Intufire® Acrylic

Intufire® Acrylic

Hodgson Sealants

One-part fire-resistant and acoustic rated joint acrylic sealant, suitable for horizontal and vertical joints with up to four hours fire resistance, tested to BS 476-20 and BS EN 13666-3 with additional guidelines from BS EN 1366-4.

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Application

  • Sealing joints, voids and irregular holes where fire resistance up to four hours is required.
  • For perimeter sealing of internal, fire rated screens, partitions, service penetrations and door or window frames.
  • Suitable for sealing joints, voids and irregular holes in fire walls, partitions, door architraves, service penetrations, floors and other structures.
  • To maintain integrity when sealing around pipes, services and cables.
  • For bedding of hinges and locks in fire doors. Sealing fire rated ductwork.
  • Consult literature for further application details.

Description

A waterborne, one-part fire-resistant and acoustic rated joint sealant which provides a firm, flexible seal to joints in a wide variety of fire-rated structures where fire resistance up to four hours is required. Its intumescent properties cause the sealant to swell up and char in the presence of heat, preventing the spread of smoke and fire through the joint.

Features and benefits:

  • Good adhesion to timber, plasterboard, masonry, blockwork, plaster, concrete and many other common building surfaces.
  • Formulated using an acrylic emulsion to provide a firm seal whilst retaining a degree of flexibility.
  • Up to four hours' fire resistance.
  • Reduces sound transmission in joints.
  • Suitable for horizontal and vertical joints without compromising fire rating performance.
  • Joint movement capability of ±12.5%.
  • Over-paintable with solvent and water based paints.
  • Will not support combustion.
  • Water based, solvent and halogen free.
  • For use in joints up to 50 mm.
  • Non-flammable.

Applications:

  • Sealing joints, voids and irregular holes where fire resistance up to four hours is required.
  • For perimeter sealing of internal, fire rated screens, partitions, service penetrations and door or window frames.
  • Suitable for sealing joints, voids and irregular holes in fire walls, partitions, door architraves, service penetrations, floors and other structures.
  • To maintain integrity when sealing around pipes, services and cables.
  • For bedding of hinges and locks in fire doors. Sealing fire rated ductwork.
  • Consult literature for further application details.

General information

Uniclass 2015

Pr_30_31_76_02 Acrylic construction joint sealantsPrimary

CAWS

P12/390 Sealant

null Sealant – fire-resisting acrylic

Product range

Fire Rated Range

Specification data - Acrylic construction joint sealants

Product Reference

Intufire® Acrylic

Standard

To BS EN ISO 11600, BS 476-20, BS EN 13666-3, BS EN 1366-4, BS EN ISO 140-3

Third-party certification

Consult manufacturer

Type

Waterborne, one-part, acrylic

Class

F-12.5-P to BS EN ISO 11600

For both sizes.

Colour

Grey

White

Fire performance

Intumescent seal with fire resistance up to four hours

Standard product features

Technical characteristics:

  • Adhesion: Good adhesion (when applied to wood, plaster, plasterboard, blockwork).
  • Base technology: Acrylic emulsion.
  • Chemical resistance: Fair to dilute acids and alkalis.
  • Curing system: Dries through evaporation.
  • Hardness (Shore A 25°C): 50.
  • ISO 11600 classification: F-12.5-P.
  • Mould resistance: Contains a fungicide.
  • Movement accommodation: ±12.5%.
  • Service temperature range: -15°C to +70°C.
  • Shrinkage: <25%.
  • Specific gravity: 1.56–1.60 g/cm³.
  • Slump: Nil.
  • Staining: Nil.
  • Ultraviolet resistance: Good.
  • Volatile content: <25%.
  • Acoustic rating (to BS EN ISO 717-1): 40(-3;-8)dB Rw(C;CTtr).
  • Application temperature range: 5–30°C.
  • Curing rate: No curing reaction takes place. Dries through evaporation.