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FireBlox™ Plus - Cavity Barrier

Verified by manufacturer 5 days ago

Grayson (GB) Ltd

Non-ventilated cavity barrier for vertical and horizontal applications.

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Application

Designed for use within external wall cavities of up to 450 mm, for both masonry-to-masonry and SFS-to-masonry configurations, including masonry support bracket and balcony stub details.

Description

FireBlox™ Plus is a non-ventilated cavity barrier composed of plain stone mineral wool, foil faced as standard, intended for installation within external wall cavities up to 450 mm, requiring 5 mm of compression when fitting, and compatible with both masonry-to-masonry and SFS-to-masonry applications, including masonry support bracket and balcony stub details, with a fire rating of up to EI120.

Features and benefits:

  • Foil faced as standard.
  • Suitable for external cavities up to 450 mm.
  • For vertical and horizontal applications in masonry-to-masonry and SFS-to-masonry assemblies.
  • Fire Reaction Classification to EN 13501-1 and Fire Resistance Classification to EN 13501-2.
  • Tested to BS EN 1366-4:2021.
  • Fire Rated up to 120 minutes integrity and insulation (EI120).
  • 5 mm compression required.

General information

Color

Silver

Finish

Foil

Material

Mineral wool

Shape

Rectangle

Length

1000 mm

Width

1200 mm

Height

100 mm

Guidance for specification option:

Depth.

Uniclass

Pr_25_80_81_51 Mineral wool fire-stoppingPrimary

CAWS

P12/40 Mineral wool rigid batts

P12/360 Mineral wool rigid batts

Specification data - Mineral wool fire-stopping

Classification data

Material

-

Standard

To BS EN 1366-4:2021.

Third-party certification

Certifire certification.

Type

Rigid.

Facing

Metal foil laminate.

Fire performance

Reaction to fire classification EN 13501-1 and fire resistance EN 13501-2.

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

20–26%.

Manufacturer guidance

Produced from renewable raw materials with zero ozone depletion potential (ODP).

Dimensions

1200 x 1000 x 100 mm.

Guidance for specification option:

Width x length x depth.

Bespoke.

Guidance for specification option:

Cut-to-size.

Consult manufacturer for details and insert requirements.

Fire rating

Up to EI 120, 120 minutes.

Guidance for specification option:

The exact level of performance will depend on the orientation of the Fireblox and on the construction of the external walls.

Cavity width

External wall cavities of up to 450 mm.

Orientation

Vertical.
Horizontal.

Fixing

Not required.
FB bracket.

Guidance for specification option:

Small brackets: up to 250 mm cavities.

Medium brackets: for 251–450 mm cavities.

FB-C stainless steel screws.
FB-S stainless steel screws.

Accessories

Not required.
Polyethylene DPC and interface sealing membrane.

Sustainability data

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Material

Mineral wool

Recyclability

Yes.

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

20 %

Guidance for specification option:

26% maximum.

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