S
Sam Frew
Guest
- Thread Author
- #1
In 1300, a statute of Edward I ruled that no silver in England could leave a workshop until it had been tested by a third party and struck with a leopard’s head. By 1478, there were too many workshops for the Crown’s appointed assayers to reach on foot, so makers were ordered to bring their work to Goldsmiths’ Hall on Foster Lane instead. The word hallmark comes from the marks struck at that very Hall.
What settled over the following centuries was a system of four marks. The leopard’s head tells you where a piece was assayed. The lion passant tells you what it’s made of. The date letter tells you when, and it was introduced so that substandard silver could be traced back to the warden who approved it; finally, the maker’s mark tells you who. Four questions tell a whole story of provenance.
Seven hundred years on, much of the time, we’re still taking the maker’s word for it. Ask an architect where they go for sustainability information about a product, and the answer is usually the manufacturer’s website — AIA research into sustainable specification found it to be the most-used source, at 82%. A product, after all, has no way of vouching for the business that made it.
One industry has set out to close this gap. The Vinyl Sustainability Council marks its tenth anniversary this year: it was formed in 2016 on the view that individual company initiatives weren’t enough, and that the fuller question wasn’t only what a product contained, but how the company behind it operated.
The +Vantage Vinyl mark identifies companies whose sustainability practices have been independently verified, looking beyond what a product contains to how the company behind it operates.
There’s plenty on those websites, and much of it is useful. Environmental Product Declarations report a product’s environmental impact across its life cycle, calculated under a shared rulebook so that two manufacturers making the same thing have to measure it the same way. A Health Product Declaration lists what’s inside, down to residuals. Twenty years ago neither existed at any scale, and the industry deserves credit for building them.
But these documents describe the object. They’ll tell you what a product contains and what making it costs the planet, to several decimal places. What they can’t tell you is whether the recycling program listed on the webpage is actually collecting anything, how the people in the plant are treated, or whether this year’s performance beat last year’s. That is the harder question, and the one specifiers are really struggling with: at a time when unverified information is rampant, who can specifiers trust?
The Vinyl Sustainability Council’s answer was to verify companies rather than products. A materiality assessment established where the sector could have the most impact, and in June 2018 it launched +Vantage Vinyl®, a voluntary standard that verifies companies rather than products.
Participants are audited by GreenCircle Certified against 29 Guiding Principles. Established in 2009 to test unverified environmental claims, GreenCircle matters as much as the principles: ISO 17065 compliant and recognized as a valid third-party certification entity by the US Green Building Council. Company data goes directly to GreenCircle, and VSC sees only anonymized, aggregated figures.
+Vantage Vinyl verification looks beyond products such as vinyl flooring to evaluate the environmental and social practices of the companies that manufacture them.
The mandatory principles are demanding. Lead, hexavalent chromium and cadmium cannot be used as added ingredients. Additives in PVC products must be openly disclosed. Scope 1 and Scope 2 GHG emissions action plans with defined goals and target dates; verification lasts three years with annual maintenance checks in between, and can be suspended for misleading information or revoked for missing the emissions deadline.
That structure is built to ensure year-on-year improvement. Above the mandatory floor sit two tiers: Silver requires more than 80% conformance plus at least three advanced or innovative practices, and Gold requires 100% conformance, three advanced practices and two innovative ones. The 2024 Progress Report shows 30 companies verified and 28 renewing, with average conformance at 89%.
In December 2025, the standard was rebuilt. Version 4.0 reorganized the program around five pillars: Human Health, Climate Responsibility, Ecosystem Protection, Social Health and Equity, and Circular Economy. Those are the five impact areas of the AIA’s own Materials Pledge, and the same five LEED v5 now scores products against, so a specifier reading a +Vantage Vinyl result is reading it in familiar categories.
Circularity is where this conversation comes into its own, because a product document can describe an end-of-life route without ever proving it exists anywhere but on paper.
Thirty companies have achieved +Vantage Vinyl verification, averaging 89% conformance with the program’s sustainability requirements.
Take vinyl roofing. PVC reheats and reprocesses repeatedly without losing its key physical properties, so old membrane returns to the raw material base readily enough, yet very little of it ever gets recycled. Sika — the Swiss manufacturer behind Sarnafil roofing membranes and a +Vantage Vinyl-Verified VSC member — has some insight into why. To be reused, a membrane has to be stripped, packaged and shipped before it reaches a processor. For years, that extra effort was the barrier — but as manufacturers, contractors and processors have begun to coordinate, the infrastructure to handle it has steadily taken shape.
“Our journey started with recycling manufacturing scrap materials back into roofing membranes in the late 90s and eventually added our roof take-back program, recycling old PVC roofs at the end of their service life into new roofing membranes,” the company says. Factory trimmings first, because they arrive clean and sorted. Old roofs second, because they don’t. More than 98% of the vinyl from Sika’s manufacturing and installation now returns to new membrane.
It’s taken Sika over 30 years to get to where it is today; few manufacturers can build a process like that alone. A take-back program needs a contractor to strip and bundle the old material, a processor able to handle it and buyers for what comes out.
Recovering and recycling vinyl, says Eric Cotterman of Cornerstone Building Brands, “demonstrates how manufacturers, builders, recyclers, and homeowners can work together to create a more resource-efficient construction industry.” Cornerstone, another +Vantage Vinyl-Verified VSC member, works on the same initiative inside its own plants, cutting manufacturing waste at source. “The future of sustainable manufacturing depends on moving beyond a traditional ‘take, make, dispose’ model toward one where materials remain valuable resources for generations,” Cotterman adds.
A re-roofing project at Marriott Long Wharf in Boston recycled old vinyl roofing into new roofing membrane, demonstrating vinyl circularity.
While process plays a huge part in what is possible, whether a material can come back at all is decided earlier still, in the compound. Teknor Apex, family-owned since 1924 — also a +Vantage Vinyl-Verified VSC member — works at that end. Its Cycle-Tek® range is built from post-industrial and post-consumer recyclate, and its BioVinyl® compounds replace fossil-based plasticizers with bio-based alternatives, formulated to stay compatible with existing vinyl recycling streams.
“The future of materials will be shaped by innovation that advances both performance and sustainability. We’re proud to help our customers accelerate that transition through renewable, recycled, and next-generation material solutions,” says Brian Wojtyna, Senior Director, ESG & ERM, Tecknor Apex.
For architects, +Vantage Vinyl adds another layer of information to what’s already in the submittal folder. Alongside an EPD, it fills in the part of the story that has been missing — not what a product contains, but whether the company behind it can be trusted. Though it may not count towards LEED points directly, instead, it’s designed to work with the tools teams already use. The Council has published specification guidance, a crosswalk mapping the standard against LEED v5, and AIA-approved continuing education for teams working out how to put it to use.
As the building industry continues to prioritize transparency and measurable sustainability, access to credible resources has never been more important. The practical change is small. Alongside the declarations you already request, ask what the manufacturer itself is measured against, who does the measuring, and how often.
To learn more about the Vinyl Sustainability Council, the +Vantage Vinyl® verification program, and the industry’s ongoing sustainability initiatives, visit vantagevinyl.com.
The post The Maker’s Word: What Verification Really Tells You About a Material appeared first on Journal.
What settled over the following centuries was a system of four marks. The leopard’s head tells you where a piece was assayed. The lion passant tells you what it’s made of. The date letter tells you when, and it was introduced so that substandard silver could be traced back to the warden who approved it; finally, the maker’s mark tells you who. Four questions tell a whole story of provenance.
Seven hundred years on, much of the time, we’re still taking the maker’s word for it. Ask an architect where they go for sustainability information about a product, and the answer is usually the manufacturer’s website — AIA research into sustainable specification found it to be the most-used source, at 82%. A product, after all, has no way of vouching for the business that made it.
One industry has set out to close this gap. The Vinyl Sustainability Council marks its tenth anniversary this year: it was formed in 2016 on the view that individual company initiatives weren’t enough, and that the fuller question wasn’t only what a product contained, but how the company behind it operated.
The +Vantage Vinyl mark identifies companies whose sustainability practices have been independently verified, looking beyond what a product contains to how the company behind it operates.
There’s plenty on those websites, and much of it is useful. Environmental Product Declarations report a product’s environmental impact across its life cycle, calculated under a shared rulebook so that two manufacturers making the same thing have to measure it the same way. A Health Product Declaration lists what’s inside, down to residuals. Twenty years ago neither existed at any scale, and the industry deserves credit for building them.
But these documents describe the object. They’ll tell you what a product contains and what making it costs the planet, to several decimal places. What they can’t tell you is whether the recycling program listed on the webpage is actually collecting anything, how the people in the plant are treated, or whether this year’s performance beat last year’s. That is the harder question, and the one specifiers are really struggling with: at a time when unverified information is rampant, who can specifiers trust?
The Vinyl Sustainability Council’s answer was to verify companies rather than products. A materiality assessment established where the sector could have the most impact, and in June 2018 it launched +Vantage Vinyl®, a voluntary standard that verifies companies rather than products.
Participants are audited by GreenCircle Certified against 29 Guiding Principles. Established in 2009 to test unverified environmental claims, GreenCircle matters as much as the principles: ISO 17065 compliant and recognized as a valid third-party certification entity by the US Green Building Council. Company data goes directly to GreenCircle, and VSC sees only anonymized, aggregated figures.
+Vantage Vinyl verification looks beyond products such as vinyl flooring to evaluate the environmental and social practices of the companies that manufacture them.
The mandatory principles are demanding. Lead, hexavalent chromium and cadmium cannot be used as added ingredients. Additives in PVC products must be openly disclosed. Scope 1 and Scope 2 GHG emissions action plans with defined goals and target dates; verification lasts three years with annual maintenance checks in between, and can be suspended for misleading information or revoked for missing the emissions deadline.
That structure is built to ensure year-on-year improvement. Above the mandatory floor sit two tiers: Silver requires more than 80% conformance plus at least three advanced or innovative practices, and Gold requires 100% conformance, three advanced practices and two innovative ones. The 2024 Progress Report shows 30 companies verified and 28 renewing, with average conformance at 89%.
In December 2025, the standard was rebuilt. Version 4.0 reorganized the program around five pillars: Human Health, Climate Responsibility, Ecosystem Protection, Social Health and Equity, and Circular Economy. Those are the five impact areas of the AIA’s own Materials Pledge, and the same five LEED v5 now scores products against, so a specifier reading a +Vantage Vinyl result is reading it in familiar categories.
Circularity is where this conversation comes into its own, because a product document can describe an end-of-life route without ever proving it exists anywhere but on paper.
Thirty companies have achieved +Vantage Vinyl verification, averaging 89% conformance with the program’s sustainability requirements.
Take vinyl roofing. PVC reheats and reprocesses repeatedly without losing its key physical properties, so old membrane returns to the raw material base readily enough, yet very little of it ever gets recycled. Sika — the Swiss manufacturer behind Sarnafil roofing membranes and a +Vantage Vinyl-Verified VSC member — has some insight into why. To be reused, a membrane has to be stripped, packaged and shipped before it reaches a processor. For years, that extra effort was the barrier — but as manufacturers, contractors and processors have begun to coordinate, the infrastructure to handle it has steadily taken shape.
“Our journey started with recycling manufacturing scrap materials back into roofing membranes in the late 90s and eventually added our roof take-back program, recycling old PVC roofs at the end of their service life into new roofing membranes,” the company says. Factory trimmings first, because they arrive clean and sorted. Old roofs second, because they don’t. More than 98% of the vinyl from Sika’s manufacturing and installation now returns to new membrane.
It’s taken Sika over 30 years to get to where it is today; few manufacturers can build a process like that alone. A take-back program needs a contractor to strip and bundle the old material, a processor able to handle it and buyers for what comes out.
Recovering and recycling vinyl, says Eric Cotterman of Cornerstone Building Brands, “demonstrates how manufacturers, builders, recyclers, and homeowners can work together to create a more resource-efficient construction industry.” Cornerstone, another +Vantage Vinyl-Verified VSC member, works on the same initiative inside its own plants, cutting manufacturing waste at source. “The future of sustainable manufacturing depends on moving beyond a traditional ‘take, make, dispose’ model toward one where materials remain valuable resources for generations,” Cotterman adds.
A re-roofing project at Marriott Long Wharf in Boston recycled old vinyl roofing into new roofing membrane, demonstrating vinyl circularity.
While process plays a huge part in what is possible, whether a material can come back at all is decided earlier still, in the compound. Teknor Apex, family-owned since 1924 — also a +Vantage Vinyl-Verified VSC member — works at that end. Its Cycle-Tek® range is built from post-industrial and post-consumer recyclate, and its BioVinyl® compounds replace fossil-based plasticizers with bio-based alternatives, formulated to stay compatible with existing vinyl recycling streams.
“The future of materials will be shaped by innovation that advances both performance and sustainability. We’re proud to help our customers accelerate that transition through renewable, recycled, and next-generation material solutions,” says Brian Wojtyna, Senior Director, ESG & ERM, Tecknor Apex.
For architects, +Vantage Vinyl adds another layer of information to what’s already in the submittal folder. Alongside an EPD, it fills in the part of the story that has been missing — not what a product contains, but whether the company behind it can be trusted. Though it may not count towards LEED points directly, instead, it’s designed to work with the tools teams already use. The Council has published specification guidance, a crosswalk mapping the standard against LEED v5, and AIA-approved continuing education for teams working out how to put it to use.
As the building industry continues to prioritize transparency and measurable sustainability, access to credible resources has never been more important. The practical change is small. Alongside the declarations you already request, ask what the manufacturer itself is measured against, who does the measuring, and how often.
To learn more about the Vinyl Sustainability Council, the +Vantage Vinyl® verification program, and the industry’s ongoing sustainability initiatives, visit vantagevinyl.com.
The post The Maker’s Word: What Verification Really Tells You About a Material appeared first on Journal.