MP551 Timber Frame Cavity Barrier

MP551 Timber Frame Cavity Barrier and MP551 Timber Frame Party Wall Barrier are polythene enclosed stone mineral wool cavity barriers manufactured in sizes to suit customer specified cavity widths. MP551 Timber Frame Cavity Barriers assist in satisfying requirements of guidance documents such as Approved Document B and The Scottish Technical Handbooks. MP551 Timber Frame Cavity Barriers are suitable for both vertical and horizontal positioning to the edge of cavities such around openings, at compartment lines and to sub-divide cavities. MP551 Timber Frame Party Wall Barrier is suitable for use at party wall lines.

MP551 is stapled at 150 mm centres to the inner OSB substrate at designated positions prior to brickwork being erected which then compresses the barrier within the cavity creating a seal against smoke and heat transmission.

Features and benefits:

• Can be used for cavities from 35–150 mm.
• Wide range of cavities gives greater design scope
• Tested to BS EN 1366-4 for up to 60 minutes fire integrity (E).
• Achieves the desired fire performance for compartmentation.
• Tested at both mid-cavity and flush to apertures, as per the requirement of BS EN 1366-4.
• Suitable for vertical and horizontal applications for mid-cavity and around apertures such as doors and windows.
• Suitable for party wall cavities from 50–100 mm.
• MP551 Party Wall Barrier sizes permit flexibility in design.
• Closed state barrier.
• Assists in reducing flanking sound transmission between properties.