89-Soffit_board_Intumescent_ventilators

Soffit Board Intumescent Ventilators

Metal ventilation grilles to prevent flame penetration in soffits, ideal for loft conversions. (PRODUCT 89)

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  • Description
  • APPLICATION INSTRUCTIONS
  • DOWNLOADS
  • ORDER REFERENCES

Product Description

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Envirograf® soffit board ventilators are made in many shapes and sizes. The vents fit into existing vent openings and seal up in a fire, stopping flames and hot gases reaching any loft area. An important precaution in case of fire in the lower rooms of a building, where the windows have blown out or been left open. Otherwise flames could burn through plastic soffit vents and catch the felt alight — spreading fire to loft rooms being used as bedrooms or playrooms. Essential for loft conversions.

 

ADVANTAGES

  • Circular or rectangular grilles containing intumescent material that seals the vent openings in the event of a fire
  • Designed to protect roof space from flames and hot gases that may enter from broken or open windows below
  • Ideal for loft conversions, particularly for use over high-risk rooms such as kitchens

 

FIRE TEST PERFORMANCE

Tested to BS476 Part 22 (1987), achieving an integrity of 66 minutes.

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APPLICATION INSTRUCTIONS

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Rectangular grille – push recess into opening in soffit board and secure in place. Available 72mm x 215mm overall to suit 47mm x 215mm opening. (Other sizes can be made to suit – prices on request)

Circular grille – push recess into opening in soffit board. Available 82mm diameter overall to suit 68mm hole diameter (Other sizes can be made to suit – prices on request).

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DOWNLOADS

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Please use the links below to download relevant information as PDF documents:

 

Technical Information

TD089-02-2015

 

Application Instructions

AP089-02-2015

 

COSHH Data

HS089-05-2013

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ORDER REFERENCES

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CIRCULAR GRILLE

REF ETERNAL DIAMETER OPENING DIAMETER
ES/SV/CIRC
(White)
82mm 68mm

 

RECTANGULAR GRILLES

REF EXTERNAL DIMENSIONS OPENING DIMENSIONS
ES/SV/RECT 72mm x 215mm 47mm x 215mm
ES/SV/RECL 70mm x 590mm 50mm x 540mm
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