Legal

Environmental Claims & Substantiation

Effective Date: October 5, 2026 · Last Updated: October 7, 2026

TL;DR – Environmental Claims & Evidence

When we say the panels in an Interlock® roof are recyclable, that the CRRC-rated colours reflect more of the sun's heat than conventional dark roofing, or that it is built to be the last roof you need, we mean something specific and checkable. This page lists each environmental claim Interlock Metal Roofing (BC) Ltd. makes, the evidence behind it, and the words we deliberately avoid. Substantiation is available on request from policies@interlockgroup.com.

1. Why This Page Exists

In Canada, environmental marketing claims are governed by the Competition Act's deceptive marketing provisions. Since June 20, 2024, paragraph 74.01(1)(b.1) has required a claim about the environmental benefits of a product to be based on an adequate and proper test, and paragraph 74.01(1)(b.2) has required a claim about the environmental benefits of a business or business activity to be based on adequate and proper substantiation. The business making the claim must be able to prove it. The Competition Bureau's guidelines, Environmental claims and the Competition Act, explain how the Bureau applies these rules: claims should be truthful, properly tested, specific about what is being compared, not exaggerated, and clear.

We support those standards. This page connects each environmental statement on this website to the evidence it rests on, so that you, the Competition Bureau or a competitor can check our work.

2. Aluminum Recyclability

Claim: Interlock® roofing panels are recyclable.

Basis: The panels are formed from aluminum sheet. Aluminum is recovered through established scrap-metal recycling streams across Canada and can be recycled repeatedly. At the end of the roof's service life, the panels can be taken to a scrap-metal recycler as aluminum.

Qualification: Roofing panels do not go in household blue-box or curbside recycling; they go to scrap-metal dealers and construction-waste recyclers. Check with local facilities for what they accept.

3. Recycled Content

Claim: None at this time. We do not currently state that Interlock® panels contain recycled aluminum, and we do not publish a recycled-content percentage.

Basis: A recycled-content claim must be supported by documentation for the aluminum coil actually used in production. The manufacturer, Interlock Roofing, has requested current recycled-content documentation from its coil supplier. When it is on file, this section will be updated with the figure, measured by weight, with its source and date. Until then, any recycled-content statement in our marketing is withdrawn; if you find one, tell us at policies@interlockgroup.com and we will remove it.

4. Reflective Colours & Cooling Energy

Claim: Reflective Alunar® colours absorb less of the sun's heat than conventional dark roofing, which can lower summer cooling load. We do not publish a percentage energy saving for Interlock® roofs.

Basis: The panels are finished with the Alunar® coating system, a 70% PVDF coating. Alunar® colours are rated by the Cool Roof Rating Council (CRRC): each rated colour's solar reflectance and thermal emittance are measured under the CRRC product rating program and published in the CRRC Rated Products Directory and on the manufacturer's CRRC page (interlockroofing.com/specifications/crrc-rated-roof-products/). Field research at Oak Ridge National Laboratory has measured less heat entering the house through reflective painted and stone-coated metal roofs than through asphalt shingles. That research tested other roofs, so we do not apply its figures to Interlock roofs.

Qualification: Any effect on your energy use depends on climate, colour, attic insulation and ventilation, roof orientation and the house itself. In heating-dominated climates, which include much of Canada, a reflective roof also reflects some useful winter sun, and the U.S. Department of Energy notes this can offset part or all of the summer saving. We do not promise a specific dollar or percentage saving for your home. Where we call an Interlock roof “energy-efficient”, we mean this reflective-finish property and nothing broader.

5. Longevity as Sustainability

Claim: A roof that does not need replacing generates less waste than one that does.

Basis: The Guardian Lifetime Limited Material Warranty from the manufacturer, Interlock Roofing, covers the original purchaser for as long as they own the home, and the aluminum panels do not rust. A roof built and warranted to that standard avoids the repeated tear-off and disposal of shorter-lived roofing. This is a durability comparison. It is not a claim that any roofing product is impact-free to manufacture, ship or install, and it does not mean the roof needs no maintenance.

6. Certifications & Testing

Independent evaluations and listings issued for the manufacturer's products that stand behind product claims on this website. Copies are available from the manufacturer or from us on request:

  • CCMC 10475-R — Canadian Construction Materials Centre evaluation (Slate & Cedar shingles)
  • ICC-ES Evaluation Report ESR-1790 — code-compliance evaluation (aluminum alloys, thicknesses, wind-uplift tables, fire-classification conditions)
  • UL 2218 Class 4 impact-resistance listing (Intertek, under Delta Building Products) for the Diamond, Shingle and Slate, Shake and Tile panel families
  • Cool Roof Rating Council (CRRC) product ratings for rated Alunar® colours — solar reflectance and thermal emittance
  • Alunar® coating performance, warranted for 30 years against chalking beyond ASTM D4214 rating 8 and colour change beyond 5 Hunter ΔE units per ASTM D2244

A listing or rating covers the product characteristic it names and nothing else. None of them is an environmental certification of the product as a whole, and we do not present them that way.

7. What We Do Not Claim

We avoid environmental words we cannot measure. We do not describe our products, our installations or Interlock Metal Roofing (BC) Ltd. as “eco-friendly”, “green”, “sustainable”, “carbon neutral”, “net zero” or “climate positive” without a specific, substantiated attribute stated beside the word. We do not claim that the panels' manufacture is impact-free, or that a reflective roof will save a particular amount of energy in your home. We make no ENERGY STAR claim for any roof, and we make no environmental claim about Interlock Metal Roofing (BC) Ltd.'s business as a whole.

Where we say the panels are made in Canada rather than shipped in from overseas, we are stating where they are manufactured (by Interlock Roofing, in Delta, BC); we do not claim or quantify any transport-emissions saving.

If you find an environmental statement on this website that does not trace back to this page, tell us and we will substantiate it or remove it.

8. Standards & Methodologies

Where a claim rests on measurement, the measurement follows a recognized standard: CRRC product rating program procedures for solar reflectance and thermal emittance; ASTM D4214 (chalking) and ASTM D2244 (colour change) for coating performance; UL 2218 for impact resistance; and the evaluation criteria applied in CCMC and ICC-ES reports. Claims about recyclability rest on the documented properties of aluminum and the availability of scrap-aluminum recycling. Where a claim rests on a comparison, we state what is being compared.

9. Requesting Substantiation

To request substantiation for any environmental claim on this website:

We aim to respond within 10 business days.

Interlock metal roofing — get a free quote