 inch batt compressed. 11. Minimum R-Value, Thickness 9-1/4 Inches: R-29, using R-30 10 inch batt compressed. 12. Minimum R-Value, Thickness 9-1/4 Inches: R-36, using R-38C 10 inch batt compressed. 13. Minimum R-Value, Thickness 11-1/4 Inches: R-37, using R-38 12 inch batt compressed. 14. Thermal Resistance: As indicated on the Drawings. 15. Batt Size: Friction fit of sizes to fit stud spacing. C. Foam Sealant: 1. Material: High-efficiency foam sealant. 2. Water Vapor Permeance: a. ASTM E 96 (dry cup): Greater than 2 perm. b. ASTM E 96 (wet cup): Greater than 30 perm 3. Dimensional Stability: ASTM D 2126, maximum 1.0% linear change at -40F, ambient RH after 2 weeks max 2.0% linear change at 100F, 97% RH after 2 weeks.

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