100mm wide ARC OSCBPLUS25 - Open State Cavity Barrier for External Ventilated Cavity Walls - 75mm x 1200mm

100mm wide ARC OSCBPLUS25 - Open State Cavity Barrier for External Ventilated Cavity Walls - 75mm x 1200mm
- Product Code: A1-5544
- Delivery Time: 2 - 3 working days
- Brand: ARC Building Solutions
- Model and Size: OSCBPLUS25 - 75mm x 100mm x 1200mm
Our ratings on 31-03-2025:

4.7 out of 5 - Excellent


4.8 out of 5
100mm wide ARC OSCBPLUS25 - Open State Cavity Barrier for External Ventilated Cavity Walls - 75mm x 1200mm
Length: 1200mm
Width: 100mm
Thickness: 75mm
Fire Protection (Resistance to Fire): 120minutes
Sleeve Colour: Red with a blue strip

Note: The depth of the cavity insulation must never exceed the depth of the mineral wool element of the open state cavity barrier. Do not remove the cover.
- For 25mm air gap for ventilated cavity,
- Up to 120 minutes fire integrity,
- Quick and easy installation,
- Robust solution,
- Fixing brackets included,
- Fire rating: 120 minutes,
- Insulation performance: 120 minutes,
- Installed horizontally.
- Fold the fixing brackets in accordance with fixing specifications (see pdf table A1).
- Fix the fixing brackets to the inner leaf using appropriate non-combustible fixings for the substrate.
- The vertical leg of the brackets should be fixed so that they extend above the cavity barrier.
- Push fit the cavity barrier onto the brackets, ensuring the brackets penetrate the barrier centrally through its 75mm depth.
- Cut lengths of barrier >=200mm length must include 2 fixing brackets.
- Cut lengths <200mm must include 1 fixing bracket centrally.
- The fixing bracket should penetrate at least 75% of the depth of the barrier, except where the full size of the bracket is already smaller than this.
- The horizontal leg should also be at least 25mm short of the intumescent layer when the barrier is fully mounted on to the brackets.
- Where the horizontal open state barrier meets the vertical full fill barrier, the vertical barrier must be continuous with the horizontal ARC OSCB tightly butted to each side.
- Ensure the rear face of the barrier is tightly fitted against the inner substrate without gaps.
- Individual lengths should be butt jointed tightly together with no gaps.
- Ensure both the rock mineral wool and intumescent components are butted together tightly.
- At the extreme end of a run, or at corners, the end of the cavity barrier must tightly abut the substrate with no gaps.
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