Building boards from Marley Eternit can outperform the requirements of the Part E Regulations tests have revealed.
The manufacturer’s fibre cement Tileboard, which was specially designed for damp and wet areas such as domestic and commercial bathrooms, shower rooms and kitchens, and general-purpose, external grade Paintboard were tested against the acoustic criteria for both separating and internal walls.
Both Tileboard and Paintboard exceeded the minimum 43dB criteria for separating walls in (change of use) dwelling houses and flats while Paintboard and (two thicknesses of) Tileboard met that of 45dB for new build. They also met the minimum 43dB criteria for separating walls between rooms for residential purposes.
The Marley Eternit building boards also exceeded the minimum criteria for partition walls in hospitals, schools and offices.
A single layer of 12mm Tileboard either side of a timber frame construction achieved 44dB using two layers of 50mm insulation while a double layer of Tileboard either side of the same construction with two layers of insulation achieved 49dB.
The 9mm Paintboard was only tested in single layers and in a timber frame construction with two layers of insulation achieved 47dB then in a steel framed construction with two layers of insulation a substantial 52dB.