Marley's Roof Defence intumescent roof fire barrier is installed under tiles and between roofing battens to help prevent the spread of fire and smoke between adjoining properties.

It provides full fire protection from one roof space to the next, achieving up to a 60-minute fire rating. It is used to retard the spread of fire and smoke in semi-detached and terraced properties, flats, schools, hospitals, and care homes with no maintenance required after installation.

Features

  • Helps prevent fire and smoke spreading between adjoining properties

  • Provides fire resistance performance up to 60 minutes

  • Used to protect multi-home compartments and shared roof space buildings

  • Quick, easy and simple to install

  • Market-leading fire performance

  • 15-year warranty for extra peace of mind

Fire resistance

In the event of a fire, Roof Defence intumescent material will expand to close the gap between the top of the wall / spandrel panel and the roof / ridge tiles, whilst also separating the roof batten and ridge tile timbers, providing effective fire resistance for 60 minutes, depending upon the non-combustibility of the roof covering (tiles) and the construction of the compartment / party wall.

Technical data

Manufactured from low smoke, zero halogen, highly intumescent flexible material.

Material properties

  • Colour: red

  • Finish: PE

  • Overall nominal thickness: 10mm

  • Length: 6.3m

  • Width: 100mm

  • Nominal weight: 2.8kg

  • Sleeve material: PE

  • Storage: dry

  • Transportation storage temperature: 0-30°C

  • Cuttability: cut to length using scissors or knife

  • Compressability: do not compress

  • Working life: >60 years

Construction type

  • Substrate / base material: spandrel panel or masonry

  • Maximum air gap: 96mm

Physical properties

  • Density: 615kg/m3

  • Fungal resistance: protected by polythene sleeve

  • Halogen: low

  • Density: 630kg/m3

  • Free expansion: 30:1 ratio

  • Activation temperature: 180-200°C

  • Reaction to fire classification: E

  • Resistance to fire: BS EN 1363-1 2012 | ASFP TGD 19

Design and technical support

Dedicated technical team available.