DRAFT GreenPoint Rated Existing Home Rating Manual version 6.0 | Page 48

D

Structural Frame and Building Envelope VERIFICATION Measure D8.1 Field Verification: The Rater will conduct field compliance verification and take photos of the detached garage. Measure D8.2 Field Verification: The Rater will complete one of the following: ? ? For the garage fan, the Rater will conduct field compliance verification of the garage fan’s installation and runtime (either continuous or linked to an occupant sensor, light switch, or other controller) or of the detached garage. The Rater will take representative photos of applicable elements. For the tightly sealed air barrier, verification of the airtight seal should be accomplished with a blower door test that depressurizes the home to -50 pascals (with respect to outdoors) and verifies that lack of air movement from the garage to the home by using smoke sticks or a fog machine as a diagnostic tool. This test must be completed by an individual who has been trained in the use of the equipment and has certification associated with its use, such as a Building Performance Institute (BPI) Business Analyst (BA) rater or a Home Energy Rating System (HERS) rater.

Documentation: The Rater will complete one of the following: ? ? For the garage fan, the Rater will collect documentation of control, runtime, and air changes per hour. For the tightly sealed air barrier, the Rater will collect test results of a blower door test with smoke/fog tools to verify the lack of air movement from the garage to the home, and an Accountability Form from a qualified professional that this measure has been met.

INTENT To reduce the potential for garage pollutants to enter the house.

D9.

STRUCTURAL PEST AND ROT CONTROLS

CRITERIA FOR QUALIFICATION Up to two points of credit are available for installing structural pest controls with the goals of reducing opportunities for rot, using building materials that deter or do not attract pests, and increasing the distance between the soil and the home’s framing materials, as follows: D9.1. All Wood Located At Least 12 Inches Above the Soil (1 Point)

This measure applies to all wood, including siding, trim, and structural members. The distance between the sill/sole plate and the finished soil grade after foundation plant landscaping and mulching should be at least 12 inches. Assume at least three inches of mulching. D9.2. Wood Framing Treated With Borates or Factory-Impregnated, or Wall Materials Other Than Wood (1 Point) At least one of the following must be true:

42

GreenPoint Rated Existing Home Rating Manual Version 6.0, September 2013 © Build It Green