Knauf Insulation - Rocksilk® RainScreen OSCB25 Plus - Cavity Barrier
Verified by manufacturer 11 days ago
Rocksilk® RainScreen OSCB Plus is a horizontal cavity barrier manufactured from rock mineral wool, shrink wrapped with a reactive intumescent strip, for use in ventilated cavities up to 450 mm.
Application
Rocksilk® RainScreen OSCBs are used as horizontal open state cavity barriers in buildings with ventilated cavities.
Rocksilk® RainScreen OSCBs contain a reactive intumescent strip which allows ventilation and drainage in a rainscreen cavity. The strip will expand in the event of a fire to fully seal the cavity providing fire resistance, preventing passage of smoke and flames.
Rocksilk® RainScreen OSCBs are also recommended for use against a steel, timber, masonry or reinforced concrete inner leaf where the construction has a ventilated cavity.
Rocksilk® RainScreen OSCBs should be partnered with Rocksilk® RainScreen Firestop Slab which is installed vertically, and Rocksilk® RainScreen Slabs for a complete rainscreen cavity system.
Description
Rocksilk® RainScreen OSCB Plus is a horizontal cavity barrier manufactured from rock mineral wool, shrink wrapped with a reactive intumescent strip, for use in ventilated cavities up to 450 mm. It forms part of a system with Rocksilk® RainScreen Slabs which provides fire resistance for up to 120 minutes integrity and 90 minutes insulation (E120 I90).
General information
Color | Blue |
Finish | Other Guidance for specification option: Blue shrink wrap with coloured tape. Tape colour reflects cavity barrier performance. |
Material | Rock mineral wool |
Shape | Rectangle Guidance for specification option: Cavity barrier. |
Length | 1200 mm |
Width | 100 mm 400 mm |
Height | 100 mm |
Uniclass | |
CAWS | F30/155 Partial fill cavity insulation F30/12 Partial fill cavity insulation P10/70 Sleeved small cavity barriers P10/420 Sleeved mineral wool small cavity barriers |
Product range |
Specification data - Sleeved mineral wool cavity barriers
Third-party certification | Made in Britain. |
Cavity barriers | |
Sleeves | Polythene, blue. |
Residual cavity width | 100-450 mm. |
Fire performance | E120 I120. |
Durability | Odourless, rot proof, non-hygroscopic, do not sustain vermin and will not encourage the growth of fungi, mould or bacteria. The products will have a life equivalent to that of the roof structure in which they are incorporated. |
Sustainability data
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 35 % Guidance for specification option: Mineral wool only. |
BIM objects
NBS BIM Object Standard
This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.
Find out more about the NBS BIM Object Standard.
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
 IFC | - | 1 |
Literature
Knauf Insulation Rocksilk® RainScreen OSCB - Product Datasheet
Knauf Insulation Rocksilk® Rainscreen OSCB - Installation Guide