AAC Products
AAC Roof Panels
AAC roof panels are reinforced AAC elements used in engineered roof assemblies where lightweight construction, thermal performance, and coordinated installation planning are important. MHE Group is a global AAC producer producing and delivering AAC building systems at its associated AERCON plant, backed by 40+ years of AAC engineering, factory development, installation, and project delivery expertise.
When to choose Roof Panels
Choose roof panels for roof decks spanning between bearing walls, beams, or a steel frame. They provide a non-combustible, insulating roof deck in one element, ready for the roofing system. For floors and decks that carry occupancy loads, AAC slab panels are used instead.
Applications
- Engineered roof assemblies
- Low-rise and mid-rise AAC building systems
- Roof systems requiring coordinated panel layouts
- Projects requiring technical documentation before procurement
Technical data (ICC-ES ESR-1652)
The AERCON plant in Haines City, Florida, which produces the AAC products MHE Group supplies in the United States, holds ICC-ES Evaluation Report ESR-1652 for AERCON reinforced AAC panels (reissued May 2026, valid through May 2027). The values below are quoted from Table 2 of that report. They are material design values for strength category AC4, not whole-wall or whole-assembly ratings; the final design is confirmed by the project engineer.
| Property | AC4 |
|---|---|
| Nominal dry density | 40 pcf (600 kg/m³) |
| Minimum compressive strength, f′c | 626 psi |
| Allowable compressive strength | 157 psi |
| Allowable flexural compressive strength | 209 psi |
| Allowable flexural tensile strength | 24 psi |
| Allowable shear strength | 17 psi |
| Modulus of elasticity, E | 360,000 psi |
| Coefficient of thermal expansion | 4.4 × 10⁻⁶ /°F |
| Thermal conductivity, k≈ 0.16 W/m·K | 1.11 Btu·in/(ft²·h·°F) |
| Thermal resistance per inch, R/in (computed as 1 ÷ k)Material value, not a whole-assembly R-value | ≈ 0.90 |
| Design dead weight | 49 pcf |
Fire resistance
- Reinforced floor and roof panels at least 8 in (203 mm) thick and 2 ft wide: 4-hour restrained assembly rating, and 1-hour unrestrained rating when the reinforcement has at least 7/8 in (19.1 mm) cover (ASTM E119).
- Partition panels 4 in (102 mm) thick, category AC4: 3-hour fire-resistance rating (nonbearing).
- The material is noncombustible per ASTM E136.
Further reading: AAC fire safety and what AAC is. For wider comparisons, see fire-resistant wall systems, building materials for hurricane-prone areas and lightweight vs traditional concrete construction.
Product sizes listed in ESR-1652
| Product | Maximum length | Thickness | Width |
|---|---|---|---|
| Roof Panel | 19 ft 6 in | 8, 10, 12 in | up to 24 in |
- Allowable deflection: roof panels L/180 under total load and L/240 under live load; floor panels L/240 under total load and L/360 under live load.
- Reinforcing bars 3/16 to 1/2 in diameter with anticorrosion treatment per ASTM C1694 and minimum 1/2 in AAC cover. Panel span, load, and reinforcement are designed per project.
Source: ICC-ES ESR-1652 (PDF), Tables 1 and 2, held by AERCON Florida, LLC, Haines City, Florida. Compliance basis: ASTM C1386 and C1694 (material and reinforcement), ASTM E119 (fire tests), ASTM E136 (noncombustibility), for the IBC and IRC. Report status can be checked at icc-es.org; values on this page are updated when the report is reissued.
Technical Considerations
- Panel span, bearing, roof slope, waterproofing, diaphragm behavior, and connection details must be confirmed by design professionals.
- Weather protection and storage planning are important before installation.
- Roof panels should be coordinated with wall systems, openings, and roof-edge details.
Design and Installation Notes
- Confirm roof assembly requirements before product selection.
- Coordinate panel layout with drainage, waterproofing, and service penetrations.
- Request current product documentation and handling guidance before ordering.
Completed projects
Mitsubishi Polysilicon Plant, Theodore, Alabama: AAC roof panels together with AAC floor and wall panels.
SEB Civil Engineering building, Georgia Tech, Atlanta, Georgia: AAC slab and roof panels on load-bearing AAC block walls.
Knoxville Wholesale Furniture, Knoxville, Tennessee: A 42,000 sq ft retail building with an AAC wall and roof system.
More projects are listed in the North American AAC project reference list.
Related AAC Product Paths
- AAC Slab Panels
- AAC Vertical Wall Panels
- Global Supply
- Reinforced AAC panels overview
- View the complete AAC product catalog
- Request global supply and export planning
Request a quote for Roof Panels
Request a quote, product documentation, supply information and technical review support for aac roof panels from MHE Group.
Request a QuoteFrequently Asked Questions
What are AAC roof panels used for?
AAC roof panels are used in engineered roof assemblies where reinforced AAC panel elements are appropriate for the span, bearing, and roof-system design.
Do roof panels include waterproofing?
Waterproofing is a roof assembly requirement and should be designed and specified separately from the AAC panel product.
How should roof panels be planned for supply?
Project teams should confirm panel layout, lifting access, storage conditions, and roof assembly details before supply scheduling.
What is the difference between AAC roof panels and slab panels?
Both are reinforced spanning panels. Roof panels are designed for roof loads and the roofing build-up; slab panels are designed for heavier floor loads. Thickness and reinforcement are confirmed per project by the engineer.