How to fix 'Laine de Roche/Verre' panels

[jill&paul]

Hi,

Does anyone know how are these panels fixed to the joists/timbers in my roof please?

Thanks

Paul.

[Clair]

I don't know if this is going to help... but I have attached some nylon string in a zig-zag on the underside of the beam to support the layer of insulation.

This was done in an unused cellar where we stock seldom needed items and where the ceiling is flat not sloping.

[Nick Trollope]

Or are you referring to rockwool or fibreglass backed plasterboard panels (they can't be both). In which case I'd just use the appropriate placo screws. Ort he appropriate clips.

Or something else.