LCA results & interpretation Cascadia Universal Series™ Fixed & Operable Windows and Doors
Scope and summary
- Cradle to gate
- Cradle to gate with options
- Cradle to grave
Application
The Cascadia Universal Series™ Casement Window offers a patented, high-performance fiberglass solution designed and manufactured in North America. It features an innovative, commercial-grade fiberglass frame that boasts up to 250% improved thermal performance compared to traditional aluminum windows. Casement windows consist of an operable sash frame around a transparent glazing unit, placed withing a fixed frame and equipped with hardware that allows the window to remain stationary in a closed position, and swing to open. The primary function of these fenestration systems is to create a façade between the building's interior and exterior, providing structural support and limiting thermal transfer through the building envelope.
Declared unit
The declared unit is one 600mm × 1,500mm (24in × 59in) casement window normalized to one square meter (1 m2) of fenestration assemblies (including frame and glass). Glazing beads and stops, sealants, gaskets, and other parts that retain or support the glazing are considered part of the framing assembly, not the glazing assembly. The declared product meets the relevant performance standards in ANSI/NFRC 100 per the identified sub-type.
Mass per declared unit:
Fenestration sub-type | Whole unit, kg | Frame only, kg | Glazing only, kg |
Casement window | 39.7 | 26.9 |
12.8 |
Manufacturing data
Reporting period: May 2022 – April 2023
Location: British Columbia, Canada
What’s causing the greatest impacts
All life cycle stages
Activities during the acquisition and preprocessing of raw materials are responsible for the majority of the impacts in each impact category. The upstream transportation stage is the next highest contributor to most impact categories including ozone depletion, smog, acidification, eutrophication, carcinogenics, non-carcinogenics, respiratory effects, and ecotoxicity. The manufacturing stage is the next highest contributor to global warming and fossil fuel depletion, due to fabrication and waste disposal activities.
Raw materials acquisition
Raw materials acquisition (A1) dominates the results for all impact categories. This module includes the raw materials acquired and preprocessed by the suppliers, including packaging. This stage makes up on average 80-85% of the total impacts for all impact categories. The glazing and frame are the two contributors calculated separately in the raw material acquisition stage. The fiberglass window frame generated 62.2% of total global warming results, whereas the glazing generated 37.8% of the total. The glazing unit contains two 4mm glass panes manufactured by an upstream supplier and sourced in North America. The frame unit contains fiberglass lineals, insulation, hardware, and packaging. During the production of these fiberglass lineals, glass fibers and catalyzed polyester resin are combined in a pultrusion process. The fiberglass lineals make up most of the weight of the frame unit, and they dominate the environmental impacts over the other frame components.
Transportation
Transportation (A2) of raw materials is the next highest contributor to most impact categories. This module includes raw material transportation from suppliers to the Cascadia manufacturing facility. Most of the ingredients sourced in North America are transported by semi-truck, whereas materials sourced from overseas use a mix of road transportation by semi-truck and sea transportation by ship.
Manufacturing
Manufacturing (A3) accounts for a notable contribution to impacts at around 20% for Global Warming Potentials (GWP) and Fossil Fuel Depletion. This module includes fabrication and the disposal of manufacturing waste. The fabrication process includes cutting the fiberglass, drilling, packaging, and cleaning. Fiberglass production waste, incoming raw material packaging waste, and other non-hazardous wastes are transported to a landfill, and recyclable packaging wastes are transported to a recycling facility or reused within the plant.
Sensitivity analysis
Sensitivity analyses were performed to check the robustness of the results where the highest potential environmental impacts were occurring. Since the bulk of impacts were attributed to raw materials acquisition, a sensitivity analysis was conducted to examine the sensitivity of the different available glazing configurations.
Global warming potential was evaluated for sensitivity since Cascadia is interested in the potential CO2-equivalent emissions of its products. The fixed window was evaluated as a worst case scenario, since it has the highest percentage of glazing and therefore provides the most conservative estimate of change. Choosing a triple-glazed product configuration rather than the double-glazed option resulted in a 32.9% increase in total life cycle impacts, highlighting the importance of this choice on total impacts.
How we're making it greener
Fiberglass is an ideal structural material for window and door frames, which is why Cascadia has used a proprietary, high glass-fiber-to-resin formula for more than a decade. Beyond its high strength and thermal efficiency, Cascadia's pultruded, thermoset fiberglass frames contain roughly 58% recycled content, low VOC's, and represent less embodied energy compared to vinyl or aluminum.
Not susceptible to decay or corrosion, fiberglass also expands and contracts with temperature change at roughly the same rate as the adjacent IGU. This extends the longevity of window seals and gaskets, reducing maintenance costs. Combined with a modeled lifespan of up to 80 years, fiberglass represents the future of high-performance windows and doors.
LCA results
Life cycle stage | A1 Raw material Supply | A2 Upstream transport | A3 Manufacturing |
Information modules:
|
(X) A1 Raw material supply | (X) A2 Transport | (X) A3 Manufacturing |
SM Single Score
Impacts per declared unit | 7.02E+00 mPts | 8.78E-01 mPts | 7.71E-01 mPts |
Materials or processes contributing >20% to total impacts in each life cycle stage | Upstream manufacturing of the fiberglass lineals and glass panels. | Transportation of raw materials to the Cascadia facility. | Product fabrication including cutting, drilling, packaging, and cleaning. |
TRACI v2.1 results per declared unit of Universal Series™ Casement Window (total)
Life cycle stage | A1 Raw material supply | A2 Transport | A3 Manufacturing |
Ecological damage
Human health damage
Additional environmental information
Impact category | Unit | |||
Fossil fuel depletion | MJ surplus Mega Joule, lower heating value Fossil fuel depletion is the surplus energy to extract minerals and fossil fuels. |
1.06E+02 | 2.84E+01 | 5.48E+01 |
Ecotoxicity | CTUe Comparative Toxic Units of Ecotoxicity Ecotoxicity causes negative impacts to ecological receptors and, indirectly, to human receptors through the impacts to the ecosystem. |
1.42E+02 | 3.76E+01 | 5.29E-01 |