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• Residential Energy <br /> Page 2 of 3 <br /> Foundation insulation. Foundation of basement and Interior foundation insulation requirements. An <br /> crawl space walls and the perimeter of slab-on-grade insulation assembly installed on the interior of the <br /> floors must comply with this section. Insulation materials foundation walls shall meet the following provisions: <br /> shall be installed according to manufacturer's installation <br /> specifications. Adding additional insulation to increase 1. Masonry foundation walls shall be drained through <br /> R-values or adding an additional vapor retarder to the masonry block cores to an approved interior <br /> foundation wall assemblies, other,than those required in drainage system. <br /> this section, is prohibited. 2. If a frame wall is installed, it shall not be in direct <br /> contact with the foundation wall unless the interior <br /> Foundation wall and rim joist area thermal insulation side of the foundation wall has been <br /> requirements. The insulation layer must be a minimum waterproofed. <br /> R-10. 3. Comply with the interior air barrier requirements. <br /> 4. Comply with all other requirements <br /> Exception: In the Southern Zone, the foundation and rim <br /> joist area insulation may be reduced to a minimum of an Rigid interior insulation. Rigid interior insulation shall <br /> R-5 if: comply with the following: <br /> 1. The insulation is located on the exterior or is 1. Dampproofing, waterproofing or a water repellent <br /> integral to the foundation wall; and shall be applied to the exposed above grade <br /> 2. An additional R-5 insulation is added to the foundation walls or a layer of damppoorfing or <br /> minimum attic R-value level; and waterproofing shall be installed on the entire <br /> 3. The heating system meets the minimum efficiency inside surface of the foundation wall. <br /> ratings in the table below; and 2. Installation requirements: <br /> 4. A minimum of a 6 inch energy heel is used for the a. Must be in contact with the foundation wall <br /> roof framing and/or truss system. surface; <br /> b. Vertical edges shall be sealed with acoustic <br /> HVAC System Minimum Efficiency Requirement to sealant; <br /> Qualify for R-5 Exterior Insulation c. All interior joints, edges and penetrations shall <br /> in the Southern Zone be sealed against air and water vapor <br /> Heating System Type Minimum Efficiency penetration; <br /> Rating d. Horizontally continuous acoustic sealant <br /> Furnace, Gas or Oil Fired 90% exists between the foundation wall and the <br /> Boiler, Gas or Oil Fired 85% insulation at the top of the foundation wall; <br /> and <br /> Exterior foundation insulation requirements. An e. Horizontally continuous acoustic sealant <br /> insulation assembly installed on the exterior of the exists between the basement floor and the <br /> foundation walls and the perimeter of slabs-on-grade: bottom insulation edge. <br /> 3. The insulation shall not be penetrated by the <br /> 1. shall be of water-resistant materials manufactured placement of utilities or by fasteners or connectors <br /> for its intended use; used to install a frame wall. <br /> 2. shall be installed according to the manufacturer's <br /> specifications; <br /> 3. shall have a rigid, opaque and weather-resistant <br /> protective covering to prevent the degradation of <br /> the insulation's thermal performance. The <br /> protective covering shall cover the exposed <br /> exterior insulation and extend a minimum of six <br /> inches below grade. The insulation and protective <br /> covering system shall be flashed. ■■ ■I ', <br /> • • • • • • <br /> • • • • • • • <br /> • • 0 • • • ff <br />