Deciding between a cellular block (AAC) and a ceramic block is crucial for energy performance, comfort and budget. Both are proven masonry options, but they differ in insulation, weight, acoustics and handling. Below you’ll find a concise comparison plus practical tips for choosing the best option for your project.
At a glance
- AAC (cellular): 🔋 high insulation • ⚖️ lightweight • 🧰 easy to cut/shape • 🔥 A1 non‑combustible
- Ceramic block: 🧱 very robust • 🔇 strong acoustics • 🌦️ weather‑resistant • 🔥 A1 non‑combustible
What is a Cellular Block (AAC)?
Cellular block (autoclaved aerated concrete, AAC) is a porous material made from cement, sand, water and a foaming agent that creates air pockets. It’s widely used for load-bearing and partition walls in single-family homes, multi-unit housing and light industrial buildings — especially in energy-efficient and passive houses.
Key properties of AAC:
- 🔋 Excellent thermal insulation thanks to low thermal conductivity.
- ⚖️ Lightweight — faster installation and easier transport/handling.
- 🔥 Non-combustible — strong contribution to fire safety.
- ♻️ Recyclable & resource-efficient production in many plants.
- 🔇 Good acoustic performance for typical residential needs.
ℹ️ For background reading, see this external technical overview of AAC (opens in a new tab).
external technical overview of AAC
What is a Ceramic Block?
Ceramic blocks are formed from clay and fired at high temperature. They’re commonly used for load-bearing walls, partitions and foundations in residential and commercial builds, offering robust, durable envelopes.
Key properties of ceramic blocks:
- 🔋 Very good thermal insulation in porous variants.
- 🔥 Non-combustible — excellent fire safety.
- 🌦️ High durability against weather and environment.
- 🌱 Natural raw materials, supporting sustainable choices.
- 🔇 Strong acoustic insulation (mass + geometry).
Cellular vs Ceramic — quick comparison
| Criterion | Cellular Block (AAC) | Ceramic Block |
|---|---|---|
| Thermal insulation | Very high (great for low‑energy builds) | High (porous types perform well) |
| Weight / handling | Lightweight, easy to cut/shape | Heavier, very robust on site |
| Acoustic insulation | Good for most residential needs | Very good (mass + geometry) |
| Fire behaviour | Non‑combustible | Non‑combustible |
| Structural capacity | Adequate for designed loads | Very high, excellent load‑bearing |
| Typical use cases | Energy‑efficient housing, fast builds | Robust shells, multi‑storey, high acoustics |
When to choose which?
Choose AAC (🔋) if…
- your priority is maximum insulation and speed of work,
- you want light elements for easier logistics and handling,
- you’re targeting low‑energy / passive performance.
Choose Ceramic (🧱) if…
- you need very high structural capacity and acoustic comfort,
- exposure to harsh weather and mechanical wear is expected,
- you prefer heavier, highly robust masonry.
Practical tips & common mistakes
- 🧩 Detail the junctions (lintels, reveals, slab edges) — that’s where heat losses love to hide.
- 🧱 Specify system components (mortars, ties, insulation) recommended by the manufacturer.
- 🛠️ Plan penetrations and chases early to avoid excessive cutting and acoustic bridges.
- 💧 Confirm moisture management (DPCs, caps, temporary protection) during construction.
- 🔌 Coordinate with MEP to keep performance (thermal/acoustic) intact.
Cost & logistics
Material choice affects transport weight, pallet counts and installation time. We can help with order consolidation, export packing and insured transport to Ireland/UK.
- Explore warehousing options → /services/warehousing
- Ready to spec your wall system? → /contact
Summary
Both cellular (AAC) and ceramic blocks deliver safe, modern envelopes. Pick AAC for top insulation and speed; pick ceramic for maximum robustness and acoustics. If you’d like help selecting, sourcing and shipping the right system for your project, contact us — we’ll prepare options and a tailored quotation.