Environmental Product Declaration

LP WeatherLogic® Seam & Flashing Tape

Environmental Product Declaration (EPD) for LP WeatherLogic® Seam & Flashing Tape, manufactured by Louisiana-Pacific Corporation. Declaration SmartEPD-2025-088-0611-01.1, prepared according to Smart EPD® Part B PCR for Plastic and Elastomer Roofing and Sealing Sheet Systems, 1000-005, v1 (adapted from IBU), valid until October 1, 2030.

Download the EPD (PDF)

Declared unit: 1 m of product with a width of 0.0953 m
Valid until: October 1, 2030
PCR: Smart EPD® Part B PCR for Plastic and Elastomer Roofing and Sealing Sheet Systems, 1000-005, v1 (adapted from IBU)

Declaration details

Manufacturer: Louisiana-Pacific Corporation
Program operator: Smart EPD
Declaration number: SmartEPD-2025-088-0611-01.1
Date of issue: October 1, 2025
Valid until: October 1, 2030
Product category rules (PCR): Smart EPD® Part B PCR for Plastic and Elastomer Roofing and Sealing Sheet Systems, 1000-005, v1 (adapted from IBU) (version 1)
Standard: ISO 14025:2006 and ISO 21930:2017
Declared unit: 1 m of product with a width of 0.0953 m
System boundary: Cradle to gate with other options (A1 - A3, C1 - C4)
Product specificity: Product Average
Manufacturing specificity: Manufacturer Average
Manufacturing plants: R&D Facility (1625 Highland Ave NE, Hickory, NC 28601, USA); Plant 30 Distribution Center (3422 Catawba Industrial Pl, Catawba, NC 28609, USA); Plant 27 Product Slitting Center (3422 Catawba Industrial Pl, Catawba, NC 28609, USA)
Product category: ThermalMoistureProtection › MembraneRoofing
Product SKU: LP WeatherLogic® Seam & Flashing Tape 3-3/4” (self-wound), 6” (lined)
Verifier: Vijay Thakur, Individual Verifier
LCA software: SimaPro 10.2
Program instructions: Smart EPD General Program Instructions v.1.0, November 2022

Life cycle assessment results

Results per 1 m of product with a width of 0.0953 m.

Environmental Impact Assessment Results

Indicator	Unit	A1	A2	A3	A1-A3	C1	C2	C3	C4
GWP-total	kg CO2 eq	2.60e-1	1.82e-2	2.63e-2	3.04e-1	0	2.77e-4	0	4.12e-3
ODP	kg CFC 11 eq	3.37e-10	6.66e-12	1.17e-10	4.61e-10	0	1.07e-13	0	3.66e-13
AP	kg SO2 eq	9.19e-4	1.39e-4	5.14e-5	1.11e-3	0	1.43e-6	0	3.60e-6
EP	kg N eq	9.78e-5	2.85e-5	3.11e-5	1.57e-4	0	3.39e-7	0	4.67e-5
POCP	kg O3 eq	1.30e-2	3.37e-3	8.37e-4	1.72e-2	0	4.03e-5	0	8.51e-5
ADP-fossil	MJ	4.98e+0	2.48e-1	1.79e-1	5.41e+0	0	3.85e-3	0	1.09e-2
GWP-fossil	kg CO2 eq	1.69e-4	2.86e-6	1.09e-2	1.11e-2	0	4.28e-8	0	2.73e-6
GWP-biogenic	kg CO2 eq	2.60e-1	1.82e-2	1.53e-2	2.93e-1	0	2.76e-4	0	4.12e-3
GWP-luluc	kg CO2 eq	2.04e-4	7.73e-6	3.85e-5	2.50e-4	0	1.10e-7	0	2.95e-7
ADP-fossil	MJ	ND	ND	ND	ND	ND	ND	ND	ND

Resource Use Indicators

Indicator	Unit	A1	A2	A3	A1-A3	C2	C4
PERE	MJ, net calorific value	2.20e-1	3.45e-3	8.19e-2	3.05e-1	5.09e-5	1.77e-4
PERM	MJ, net calorific value	0	0	0	0	0	0
PERT	MJ, net calorific value	2.20e-1	3.45e-3	8.19e-2	3.05e-1	5.09e-5	1.77e-4
PENRE	MJ, net calorific value	4.53e+0	2.67e-1	2.43e-1	5.04e+0	4.15e-3	1.18e-2
PENRM	MJ, net calorific value	1.06e+0	0	1.36e-3	1.06e+0	0	0
PENRT	MJ, net calorific value	5.59e+0	2.67e-1	2.44e-1	6.10e+0	4.15e-3	1.18e-2
SM	kg	0	0	0	0	0	0
RSF	MJ, net calorific value	0	0	0	0	0	0
NRSF	MJ, net calorific value	0	0	0	0	0	0
RE	MJ	0	0	0	0	0	0
FW	m3	2.12e-3	3.31e-5	-2.15e-5	2.13e-3	5.18e-7	-1.63e-4

Waste and Output Flow Indicators

Indicator	Unit	A3	A1-A3	C4
HWD	kg	0	0	0
NHWD	kg	3.42e-2	3.42e-2	4.41e-2
RWD	kg	0	0	0
CRU	kg	0	0	0
MFR	kg	0	0	0
MER	kg	0	0	0
EEE	MJ	0	0	0
EET	MJ	0	0	0

Carbon Emissions and Removals

Indicator	Unit	A3	A1-A3	C4
BCRP	kg CO2	0	0	0
BCEP	kg CO2	0	0	0
BCRK	kg CO2	6.31e-3	6.31e-3	4.02e-3
BCEK	kg CO2	9.39e-5	9.39e-5	2.20e-3
BCEW	kg CO2	0	0	0
CCE	kg CO2	0	0	0
CCR	kg CO2	0	0	0
CWNR	kg CO2	0	0	0

ND = not declared. Life cycle modules: A1-A3 product stage, A4-A5 construction process, B use stage, C end of life, D benefits and loads beyond the system boundary.

Material composition

Product composition
Material/Component Category	Origin	% Mass
Polyethylene backing	United States of America	39.58
Polyethylene terephthalate release liner	United States of America	15.11
Acrylic ester resin	Germany	38.52
Plasticizer	China	6.8

Packaging
Packaging material	Origin	Mass (kg)
Corrugated Carton	Lincolnton, North Carolina, USA	0.003393
Polyvinyl chloride film	Hickory, North Carolina, USA	0.000065
Adhesive Paper Label	Asheboro, North Carolina, USA	0.000043
Paper Core	Hickory, North Carolina, USA	0.001024
Silicone Coater Paper	Tabor City, North Carolina, USA	0

Biogenic carbon
Biogenic carbon content	kg C per m
Biogenic carbon content in product	0
Biogenic carbon content in accompanying packaging	0.002208

Hazardous substances

No regulated hazardous or dangerous substances are included in this product.

Scenarios

End of life (C1-C4)

Collected with mixed construction waste: 0.04412 kg
Landfill: 0.04412 kg
Product or material for final disposal: 0.04412 kg

Product description

The LP WeatherLogic® Seam & Flashing Tape is a critical component of the LP WeatherLogic® Air & Water Barrier system. This tape is used to both seal seams and for flashing purposes and helps prevent the infiltration of water into the home. The tape also helps to create a tighter and more energy-efficient home.

Interpretation

For seaming tape products analyzed in this study raw material supply (A1), contributes to 48% - 84% of potential impacts, depending on the product and Impact type. Raw material supply contributes to 84% of global warming potential and to 82% of acidification potential across all six seaming tapes. Manufacturing contributes between 5% to 25% of impacts, with the highest contribution of 25% to ozone depletion potential. Potential environmental impacts from end-of-life stages for all products were the least significant contributors, aside from eutrophication (23%). For seaming tape product studied, the global warming potential impacts were largely driven by raw material use, especially methyl acrylate (MA), a proxy for an acrylic resin used in the tapes. The use of PE and PET also contribute significantly to impacts due to raw material supply. LCA results are based on a relative approach and indicate potential environmental effects therefore do not predict actual impacts on category impacts.

LCIA results are relative expressions and do not predict impacts on category endpoints, the exceeding of thresholds, safety margins or risks. EPDs are comparable only when they follow the same PCR, functional unit and system boundary. The full EPD (PDF) contains the methodology, scenario assumptions and verification statement.