Rigid Sign Material Comparison: When Aluminum Beats ACM Beats PVC

PVC wins on price and on interior work up to roughly 24×36, at 97.50 dollars a sheet against 240.00 for ACM and 262.50 for solid aluminum. Aluminum wins where the panel has to be thin, dead flat and take repeated impact, and where it will be bolted to a post in the weather for a decade. ACM wins on almost everything large, because it delivers an aluminum surface and aluminum durability at roughly half the weight of solid sheet, for less money per square foot. The crossover point in practice is about 24×36: below it, PVC; above it, ACM; and aluminum for the specific cases where solid metal is the requirement.

Key takeaways

• 3mm PVC is 97.50 dollars per 48×96 sheet, 3mm ACM is 240.00, and 0.040 inch aluminum is 262.50.
• ACM is two 0.012 inch aluminum skins bonded to a polyethylene core, which is only 0.024 inches of metal in a 3mm panel.
• 3A Composites states ACM is approximately half the weight of a solid aluminum sheet of the same size.
• Dibond carries a Class A fire rating under ASTM E-84 and UL 879 certification for electric sign components.
• Expanded PVC moves noticeably with temperature, so long outdoor panels need slotted fixings.
• For non standard sizes, ACM is cheaper per square inch than aluminum: 0.11 against 0.14 dollars single sided.