APP-Modified Asphalt Commercial Roofing (Torch Applied)

Declaration details

Manufacturer

CertainTeed Saint-Gobain

Program operator

Smart EPD

Declaration number

SmartEPD-2025-060-0384-01

Date of issue

April 1, 2025

Valid until

April 1, 2030

Product category rules (PCR)

UL Part B: Asphalt Shingles, Built-up Asphalt and Modified Bituminous Membrane Roofing (version 3)

Standard

ISO 14025:2006 and ISO 21930:2017

Declared unit

1 m2 of product

System boundary

Cradle to gate with other options (A1 - A3, A4, A5, C1 - C4)

Product specificity

Product Average

Manufacturing specificity

Facility Specific

Manufacturing plant

Little Rock (2701 E Roosevelt Rd, Little Rock, AR, USA)

Product category

Cladding › RoofPanels

Verifier

Sarah Curpen

LCA software

Sphera LCA for Experts (formerly GaBi) 10.9

Program instructions

Smart EPD General Program Instructions v.1.0, November 2022

Life cycle assessment results

Results per 1 m2 of product.

Environmental Impact Assessment Results

Resource Use Indicators

Waste and Output Flow Indicators

Carbon Emissions and Removals

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

Hazardous substances

No hazardous substances in this product.

Scenarios

Transport to the building site (A4)

Fuel type

Diesel

Vehicle type

Standard Freight Trailer

Transport distance

800 km

Capacity utilization

100%

Packaging mass

0.51 kg

End of life (C1-C4)

Collected with mixed construction waste

6.68 kg

Landfill

6.68 kg

Product or material for final disposal

6.68 kg

Product description

Commercial Roofing systems for low-slope roofing are asphalt based systems with a base sheet and a cap sheet. Roof systems may consist of one or multiple materials depending on the desired performance, warranty, and cost . CertainTeed offers over forty roll good products, which equates to hundreds of system configurations and specification options. This EPD is specific to the App-Modified Asphalt Commercial Roofing products. App-modified asphalt products are manufactured with atactic polypropylene infused asphalt which increases material strength and toughness, especially in high UV areas. CertainTeed APP-modified asphalt roofing systems are available as torch applied applications. Additionally, some products listed at “FR” are manufactured with proprietary additives to increase fire resistance.

Reinforcement mats serve as the structure to asphalt based low-slope roll goods. The mats are impregnated and coated with APP-modified asphalt and are available with either fiberglass for the base sheet or polyester mats for the cap sheets, and are of varying thicknesses. Fiberglass stands up well to heat and tension. Its inherently high melting point affords superior fire resistance when combined with a fire-retardant asphalt formulation. Fiberglass-reinforced products applied in hot asphalt retain excellent dimensional stability. Additionally, fiberglass has superior tensile strength. Polyester’s predominant benefits are puncture resistance and high elongation. Polyester products handle rooftop foot traffic better. They can also cyclically absorb the strain of building movement and return back to their original dimension.

CertainTeed APP-Modified Asphalt Commercial Roofing systems are available only in a Torch applied application. Torch application is faster than hot asphalt or cold adhesive and has very good adhesion when applied correctly. The limitations of the torch application include a burn/fire risk, a risk of improper application, cost of propane needed, and require trained labor.

Interpretation

Based on the results of the life cycle assessment, the life cycle impacts are strongly driven by the raw materials and installation phases. Within the raw materials, the mats and coatings, and where included, the fire retardant metals, contributed significantly to the environmental impact potentials. Installation methods vary among the products in the study and installation for specific projects varies widely depending on the project, products used, applications, etc. This makes specific installation data difficult to obtain. Due to the variable nature of the installation methods and materials, the results for the installation phase of the life cycle should be considered highly uncertain. The results for individual products within each of the product lines specified in this study vary slightly compared to the averages reported in this EPD, typically due to the coatings and presence of fire retardant metals in the raw material composition.