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FRstop Fire Rated Cavity Stop Sock
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Application

  • To restrict the spread of flames within external masonry.
  • To further minimize the effect of flanking noise pollution at wall junctions.

Description

Fire-rated thermal and acoustic cavity stop sock.


Features and benefits:

  • FRstop cavity stop socks are lengths of low resin, non-combustible, rockfibre mineral wool sleeved in 35 µm polythene for on-site weather protection.
  • One-hour fire integrity and minimum 15-minute insulation.
  • Polythene encapsulated cavity stop sock.
  • Available in standard widths of 50, 75, 85, 90, 100, 115, 125 and 150 mm.
  • Also available to suit cavity widths of up to 300 mm.
  • Special cavity widths are available on request up to 300 mm.
  • Meets the requirements of the Robust Detail, Approved Document B and NHBC Standards.
  • Boxed in smaller quantities for convenience.


Quality:

  • Satisfies all NHBC requirements.
  • Complies with all relevant Building Regulations.
  • Meets all relevant British Standards.
  • LABC registered detail.
  • Independently tested to BS EN 1366-4:2006 +A1:2010.

General information

Shape

Rectangle

Color

Blue

Material

Mineral wool

Rockfibre; thermal conductivity: 0.037 W/m·K

Size

1200 x 65 x 65 mm

1200 x 85 x 85 mm

1200 x 100 x 85 mm

1200 x 110 x 100 mm

1200 x 130 x 100 mm

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Uniclass

Pr_25_80_81_51 Mineral wool fire-stoppingPrimary

CAWS

P12/360 Mineral wool rigid batts

P12/40 Mineral wool rigid batts

Specification data - Mineral wool fire-stopping Enhanced data

Material

-

Type

Rigid.

Facing

35 µm polythene (blue).

Fire performance

One-hour fire integrity; minimum 15-minute insulation.

Cavity width

50 mm.

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