Ceiling employment below wood or steel beams with and without sound requirements
1 x 12 mm or 2 x 9 mm Permoxxboard.
Handling 1 x 12 mm wood
Sheet 12mm, riveted C-C 100mm on wooden rafters. Between the rafters wooden strips 45 x 45 C-C 600mm, blunt seams on the wooden laths. Put rock wool 35kg/m3 40mm between the beams.
1st sheet 9mm screwed, C-C 300mm on wooden strips, 2nd sheet 9mm sheet sight side riveted on 1st sheet (covering the seams of 1st sheet), distance between screws 150mm. Staples, length 22 mm. Put rock wool 35kg/m3 40mm between the beams
For further finishing of the sight consult the processing advice on our website. www.permoxx.com
Seams 2 – 4 mm have always to be glued with fire-resistant glue or kit