Officially launched in 2013, the mandatory implementation of LEED v4 took effect in October 2016. The long transition allowed the industry the opportunity to prepare to meet the increased rigor of the program.
The Materials and Resources category is one that received a major overhaul in the new version. Instead of giving a building material credit for one attribute, such as recycled content, the revamped category shifts consideration to the entire life cycle of the building. Now, points are awarded for HPDand EPD- issued products. As such, material producers had to begin to look at the products they produce and their manufacturing process from cradle-to-grave or cradle-to-cradle and then to transparently share this information with building designers.
CarbonCure’s Robert Niven and Christie Gamble explained the Health Product Declaration (HPD) and its role in product Life Cycle Analysis (LCA) in the article Health Product Declarations: Essential to Your Bottom Line in SMART|dynamics of masonry v2.4.
Like the Environmental Product Declaration (EPD), demand for this document was first promoted through programs such as LEED v4 and by a group of cutting edge architectural firms paving the way in material selection based on transparency. The article explains that an HPD is a material transparency document that discloses any health hazards that may be associated with chemical constituents contained within a building product.
Those keeping up with discussions on EPD know that to create an EPD, one needs to conduct an LCA based upon a Product Category Rule (PCR) that was developed through the industry in compliance with ISO standards. While an EPD measures environmental impacts (such as CO2 emissions and water usage), the HPD discloses potential health hazards found in a product (such as carcinogens and toxins). Compared to the EPD, creating an HPD is a relatively simple and inexpensive process.
Through their experience as pioneers in green technology and as part of the HPD Manufacturer’s Advisory Panel, Niven and Gamble offer manufacturers guidelines on the process of creating an HPD, as well as information regarding proprietary issues and legal implications.
The HPD discloses potential health hazards found in a product