Knauf AQUAPANEL® Cement Board Indoor is a tough impact-resistant glass-fibre-reinforced cement tile backer for use in wet & humid areas. At 11kg/m 2 the new board is 25% lighter making the installation easier & faster than before. A bending radius of 1m can be achieved without the need to cut the board into strips. AQUAPANEL® is also ideal when it comes to withstanding high temperatures making it ideal to be used near log burning stoves that require surrounding walls that can withstand high temperature & are non-combustible. AQUAPANEL® Indoor is the ideal substrate for non-flammable & heat resistant surface coatings & finishes as it will not warp shrink or exp&.