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2. Seal partition walls at top and bottom to stop free air movement. <br />3. Seal around chimney, plumbing, and electrical chases at top and bottom to stop free <br />air movement. <br />4. Seal openings at the sill plate /band joist to stop free air movement. <br />C. Prevent convective heat loss which results from large direct openings between the interior <br />and exterior of the house. <br />1. Replace missing or broken glass, missing windows, missing doors. <br />2. Seal holes in ceilings, which communicate directly with the attic. <br />3. Seal holes in walls and floors, which communicate directly with the exterior of the <br />house, the basement /crawlspace, or with the kneewall attic. <br />4. Seal unused flue openings and fireplaces <br />5. Construct a removable door for fireplaces, which do not have an operable damper, <br />and are used occasionally. <br />6. Check to insure dryer vents are non - combustible, clean and have no loops in vent <br />hose. <br />7. Seal or damper dryer vents, kitchen exhaust fans, window air conditioners, utility <br />penetrations etc. to the outside of the building shell. <br />8. All kitchen and bath fans currently venting into the attic must be vented to the <br />outdoors through roof fittings. Fans without operating back draft dampers must be <br />repaired, equipped with back draft dampers, or the fan must be replaced. Check new <br />fans for proper damper operation. <br />9. All exhaust fans must be repaired or replaced if not working, if replaced it must be <br />vented to the outdoors. <br />10. If there is a working re- circulation fan it may be replaced with one that vents <br />outdoors. <br />11. All gas ranges must have an exhaust fan vented to the outdoors. <br />12. Any kitchen range vents that are repaired or replaced must be vented with rigid pipe. <br />D. A continuous ground cover with a minimum thickness of 6 mil. will be installed in enclosed <br />crawlspaces to prevent the diffusion of soil moisture into the building materials. <br />TASK 2: INSULATE AND VENT ATTIC <br />A. Insulation will be installed in attic areas located directly above heated areas as follows: <br />Table 1: <br />Recommended Post - Weatherization Attic Insulation Values <br />Space <br />Heating <br />Fuel <br />REGION 1 <br />(West, Central, <br />Northeast <br />REGION 2 <br />(Coastal) <br />Electric Heat Pump <br />R -38 <br />R -30 <br />Oil <br />R -38 <br />R -30 <br />Natural Gas <br />R -38 <br />R -30 <br />Propane (Butane) <br />R -38 <br />R -38 <br />Electric Resistance <br />R -38 <br />R -38 <br />Reasons for not being able to insulate to the standards as specified in Table 1 must be <br />documented in the client file. <br />B. A three inch (3 -in) minimum clearance from insulation or other combustible materials must be <br />maintained with a permanent blocking material around all chimneys and flues. A three (3) <br />inch minimum clearance from cellulose and paper backed fiberglass insulation must be <br />maintained with a permanent blocking material around recessed light fixtures, transformers, <br />furnaces, and any other heat producing device. Neither insulation nor blocking material may <br />cover these devices. Chimney chases must be sealed with metal flashing and high <br />temperature caulk. <br />C. Permanent blocking material will be installed around trap doors or scuttles so as to restrain <br />insulation from falling through these openings. The attic side of trap doors, scuttles, and pull <br />Solicitation No. 2011WXSSP <br />Pape 8 of 53 <br />Attachment number 1 <br />F -4 Page 120 <br />