Every clca article tagged “PCR” — 11 technical pieces covering the topic from methodology, standards interpretation and practical application angles.
11 articles
An EPD is read in five steps: the cover data, the declared unit, the module scope, the GWP rows and the comparability conditions. Red flags, and moving EPD data into a building LCA.
Read moreAn EPD is valid for five years from its issue date; it is updated earlier if product, process or energy source changes the results significantly. What happens when an EPD expires, which changes call for re-verification and how to plan the five-year maintenance cycle.
Read moreAggregate is one of the lowest-carbon construction materials per tonne, yet its volume makes it visible in a building's balance. An aggregate EPD is prepared with a 1 tonne declared unit; diesel, electricity and transport distance set the result.
Read moreAn insulation EPD follows the EN 16783 PCR: the declared unit is the quantity of 1 m² of product that provides 1 m²K/W of thermal resistance. Hotspots of glass wool, stone wool and EPS, the A1–A3 order of magnitude and verifier pitfalls.
Read moreA concrete EPD is prepared under EN 15804+A2 with the complementary PCR EN 16757: a 1 m³ declared unit, a mix per strength class, the cement EPD as an input, B1 carbonation and C/D scenarios.
Read moreAn EPD is obtained in six steps: PCR selection, data collection, LCA model, EPD document, independent verification and publication by a programme operator. Typically 6–14 weeks; the cost has four components.
Read moreThe standard that explains why an EPD needs a program operator, why it cannot exist without a PCR, and what separates Type I, II and III.
Read moreEN 15804+A2 is the core PCR, but category-specific PCRs (EN 16783, EN 16757, EN 16908…) may be mandatory. How do you make the PCR selection decision?
Read moreAn EPD presents a product’s environmental performance in a standard format, independently verified. What it says, what it does not, and why buyers ask for one.
Read moreOne is a calculation, the other a document. Every EPD has an LCA behind it, but not every LCA becomes an EPD — and the difference lies in who it is prepared for.
Read moreThe calculation behind an EPD is an LCA, but not a free one: the PCR dictates what you calculate and how. The flow from rule set to result table.
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