Siniat A1 shaftwall systems are designed to seamlessly interchange with the traditional Shaftwall components and construction method. The only differences include the use of A1-classified plasterboard (EN13501-1), 12.5mm Weather Defence boards to the corridor side, and 19mm Weather Defence board to the shaft side. 

For full details of the A1 Shaftwall system including installation guidance please refer to the Shaftwall section of the Siniat drywall manual.