MOISTURE CONTROL
The Rater will look for areas that could potentially create moisture problems in the future by inspecting the home’s envelope, which includes the outer walls, ceiling, and windows. Since the window manufacturer’s labels are in place at this point, the Rater makes notes to ensure that their values are as required by code and that they relate to what was specified in the Manual J. Areas behind bathtubs located near an exterior wall are noted to make sure that a waterproof backing will be used to avoid moisture issues caused by changes in temperature.
INITIAL INSPECTION
NOTE: Although moisture management is not a factor in energy efficiency, ensuring against moisture problems is included in BUILT TO SAVE™ inspections as part of its “whole-house” approach to providing a healthy home environment.
VENTILATION
Tight construction is required for superior energy efficiency, and as the home becomes tighter, it is very important that a proper fresh air system is installed to allow the home to breathe. A visual inspection looks for properly placed ventilation systems, which is especially important if the insulation being used is spray foam due to its maximum sealing characteristics. A variety of humidity controlling devices are available on the market today that can greatly enhance the comfort levels of a home. NOTE: Proper mechanical ventilation is key to ensuring the quality of indoor air. Ventilation is nothing more than replacing stale air with fresh air and is critical for tightly constructed homes that can trap dust, pollen, and unhealthy air that results from day-to-day activities like cooking, bathing, and even the occupants’ breathing.
DUCTS & AIR REGISTERS
The Rater inspects the HVAC duct system, looking for areas that are poorly sealed and connected. Mastic is an inexpensive sealant that should be used generously over taping at all the seams for maximum protection. Simply using foil tape is not acceptable since heat will cause the tape to fall off and allow air to escape into the attic. The ducts, where they connect to vents and registers in the ceiling, are inspected to make sure they will connect properly.
FINAL INSPECTION
NOTE: A properly designed duct system, a function of the HVAC contractor, is key to making sure every room of the home gets equal air with equal pressure. Failure to equalize air flow will mean some rooms will be colder or hotter than others.
3
VERIFICATION OF FINAL RESULTS
A final review of the home’s specifications is made to verify that the home was built as was specified during the pre-construction stage, making note of items that can add or detract from the home’s projected ERI score. Additionally, the Final Inspection includes a Blower Door Test and a Duct Leakage Test to calculate the home’s ERI score.
14