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FlameBlok
Application

For openings in cavity walls.

Description

One-hour fire-rated, fully insulated cavity closer system. Creates a continuous ring of fire protection around openings in cavity walls, combing cavity closer and cavity fire barrier in one product. They feature foil-encased fire insulation that reflects flames and heat and prevents moisture penetration.

Features and benefits:

  • Superior thermal performance to other traditional methods of closing cavities, such as battens in timber frame or returned brickwork.
  • Provides a thermal break which stops cold bridging.
  • Complies with current Accredited Construction Details (ACDs) and E&W Approved Documents B and L.
  • Tested to BS EN 1363 as demanded by building regulations.

Application:

For openings in cavity walls.

General information

Features

Provides a damp proof course around the opening, provides a thermal break, simplifies brickwork. Zerto Global Warming Potential (GWP) and Ozone Depleting Potential (ODP)

Finish

Foil wrapped

Material

Recycled extruded PVC-U with Knauf Ecose mineral wool insulation core

Size

3600–4800 mm in length

Uniclass 2015

Pr_35_90_50_64 Plastics cavity closersPrimary

CAWS

F30/18 Cavity closers

F30/180 Cavity closers

Specification data - Plastics cavity closers

Product Reference

FlameBlok

Third-party certification

Chiltern International Fire Certificate

Accessories

BBMOU

BigBlok corner.

BBTIE

Brick ties.

BOOT14

Brace boot.

CAVBRBOX

Bracing bar.

CAVBOOT

Brace boot.

FLBFIL

Fire corner fillet, length: 1200 mm.

To fit cavity width

50 mm

4800 mm long.

75 mm

3600 mm long.

100 mm

4800 mm long.

125 mm

4800 mm long.

150 mm

4800 mm long.

FireRating

60 minute integrity and insulation in masonry construction, 60 minute integrity and 45 minute insulation in frame construction, check reveal and flush reveal tested

R-Value (minimum)

0.77 m²k/W

Standard product features

Colour:

White.

Features:

Provides a damp proof course around the opening, provides a thermal break, simplifies brickwork. Zerto Global Warming Potential (GWP) and Ozone Depleting Potential (ODP).

Finish:

Foil wrapped.

Material:

Recycled extruded PVC-U with Knauf Ecose mineral wool insulation core.

Size:

3600–4800 mm in length.

Recycled content:

PVC-U 100% recycled, insulation 60% recycled.

Recyclability:

PVC-U element recyclable.

Country of origin:

UK.

Environmental information

Recyclability

PVC-U element recyclable

Recycled content

PVC-U 100% recycled, insulation 60% recycled

Literature
Third party certifications
  • Chiltern International Fire Certificate: IF09035 and IF09037
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