CP 637
Application

  • Permanent fire seal of cables and cable tray, combustible pipes, and non-combustible pipes.
  • Medium/ large multiple penetrations in combination with other products (concrete/ masonry).
  • Suitable for unreinforced spans up to 800 mm.

Description

Fire resistant gypsum based mortar with thermal insulating and acoustic properties for sealing medium sized openings where further penetrations may be required.

Features/ Benefits:

  • Quick-setting - forms can be removed after as little as two hours.
  • Superior working properties - saves time.
  • Can be pumped, poured or trowelled - easy to form and apply.
  • Can be used in horizontal or vertical applications.
  • No shrinkage.
  • Fire resistance rating of up to four hours.

Applications:

  • Permanent fire seal of cables and cable tray, combustible pipes, and non-combustible pipes.
  • Medium/ large multiple penetrations in combination with other products (concrete/ masonry).
  • Suitable for unreinforced spans up to 800 mm.

Suitable substrates:

Concrete, aerated concrete and masonry.

General information

Uniclass 2015

Pr_20_31_53_31 Fire-resisting mortarsPrimary

CAWS

P12/340 Intumescent mortar

P12/37 Intumescent mortar

Specification data - Fire-resisting mortars

Product Reference

CP 637

Standard product features

Colour:

Grey.

Fire resistance:

Up to four hours, dependent on substrate and application.

Technical properties:

  • Density: 850–950 kg/m³.
  • Setting time (approximate): 60 minutes.
  • Working time (approximate): 30 minutes.
  • Compressive strength (maximum): 3.5–6 N/mm² (24 hours).
  • Expansion on setting (approximate):0.08%.
  • Application temperature: 5-45°C.
  • Temperature resistance: -20 to +100°C.
  • LEED VOC: 0 g/L.
  • Mould and mildew resistance (to BS EN ISO 846): Class 0.

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