DRAFT GreenPoint Rated Existing Home Rating Manual version 6.0 | Seite 50

E. EXTERIOR
E1. ENVIRONMENTALLY PREFERABLE DECKING

CRITERIA FOR QUALIFICATION This measure is available for partial credit based on the percentage of decking that meets the specific criteria of the measure. Two points of credit may be given for using one of the following types of materials in all non-structural deck applications (including decking planks, stair treads, stair risers, and railings): ? ? Reclaimed materials. Locally produced materials, where documented evidence exists that 90% of the weight or volume of the material is extracted, processed, or manufactured within 500 miles of the home. This does not apply to materials that are generally considered to be environmentally unpreferable in their extraction, manufacture, installation, use, or end of life. This does not apply to common materials that typically have always been local throughout the state, such as sand, cement, and aggregate. Build It Green will review the use of these criteria. Recycled-content lumber, where the plastic portion of recycled-content lumber contains at least 50% post-consumer recycled content. Post-industrial (pre-consumer) recycled content is counted at half the rate of post-consumer recycled content. FSC-certified wood material.

? ?

VERIFICATION Field Verification: The Rater will conduct field compliance verification and take photos of the decking. Documentation: The Rater must collect documentation as necessary for selected material installed indicating reclaimed material, brand and recycled content (via product specification), locally sources material, or FSC-certified materials (via invoice and unbroken chain of custody documentation). INTENT To reduce pressure on landfills and reduce the need to harvest new resources by using recycled content materials.

E2.

RAIN SCREEN WALL SYSTEM

CRITERIA FOR QUALIFICATION This measure is available for partial credit based on the percentage of exterior walls that meet the specific criteria of the measure. Two points of credit may be given if siding has been installed with three-eighths of an inch of air space present between the siding and the drainage plan or sheathing. The air space must be created by spacer strips/clips, a drainage mat, or a specifically designed rain screen system that allows for effective ventilation of the wall, including provisions for flashing around wall penetrations (such as windows and doors) and continuous ventilation strips at the bottom and top of the wall. GreenPoint Rated Existing Home Rating Manual Version 6.0, September 2013 © Build It Green 44