Home › Guides › What is AAC? A builder's guide and glossary
AAC (autoclaved aerated concrete) is a lightweight precast concrete made into blocks and steel-reinforced panels. In Australian houses it is mostly used as 50mm or 75mm facade panels screwed to top hats over the frame, then rendered.
Facadia supplies AAC panels from Hebel (CSR), Nasahi, Eastland and Bestari, all 600mm wide, in 50mm and 75mm wall panels and 75mm floor panels. Each brand is a separate system with its own CodeMark certificate, installation guide and matching accessories.
Panel types Facadia stocks
| Panel | Per m² ex GST | Per m² inc GST | Lengths (mm) | Pack | CodeMark (from Facadia technical page) |
|---|---|---|---|---|---|
| Bestari DX Panel 50mm | $28.00 | $30.80 | 2400, 2550, 2700, 2850, 3000, 3300 | Pack of 15 | Check pending |
| Bestari DX Panel 75mm | $36.00 | $39.60 | 2400, 2550, 2700, 2850, 3000, 3300 | Pack of 10 | Check pending |
| Eastland AAC Floor Panel 75mm | $42.00 | $46.20 | 1800 | Sold per panel | Not listed |
| Eastland AAC Panel 50mm | $27.50 | $30.25 | 2400, 2550, 2700, 2850, 3000 | Pack of 15 | CM40381-I02-R00 |
| Eastland AAC Panel 75mm | $37.00 | $40.70 | 2400, 2550, 2700, 2850, 3000, 3300 | Pack of 10 | CM40381-I02-R00 |
| Hebel PowerFloor 75mm | $49.50 | $54.45 | 1800 | Sold per panel | Not listed |
| Hebel PowerPanel 50mm | $30.00 | $33.00 | 2400, 2550, 2700, 2750, 2850, 3000 | Pack of 15 | CM40233 Rev 2, CM40312 |
| Hebel PowerPanelXL 75mm | $39.50 | $43.45 | 2400, 2550, 2750, 2850, 3000, 3300 | Pack of 10 | CM40049 Rev 1 |
| Nasahi AAC Panel 50mm | $28.50 | $31.35 | 2550, 2700, 2850, 3000 | Pack of 15 | CM40326, CM40411, CM40327 |
| Nasahi AAC Panel 75mm | $36.00 | $39.60 | 1800, 2200, 2400, 2700, 3000, 3300 | Pack of 10 | CM40326, CM40411, CM40327 |
Glossary
- AAC
- Autoclaved aerated concrete: a lightweight precast concrete made into blocks and steel-reinforced panels. Facadia sells AAC external wall panels in 50mm and 75mm thicknesses and 75mm floor panels, 600mm wide.
- Hebel
- A brand of AAC products made by CSR Hebel (North Ryde NSW). Facadia supplies Hebel PowerPanel50, PowerPanelXL and PowerFloor, plus Hebel-range accessories.
- PowerPanel50
- Hebel's 50mm steel-reinforced AAC external wall panel for houses and low-rise external walls, fixed to top hats over the frame. Covered by CodeMark CM40233 Rev 2 and, for high-rise facades, CM40312. Installed to guide HELIT181.
- PowerPanelXL
- Hebel's 75mm AAC external wall panel. Covered by CodeMark CM40049 Rev 1 (PowerPanelXL, PowerProfile and PowerPattern external walls) and installed to guide HELIT016.
- Top hat
- A steel batten with a top-hat profile fixed over the wall frame. AAC panels are screwed to the top hats, so they set the cavity and the fixing line. Facadia sells top hats in 4.8m lengths in 24mm and 35mm depths.
- CodeMark
- A voluntary Australian building product certification scheme. A current certificate shows the product meets the listed NCC/BCA requirements when used as described.
- CMI Certification
- The JAS-ANZ accredited certifying body that issued the Hebel, Nasahi and Eastland AAC CodeMark certificates Facadia lists. Its public register lets you check whether a certificate is current.
- NCC
- The National Construction Code, which sets the minimum requirements for building work in Australia, including the BCA. CodeMark certificates state which NCC/BCA requirements a system meets.
- Control joint
- A planned break in an AAC facade that lets the wall move without cracking. Facadia's inspection checks vertical and horizontal control joints, and top hat breaks at control joints, against the manufacturer's guide.
- Hiab
- A truck-mounted crane used to unload heavy goods. Facadia quotes crane or Hiab unloading on request as part of freight.
- SWMS
- Safe Work Method Statement: a document setting out how high-risk construction work will be done safely. In Facadia's builder portal, crew acknowledge the SWMS when they sign on. Each SWMS must be adapted to the site by the PCBU or installer.
- Take-off
- A list of material quantities measured from building plans. Facadia does AAC take-offs from uploaded plans: panels, top hats, adhesive and screws.
- Split pack fee
- A single $50.00 ex GST ($55.00 inc GST) charge per line when a panel quantity is not a whole number of packs.
- Base sealer
- A sealer coat applied to AAC panels before render, sold by Facadia in the Hebel range (5L) and the Eastland range (5L).
- Direct fix clip
- A clip that fixes battens directly to framing. Facadia lists the Hebel direct fix clip (for 24mm and 35mm top hats) and the Rondo 314 direct fix clip.
- Party wall bracket
- A bracket used where AAC walls meet a party (shared boundary) wall. Facadia lists the Hebel aluminium party wall bracket.
- DPC
- Damp proof course: a moisture barrier at the base of a wall. Facadia's inspection checks the DPC at the base, ideally photographed before panels hide it.
- BAL
- Bushfire Attack Level: the bushfire exposure rating of a site. Whether an AAC facade suits a BAL depends on the full system, so check the certificate and the manufacturer's bushfire guidance.
- Ex GST and inc GST
- Ex GST is a price before the 10% goods and services tax; inc GST includes it. Facadia shows both on every price.
- PCBU
- Person conducting a business or undertaking: the work health and safety duty holder. On Facadia's portal, each SWMS must be reviewed and adapted to the site by the PCBU or installer.
Questions
Is AAC the same as Hebel?
Hebel is a brand of AAC made by CSR Hebel. Nasahi, Eastland and Bestari also make AAC panels. Each brand is its own certified system.
What thickness are AAC facade panels?
Facadia stocks 50mm and 75mm AAC wall panels, 600mm wide, and 75mm floor panels.
Do AAC panels need render?
AAC facade panels are rendered or coated. Facadia sells base sealers in the Hebel and Eastland ranges; follow the manufacturer's guide for the finish system.
Sources: Facadia technical resources (certificate list, last checked 24/10/2026) · Facadia AAC panel guides · Australian Building Codes Board (ABCB)
Last updated: 29/10/2026. General information only, not design or compliance advice. Prices change, so check the live product page.
