No Indoor airPLUS

As the end of the construction process approaches, we began to look over each program we are attempting to qualify for. This process involved a detailed review of each program’s checklist and re-reading of the detailed explanations that accompany them. 

Each program has differing requirements for qualifying. LEED® for Homes has pre-requisites for various categories that must be achieved before any points can be attained in that category. The NAHB Green Building Program has a minimum number of points that are required to achieve a rating in each category and all categories must have the same rating to achieve that overall level of rating or certification. The ENERGY STAR® and Indoor airPLUS programs require that each item on their checklist be achieved in order to receive the rating, The Builder’s Challenge program is the least restrictive and has many items that are recommended as best practices but have exceptions based on local practices.  

Prior to starting construction on the house, each program checklist was used to develop specifications for each phase of the process. If an item on a checklist was unclear, we referred to the detailed explanation for clarification. Our initial reading of “Bituminous membrane installed at valleys & penetrations” which is item 1.9 in the Water-Managed Roof Assemblies on the Indoor airPLUS checklist, seemed to be satisfied by our standard practice of totally covering the entire roof of the house with UL 15# asphalt saturated felt and then installing metal flashings in the valleys. While conducting our review of this item, the term “self-sealing” was included in the detailed description. We considered reworking the roofing to comply, but decided not to because of cost and weather conditions. 

While we are still on track to quality for LEED for Homes – Gold certification, NAHB Green Building Program – Gold certification, ENERGY STAR, and the U.S. Department Of Energy’s – Builder’s Challenge programs, we regret the loss of not qualifying for the U.S Environmental Protection Agency’s – Indoor airPLUS rating.

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