Why Compare HPL and Metal?
Whether youâre cladding a new office in Seoul or a cafĂ© in Busan, youâll likely choose between High-Pressure Laminate (HPL) and metal composite panels. Each looks sleekâso letâs see which saves weight, money, and hassle.
1. How Heavy Are They?
| Panel Type | Typical Weight | Why It Matters |
|---|---|---|
| HPL (8 mm) | â 8â12 kg / mÂČ | Lighter frame, smaller anchors, easier rooftop lifting. |
| Aluminium Composite (4 mm) | â 7 kg / mÂČ | Also light, but can dent on busy streets. |
| Solid Aluminium (3 mm) | â 14 kg / mÂČ | Heavier; may need stronger brackets. |
| Steel Sheet (0.7 mm + sub-girder) | â 18 kg / mÂČ | Heaviest; higher seismic load, harder to cut on site. |
Take-away: HPL matches aluminium composite on weight and beats solid metal or steel.
2. What About Cost?
| Cost Item (per mÂČ, Korea 2025 avg.) | HPL Panel | Aluminium Composite | Solid Aluminium |
|---|---|---|---|
| Material | â©70 000 | â©58 000 | â©85 000 |
| Frame & Fixings | â©22 000 | â©25 000 | â©35 000 |
| Labour | â©18 000 | â©20 000 | â©25 000 |
| Total | â©110 000 | â©103 000 | â©145 000 |
Numbers vary by finish and order size.
HPL costs a little more than aluminium composite but less than solid aluminiumâand frame savings help close the gap.
3. Fire Ratings Made Simple
| Product | Typical Rating (EN 13501-1) | Korean Code Use |
|---|---|---|
| Samrat FR-HPL | B-s1,d0 (low smoke, no flaming drops) | Allowed on mid-rise and public buildings. |
| Aluminium Composite (PE core) | E (burns fast) | Not allowed on many towers since 2020. |
| Aluminium Composite (FR core) | B-s2,d0 | OK but still more smoke. |
| Solid Aluminium | A2 | Non-combustible, but needs mineral-wool backing. |
Bottom line: HPL with a B-s1,d0 certificate clears most Korean fire checksâsafer than PE-core ACP.
4. Extra Points: Heat, Noise & Dents
- Thermal Bridging â Metal rails carry heat indoors; HPL rails can sit on plastic pads, cutting heat flow.
- Acoustics â HPL dampens bus-stop noise better than thin metal skins.
- Dent Resistance â HPL shrugs off scooter bumps; aluminium dents easily.
Quick Decision Guide
| If You Need⊠| Choose |
|---|---|
| Lowest price on basic storefront | Aluminium composite (FR core). |
| Classy stone or wood look with good fire rating | HPL. |
| Non-combustible label for a high-rise | Solid aluminium + mineral wool. |
| Tough skin for busy street corners | HPL (better dent resistance). |
Key Take-Aways
- Weight: HPL is as light as composite aluminium.
- Cost: Slightly higher than ACP, far lower than solid aluminium.
- Fire: Samrat HPL = B-s1,d0, beating PE-core panels.
- Extra perks: Better dent resistance and noise control.
Pick the panel that fits your project, budget, and safety classâand get that permit stamped the first time.