MARYLAND PRACTICE DRAFT BUILDING ENVELOPE IMPROVEMENT (No.) 672 DEFINITION ASABE ANSI/ASAE S401.2, Guidelines for Use of Thermal Insulation in Agricultural Modification or retrofit of the building envelope Buildings. of an existing agricultural structure. Insulation and retarders PURPOSE Select insulation material on temperature This practice may be applied as part of a extremes, moisture conditions in the building conservation management system to reduce and expected UV light exposure. energy use by regulating heat transfer. Select insulation or covering materials that are durable, moisture resistant, non-toxic to CONDITIONS WHERE APPLIES humans or livestock and consistent with This practice applies to any agricultural facility applicable Federal Drug Administration which is climate controlled at least part of the regulations. time with a completed energy analysis that Ensure insulation materials and vapor complies with the guidelines for a Type 2 retarders exposed to the interior of the building energy audit per the American Society of will meet specifications described in Agricultural and Biological Engineers (ASABE) ANSI/ASABE S401.2. S612. The audit will have at a minimum addressed the major activities of ventilation, air Insulation materials not meeting the heating and air cooling that exist in the requirements specified in the paragraph building. and any insulation materials located directly adjacent to electrical panels, devices, and CRITERIA welding operations must be separated from the interior of the building by an ignition or thermal Implement recommendations of the Type 2 barrier in accordance with ANSI/ASABE On-Farm Energy audit as they pertain to S401.2. building envelope improvement. Insulation must be compatible with electrical Seal cracks with an appropriate sealant wiring of the structure. according to audit recommendations. Refer to the American Society of Heating, Refrigerating Install insulation according to manufacturer’s and Air conditioning Engineers (ASHRAE) recommendations and in a manner that will Handbook - Fundamentals for appropriate maintain the thermal properties of the sealant material and application methods. insulation. Ensure the building envelope meets all Install insulation so that a reasonably uniform applicable building codes. Ensure that insulation exists over the entire insulated values of the improved walls and ceiling of the area. building envelope are equal to or less than the Install a vapor retarder with the insulation that U provided in Table 1 and Figure 1 of provides a permanent resistance to water
MARYLAND DRAFT BUILDING ENVELOPE IMPROVEMENT (No.) 672 DEFINITION Modification or retrofit of the building envelope of an existing agricultural structure. PURPOSE This practice may be applied as part of a conservation management system to reduce energy use by regulating heat transfer. CONDITIONS WHERE PRACTICE APPLIES This practice applies to any agricultural facility which is climate controlled at least part of the time with a completed energy analysis that complies with the guidelines for a Type 2 energy audit per the American Society of Agricultural and Biological Engineers (ASABE) S612. The audit will have at a minimum addressed the major activities of ventilation, air heating and air cooling that exist in the building. CRITERIA Implement recommendations of the Type 2 On-Farm Energy audit as they pertain to building envelope improvement. Seal cracks with an appropriate sealant according to audit recommendations. Refer to the American Society of Heating, Refrigerating and Air conditioning Engineers (ASHRAE) Handbook - Fundamentals for appropriate sealant material and application methods. Ensure the building envelope meets all applicable building codes. Ensure that of the improved walls and ceiling of the building envelope are equal to or less than the U values provided in Table 1 and Figure 1 of ASABE ANSI/ASAE S401.2, Guidelines for Use of Thermal Insulation in Agricultural Buildings. Insulation and retarders Select insulation material on temperature extremes, moisture conditions in the building and expected UV light exposure. Select insulation or covering materials that are durable, moisture resistant, non-toxic to humans or livestock and consistent with applicable Federal Drug Administration regulations. Ensure insulation materials and vapor retarders exposed to the interior of the building will meet specifications described in ANSI/ASABE S401.2. Insulation materials not meeting the requirements specified in the paragraph and any insulation materials located directly adjacent to electrical panels, devices, and welding operations must be separated from the interior of the building by an ignition or thermal barrier in accordance with ANSI/ASABE S401.2. Insulation must be compatible with electrical wiring of the structure. Install insulation according to manufacturer’s recommendations and in a manner that will maintain the thermal properties of the insulation. Install insulation so that a reasonably uniform insulation exists over the entire insulated area. Install a vapor retarder with the insulation that provides a permanent resistance to water