Flat roofs make up a significant amount of the world’s skylines. Whether industial units, commercial venues or residential dwellings, these buildings all take a differnet approach when it comes to their roofs - and each faces unique requirements that AQUAPANEL® Cement Board Rooftop has been designed to address by enhancing roofing system with a range of benefits:

  • Robustness
  • Fire protection
  • Weather resistance
  • Lifetime costs

AQUAPANEL® Cement Board Rooftop can be installed as a lightweight Cover with 6 mm or 12,5 mm Rooftop boards between the insulation and the waterproofing layer, or as a Substrate with 12.5 mm Rooftop board directly onto the steel deck. Each application can be used individually, or both can be combined in one roof construction – with either option bringing the benefits of AQUAPANEL® Cement Board Rooftop into your roof system.


Extra structural strength

AQUAPANEL® Cement Board Rooftop adds strength to the roof and the wider building. So, whether you need to mount heat, ventilation and air-conditioning units (HVAC) solar panels, exterior cleaning cages or other equipment, or you need to retain access for workers, you can be assured of the strength, safety and stability of your roof.

Protection against fire (flying sparks) from outside the building

Non-combustible (building material class A1) and protection from sources of fire outside the building, the cover board is a strong, robust and reliable first line of defence. Additionally it allows the use of components such as fire-resistant mineral wool, which substantially reduces the fire load of the whole system.

FM Approval Class 4470 Certification

We are pleased to announce that AQUAPANEL® Cement Board Rooftop 6 mm and AQUAPANEL® Cement Board Rooftop 12.5 mm are now FM approved as a cover board with mechanically attached membranes (class 4470 - Single-Ply, Polymer-Modified Bitumen Sheet, Built-Up Roof (BUR) and Liquid Applied Roof Assemblies for Use in Class 1 and Noncombustible Roof Deck Construction). The approval identification is PR461397. You can visit the RoofNav website to see more than 12000 different assemblies of Rootop FM approved boards.

Impact restistance

Your roof needs to cope with many impacts, from hailstones to footfall - even to heavy machinery stressing the roof surface with high point loads. Therefore the roof needs a high load-bearing capacity in particular for heavy concentrated loads - especially when less pressure-resistant insulations are applied. AQUAPANEL® Cement Board Rooftop is build to withstand it all, protecting both membrane and insulation.

AQUAPANEL® Technology is also integrated in the prefabricated composite insulation board from Knauf Insulation. This board spreads the loads across a wider area even during installation, and also reduces effort and labour, as there is no need to fix the board to the insulation on site.

Extended roof life

The strength and resistance of the cover board will invariably result in a longer roof life - and a lower total cost of ownership. No matter of the final design of the roof, whether it is a roof terrace, a green roof, or just rooftop pathways, you can trust it to perform, day in, day out. This means less maintenance or need for replacement, minimal problems over the system's lifetime, and a roof you can trust to last long and cost less overall.

Enhanced wind uplift performance

Provided by the whole roofing system, wind uplift performance is a vital factor in resistance - and the resilient cover board plays a crucial role here.

Separation layer

AQUAPANEL® Cement Board Rooftop serves as a separation layer, preventing blistering and compatibility issues between the membrane, adhesive and substrate.

Sooner weather resistance

Like all AQUAPANEL® Cement Board products, the substrate board is 100% water resistant, and mould and mildew resistant. Strong and robust, it's build to cope with whatever the weather can trow at it. Additionally, with installing the board directly onto the steel deck - together with a vapour barrier - a robust temporary waterproofing can be achieved even before the insulation and the waterproofing layer are mounted. This means that the building envelope is reliably closed sooner and the interior works can start earlier, which safes a lot of time and money for your project.

Noise reduction

The thickness and construction of AQUAPANEL® Cement Board Rooftop provides an effective barrier against external or internal noise, especially when insulation materials like PIR and EPS are used. For example rain noise can significantly be reduced inside the building.

Safe and efficient workplace

Providing a flat surface to install the vapour barrier or the waterproofing membrane, the board is designed for easy, problem-free installation even during peak periodes of material transport and construction traffic on top of the roof. For example the professional material transport on top of the roof is done with a lift-and-roller, which is very difficult on trapezodial steel decks. The flat surface of AQUAPANEL® Cement Board Rooftop guarantees an easier transport of material.*

*The transport with a hand pallet truck is not recommended

Protection against fire from inside the building

Protection against fire from inside plays an important role - especially for extensive roofs with a steel deck as substrate. Any spreading of the fire via the roof has to be prevented. Besides the use of non-combustible insulation materials, also thin vapour barriers with low fire loads (i.e. PE foil, aluminium) should be applied. Using the non-combustible AQUAPANEL® Cement Board Rooftop 12.5 mm as a substrate - and thereby bridging the low beads - those vapour barriers will be protected against piercing during the installation phase. This reliably prevents vapour diffusion into the roof construction from inside during the complete lifecycle of the flat roof.

Thinner roof constructions

Thinner roof designs are possible, because thinner layers of insulation can be applied facilitated by bridging the low beads of the steel deck with AQUAPANEL® Cement Board Rooftop.


Product datasheet
Product brochure

with technical details and installation guide


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