Laserfiche WebLink
4 - 0.40 0.60 NR 38 13 5 19 10/13 10,2fl 10/13 <br /> except <br /> Marine <br /> 5 and 0.35 0.60 NR 38 19 or 13 30' 10 / 13 10, 2 ft 10 / 13 <br /> Marine 13 +5g <br /> 4 <br /> 6 0.35 0.60 NR 49 19 or 15 30 10/13 10,4ft 10/13 <br /> 13 +5g <br /> 7and8 0.35 0.60 NR 49 21 19 30 10/13 10,4ft 10/13 <br /> For SI: 1 foot = 304.8 mm. <br /> NR = No requirement. <br /> a. R- values are minimums. U- factors and SHGC are maximums. R -19 shall be permitted <br /> to be compressed into a 2 x 6 cavity. <br /> b. The fenestration U- factor column excludes skylights. The SHGC column applies to all <br /> glazed fenestration. <br /> c. The first R -value applies to continuous insulation, the second to framing cavity - <br /> insulation; either insulation meets the requirement. <br /> d. R -5 shall be added to the required slab edge R- values for heated slabs. <br /> e. There are no SHGC requirements in the Marine zone. <br /> f. Or insulation sufficient to fill the framing cavity, R -19 minimum. <br /> g. "13 +5" means R -13 cavity insulation plus R -5 insulated sheathing. If structural <br /> sheathing covers 25 percent or less of the exterior, insulating sheathing is not required <br /> where structural sheathing is used. If structural sheathing covers more than 25 percent of <br /> exterior, structural sheathing shall be supplemented with insulated sheathing of at least R- <br /> 2. <br /> h. The ceiling insulation alternative in Section 402.1.1.1 can be used as an equivalent <br /> alternative for R -30." <br /> SECTION 4. Ordinance No. 09 -48, as amended, is further amended by amending <br /> paragraph (6) of item (6) of Section 3 to read as follows: <br /> "6. For compliance with Subsection 1.4, a cool roof shall have an infrared <br /> [emi— a nee] emissivity of no [mere] less than 0.75 when tested in accordance with <br /> ASTM E -408 and a high solar reflectance. Alternatively, the corresponding Solar <br /> Radiance Index (SRI) for a cool roof can be used. The manufacturer's test results <br /> shall be acceptable for compliance. A cool roof has both a light color (high solar <br /> reflectance) and a high [cmittanee] emissivity (can reject heat back to the <br /> environment). White painted surfaces and other smooth white coatings typically <br /> meet these requirements. Surfaces that do not meet the requirements include <br /> unpainted metal and metalized roof coatings (silver appearance)." <br /> SECTION 5. Ordinance No. 09 -48, as amended, is further amended by amending item <br /> (12) of Section 3 to read as follows: <br /> "(12) Amending Section 403. Section 403 is amended by adding Section 403.7 <br /> to read: <br /> 2 <br /> • <br />