Drywall / Plasterboard Sheet

Construction

Medium Confidence

Carbon Cost Index Score

42 kgCO₂e / per unit

Per kg

4.2 kgCO₂e / kg

Methodology v1.0 · Last reviewed 2026-04-08

Scope Breakdown

Scope	kgCO₂e	% of Total
Scope 1	2.1	5%
Scope 2	6.7	16%
Scope 3	33.2	79%
Total	42	100%

Emission Hotspots

Emission Hotspot	Scope	Est. % of Total
gypsum extraction and processing	S3	35%
manufacturing and board drying	S1/S2	20%
energy supply and auxiliary production	S3	20%
distribution and transportation	S3	15%
installation, waste management and end-of-life	S3	10%

Manufacturing Geography

Region: North America
Grid Intensity: 450 gCO2e/kWh (IEA 2023)

Material Composition Assumptions

The analysis assumes a standard half-inch thick drywall panel weighing approximately 10 kilograms per square meter. The gypsum core represents the largest component at roughly 8.5 kilograms, consisting primarily of calcium sulfate dihydrate sourced from natural deposits, flue gas desulfurization processes, and recycled content from manufacturing returns and construction waste. Paper facing materials comprise approximately 800 grams of the total weight, utilizing recycled paper and kraft paper layers bonded to both front and back surfaces.

Water content during manufacturing adds temporary weight but evaporates during the drying process, though it significantly influences energy requirements. Cellulose fiber reinforcement contributes roughly 200 grams to enhance bending strength and impact resistance. Starch binders account for approximately 150 grams and facilitate structural bonding between gypsum crystals and paper layers. Various additives including lignosulfonates, potassium sulfate, fungicides, and silicates total approximately 350 grams and serve specialized functions for workability, preservation, and performance enhancement.

Manufacturing Geography

North American production dominates the global gypsum board industry, with major manufacturing facilities concentrated in regions with abundant natural gypsum deposits or access to synthetic gypsum from coal-fired power plants. The assumed grid intensity of 0.45 kilograms of carbon dioxide equivalent per kilowatt-hour reflects the mixed energy portfolio typical of these manufacturing regions, which combines natural gas, coal, and renewable sources.

This geographical concentration exists because gypsum board manufacturing requires proximity to raw material sources to minimize transportation costs, given the product’s relatively low value-to-weight ratio. Additionally, the energy-intensive drying process benefits from access to reliable industrial energy infrastructure and favorable utility rates commonly available in established manufacturing corridors.

Regional Variation

Manufacturing Region	Grid Intensity (kgCO2e/kWh)	Estimated CCI Score	Adjustment vs Default
North America	0.45	42	Baseline
Europe	0.35	38	-10% lower emissions
China	0.65	48	+14% higher emissions
Nordic Countries	0.15	32	-24% lower emissions
Australia	0.75	52	+24% higher emissions

Provenance Override Guidance

Submit detailed energy consumption data for the manufacturing facility, including fuel mix used for drying operations and electricity sources for processing equipment.
Provide gypsum source documentation specifying the proportion of natural gypsum, synthetic gypsum from flue gas desulfurization, and recycled content from both manufacturing returns and post-consumer sources.
Document transportation distances and methods for raw material delivery to the manufacturing facility, including gypsum, paper materials, and additives.
Supply facility-specific emission factors and energy efficiency metrics that demonstrate performance relative to industry averages for board production and drying processes.
Provide recycled content verification for paper facing materials and any specialized additives or reinforcement materials used in the specific product formulation.

Methodology Notes

The CCI score represents cradle-to-gate emissions for one square meter of standard half-inch gypsum board, including raw material extraction, processing, manufacturing, and distribution to retail locations.
Scope 3 emissions dominate the carbon footprint due to energy-intensive gypsum processing and the manufacturing supply chain, while direct manufacturing operations contribute primarily through natural gas consumption in drying kilns.
The functional unit assumes standard residential-grade drywall with typical density and thickness specifications used in North American construction practices.
Installation labor, joint compound, fasteners, and building-level end-of-life scenarios are excluded from the assessment boundary.
Limited data availability for emerging lightweight formulations and regional manufacturing efficiency variations may affect accuracy for specialized product types.

Related Concepts

Sources

WRAP 2008 Comprehensive life-cycle analysis of plasterboard — Manufacturing energy requirements reach approximately 1,750,000 to 2,490,000 BTU per 1,000 square feet during the drying process.
Athena Sustainable Materials Institute Gypsum Board LCA — Standard half-inch drywall generates approximately 0.39 kilograms of carbon dioxide equivalent per kilogram of material.
European Gypsum Association 2015 Life Cycle Assessment of Plasterboard — Manufacturing and processing activities contribute roughly 79 percent of all Scope 3 emissions in the product lifecycle.
Gypsum Association 2015 Cradle-to-Gate LCA of Gypsum Wallboard — Current gypsum board composition includes 85 percent virgin gypsum and varying percentages of synthetic and recycled materials.
EPA WARM Model Drywall Assessment — New construction generates an estimated 300,000 tonnes of gypsum board waste annually with installation waste rates between 5 and 30 percent.
Tae et al. 2011 Life cycle environmental loads and economic efficiencies of apartment buildings — Plasterboard materials account for 82 to 87 percent of total carbon emissions in drywall partition systems.

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