NBS Source
CP 638 HS FS

Application

  • Suitable for concrete, aerated concrete and masonry substrates and unreinforced spans up to 1600 mm.
  • Used with cables and cable trays, combustible pipes, non-combustible pipes and ductwork dampers.

Description

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


Features and benefits:

  • Quick setting.
  • Expands when set to provide smoke seal.
  • Good adhesion to steel, concrete and masonry.
  • Can be mixed to various consistencies, from pourable to trowelable.
  • Fire resistance rating of up to four hours.

General information

Color

Grey

Material

Gypsum

Gypsum based mortar.

Shape

Formless

Uniclass

Pr_20_31_53_31 Fire-resisting mortarsPrimary

CAWS

P12/340 Intumescent mortar

P12/37 Intumescent mortar

Specification data - Fire-resisting mortars Enhanced data

Material

Gypsum based.

Fire resistance

240 minutes.

Up to four hours, dependent on substrate and application.

Density

1450–1600 Kg/m³.

Setting time

20 minutes.

Drying time

Working time (approximate).

10 minutes.

Application temperature

5–45°C.

Temperature resistance

-20 to +100°C.

Compressive strength - 1 day

8–12.5 N/mm².

Compressive strength - 28 days

17–25 N/mm².

Similar products from Hilti (Gt Britain) Ltd

CP 636

CP 636

CP 637

CP 637