Residential façade in Ahlum aluminum composite panels, matte black finish

ACP panels and the building code: straight answers.

Since the widely publicized façade fires, aluminum composite panels raise a real compliance question. Here's the frank version: what the PE core is, what the building code regulates, who decides — and how to validate your project's compliance before you order.

Request the documentation → See the 4 mm PE core

The material

Yes, the PE core
is combustible.

Let's start with what some suppliers write in small print: an aluminum composite panel with a polyethylene core is a combustible material.

The 5005 aluminum skins don't burn; the polyethylene core does. This is the standard market construction for ACP panels — the same one used by Alupanel, PE-core Alucobond and the composite panels widely used in signage and residential cladding. It's not a hidden flaw or a footnote: it's a characteristic that determines where and how the product can be specified.

Mineral-core variants exist in the industry for projects with enhanced fire-performance requirements. If your project needs one, the first question to ask any supplier — us included — is: what exactly is the core construction, and what documentation backs it?

Compliance

What the building
code regulates.

In Canada, the National Building Code — and, in Quebec, the construction code administered by the RBQ — regulates façade materials by project, not by product.

Occupancy and height

Fire-performance requirements for exterior cladding depend on the building's occupancy (residential, commercial, assembly…), its height and its property-line distance. The larger and more occupied the building, the higher the requirements.

Who decides

Cladding selection and compliance belong to the project's architect or engineer, validated by the authorities issuing the permit. A panel supplier cannot substitute for that professional judgment.

Documentation

Any serious specification is backed by documents: panel composition, spec sheets, test reports where required. Ask for them in writing, with the quote — not after the order.

In practice

The compliance chain,
step by step.

For any project, responsibilities follow a clear chain — knowing it keeps you from asking the question to the wrong person.

The National Building Code sets the baseline, which provincial codes adopt and administer locally. The requirements that apply to a given cladding depend on the building's occupancy and height: a bungalow façade is not specified like a multi-storey building. In practice, the project's architect or engineer specifies the acceptable material, the cladding-system designer validates the details, and the permitting authority confirms at plan approval.

The supplier's role in that chain: provide the panel's exact composition and documentation, in writing, when the professional needs it. That's why we recommend requesting documentation with the quote — not the week before work starts.

Where it fits

Where the PE-core panel
is at home.

The PE-core panel remains the industry standard for a reason: it covers a very large share of real-world projects.

→ RESIDENTIAL

Façades and accent walls

Home façades, accent walls, returns and garages: the bulk of the ACP cladding market, where the 4 mm panel has long been the reference choice.

→ SIGNAGE

Signs and lettering

The reference substrate for sign shops: flat, light, easy to cut and route. The historic use of aluminum composite.

→ INTERIOR

Commercial fit-out

Lobbies, retail, offices, counters: an architectural-grade interior finish without the constraints of a high-rise exterior cladding.

Architectural applications of the ACP panel: the guide →

Method

Validate compliance
before ordering.

Four simple steps to never discover a compliance problem after the purchase.

Define the project

Occupancy, height, location: these three data points determine the applicable compliance regime.

Consult the professional

The architect, engineer or cladding-system manufacturer confirms the acceptable material for the project.

Require documentation

Exact composition, spec sheets, test reports if required — in writing, with the quote.

Order accordingly

Once the material is validated in writing, ordering becomes the easy part.

FAQ

ACP & building code:
your questions.

Are ACP panels combustible?

Yes. An aluminum composite panel with a polyethylene (PE) core is a combustible material — as is wood, for that matter. It is a characteristic of the standard market construction, and it's the reason building codes regulate its use according to building type and height.

Can ACP panels be installed on any building?

No. The requirements of the National Building Code of Canada (and the Quebec construction code) depend on the building's occupancy, height and property-line distance. Cladding selection and compliance are the responsibility of the project's architect, engineer and permitting authorities.

Which projects suit a PE-core panel best?

Common applications for PE-core panels: residential façades, signage and lettering, accent walls, light renovation, and commercial interior fit-out. For a project with fire-performance requirements, the performance documentation must be validated by the project's professional before specification.

Does Ahlum publish fire-reaction certifications?

No. We publish no fire-reaction classification on this page: requirements vary by project and jurisdiction. If your project requires specific documentation, ask for it with your quote — we confirm in writing what exists and what applies.

Compliance first, order second.

Describe your project in a quote request: we confirm in writing the panel construction and the documentation available.

Request a quote ACP spec sheet ACM cladding

PE core 4 mm Residential vs commercial Lifespan & warranty