Twinroll
ROCKWOOL Twinroll is stone wool insulation. The thermal insulation is non-combustible and has additional acoustic properties to absorb sound in roof and internal spaces.
Manufactured as one 200mm roll, ROCKWOOL Twinroll is pre-cut horizontally to create the option of two 100mm rolls as one package. Twinroll is supplied on pallets and protected by waterproof covering allowing it to be stored outside.
The insulation solution is suitable for roof spaces in all building types, or can be used to overlay suspended ceilings. ROCKWOOL Twinroll does not react with any metal components in lofts, nor does it cause loss of plasticiser from PVC cabling and pipes.
Specification
| NBS Clause | Length (mm) | Width (mm) | *Approved thickness range (mm) |
| P10-125, P10 135, P10-140, P10-170, P10-190, P10-217, P10-220, P10-240, P10-250 | 2750 | 1200 | 100 -150 |
*Thickness options may be subject to a minimum production volume. Speak to the specification team for guidance.
Standards and Certification
| Product standards |
BS EN 13162, Keymark, Kitemark |
| CE Marking | CE Marked |
Technical Properties
| Reaction to fire (Euroclass) | Euroclass A1 |
| Thermal conductivity | 0.044 W/mK |
| U-Value (W/m2K) |
ROCKWOOL Roll between joists (mm) |
ROCKWOOL Roll over joists (mm) |
Total insulation thickness (mm) |
| 0.17 | 100 | 150 | 250 |
| 0.16 | 100 | 170 | 270 |
| 0.14 | 100 | 200 | 300 |
| 0.12 | 100 | 250 | 350 |
| 0.11 | 100 | 300 | 400 |
CAD Drawings
Download CAD Drawings here
