ACP or solid aluminum: two constructions, one façade decision.
A solid aluminum sheet is a single material, with no core. An ACP panel is a composite construction — two aluminum skins on a polyethylene core. For the professional buyer specifying a façade cladding or a sign, that's not a detail: it changes the weight, the rigidity and the spec sheet. Here's a neutral comparison, and the ACP/ACM panel Ahlum manufactures and sells directly across Canada.
Composite or solid:
two distinct constructions.
"Solid aluminum" and "ACP" don't describe the same thing: one is a solid metal sheet, the other a three-layer composite panel. Confusing the two in a spec leads to comparing spec sheets that don't actually compare.
| Construction | What it describes |
|---|---|
| Solid aluminum | An aluminum sheet in a single material, with no core. Thickness and alloy vary by supplier — consult the manufacturer for its exact spec sheet. |
| ACP at Ahlum | Composite panel: two 0.5 mm 5005 aluminum skins on a polyethylene core, matte PVDF finish, 4 mm total thickness — in 4×8 and 5×10. |
Ahlum does not manufacture or sell solid aluminum sheet. For its exact spec sheet, consult the supplier named in the spec directly.
The Ahlum ACP
panel, in brief.
No matter which construction is named in a spec, here are the criteria for the composite panel Ahlum sells directly across Canada.
PE core, no warping
The PE core of the ACP panel gives a flat, rigid surface, while staying lighter than a solid aluminum sheet of comparable rigidity.
Matte PVDF
Matte PVDF finish on the exposed face: stable color, resistant to UV and weather, in matte black and matte white.
4×8 and 5×10
Solid sheet formats vary by supplier. The Ahlum ACP panel is offered in 4×8 (32 sq. ft.) and 5×10 (50 sq. ft.).
Three criteria
before you specify.
Three questions to settle before naming a specific construction in a spec — or accepting a substitution.
Weight & handling
The composite panel's core changes the weight and the on-site handling compared to a solid sheet.
Finish & color
Check the coating type — at Ahlum, a matte PVDF finish in matte black or matte white, verifiable by sample.
Format & seams
The available format determines the number of seams on a large façade — see the ACP panel's 4×8 and 5×10 formats.
ACP, solid aluminum:
your questions.
Does Ahlum sell solid aluminum sheets?
No. Ahlum manufactures and sells a composite panel (ACP) — 5005 aluminum on a polyethylene core, matte PVDF finish — not a solid aluminum sheet.
Is ACP as rigid as a solid sheet?
The polyethylene core of the ACP panel gives a flat, rigid surface with no warping, while remaining lighter than a solid aluminum sheet of comparable rigidity.
Can solid aluminum be replaced with ACP in a spec?
If a spec names a solid aluminum sheet, check the equivalence clause with the architect or engineer before substituting a composite panel — the two constructions don't share the same spec sheet.
Compare, then validate with a sample.
Request a sample to validate the finish, a spec sheet for your quote, or a volume price for your next project.