[zkn]

I've made some research and for what it's worth, here's an overview of some mineral wool products that should be commonly available in most countries in Europe and to my knowledge can be used as OC substitutes.

PAROC: COS 5
Type: semi-rigid
AFR, Pa: 22 222
WxL, mm: 600x1200 (alt. 600x1500)
Thickness, mm: 30-140 (100-180)
Density: 60-80 kg/m3

PAROC: COS 10
Type: rigid
AFR, Pa: 28 571
WxL, mm: 600x1200
Thickness, mm: 30-180
Density: 100 kg/m3

PAROC: COS 15
Type: rigid
AFR, Pa: 66 667
WxL, mm: 600x1200
Thickness, mm: 30, 50, 100, 120, 140, 160
Density: -

PAROC: FPS 14
Type: rigid
AFR, Pa: 20 000
WxL, mm: 600x1200
Thickness, mm: 20-120
Density: -

PAROC: UNS 37
Type: flexible
AFR, Pa: 7 629
WxL, mm: 565x1320 (alt. 870x920; 610x1170; 260x1320)
Thickness, mm: 30-200 (100 - 175; 50 - 175; 50)
Density: 26 kg/m3

PAROC: UNS 35
Type: flexible
AFR, Pa: 9 091
WxL, mm: 565x1320 (alt. 870x920; 610x1170)
Thickness, mm: 30-175 (100 - 200; 50 - 175)
Density: -



ROCKWOOL: Multirock 35
Type: semi-rigid
AFR, Pa: 10 000
WxL, mm: 1000x565 (alt. 1000x610)
Thickness, mm: 50, 75, 100, 120, 150, 200 (50, 75, 100, 120, 150, 200)
Density: 35 kg/m3

ROCKWOOL: Rockton
Type: semi-rigid
AFR, Pa: 16 667
WxL, mm: 1000x600
Thickness, mm: 50, 80, 100, 120, 150
Density: 50 kg/m3

ROCKWOOL: Fasrock
Type: rigid
AFR, Pa: 33 333
WxL, mm: 1000x500
Thickness, mm: 20, 30, 50, 70
Density: 135 kg/m3


ROCKWOOL: Industrial Batts Black
Type: rigid
AFR, Pa: 14 286
WxL, mm: 600x1200
Thickness, mm: 15, 20, 30, 50
Density: 60 kg/m3


As you can see, some of the above are more similar to OC-703/705 some are less, but nevertheless I think all of them have use in some situations.

with kind regards.