CEN/TC 128/SC 9/WG 2 - Rooflights

This document provides product category rules (PCR) for Type III environmental declarations for rooflights and roof hatches to be used on upstands in flat and slightly inclined roofs.
This document complements the core rules for the product category of construction products as defined in [1]. This document is used in conjunction with [1] and does not replace it.
The core PCR:
—   defines the parameters to be declared and the way in which they are collected and reported;
—   describes which stages of a product’s life cycle are considered in the EPD and which processes; are to be included in the life cycle stages;
—   defines rules for the development of scenarios;
—   includes the rules for calculating the Life Cycle Inventory and the Life Cycle Impact Assessment underlying the EPD; including the specification of the data quality to be applied;
—   includes the rules for reporting the predetermined, environmental and health information that is not covered by Life Cycle Assessment (LCA) for the product, construction process(es) and construction service(s), as relevant;
—   defines the conditions under which construction products can be compared based on the information provided by EPD.
For the EPD of construction services the same rules and requirements apply as for the EPD of construction products.
This document applies to rooflights and roof hatches with upstands as well as rooflights and roof hatches supplied without an upstand, intended for use on upstands. The rooflights and roof hatches may be individual or continuous types.
The main purpose of rooflights is to transmit daylight into the building. Roof hatches provide mainly access to the roof. But beside their primary purposes these products can be used for different additional functions e.g.
—   natural ventilation;
—   fire compartmentation and smoke control;
—   emergency exit;
—   natural smoke and heat exhaust ventilation in accordance with [2].
So the functions and the products are not fixed linked to each other.
Construction products covered by these complementary product category rules are:
—   individual rooflights and individual rooflights with upstands;
—   roof hatches;
—   continuous rooflights and continuous rooflights with upstands.