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Therm-A-Channel

 
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Therm-A-Channel is a specially compounded intumescent elastomeric material which is extruded into a 12mm x 15mm channel, forming a glazing gasket which cups the edge of the glass pane. Being elastomeric the gasket is impervious to water and atmospheric moisture. Therm-A-Channel has been designed and tested for use in the 30 minute glazing applications found in screens and fire doors using either wired or clear fire rated glass. It is approved for use with glass sized up to 700x800mm in FD30 and FD30S fire doors and screens. As with any fire-rated element it is essential that the construction used is of a type previously tested, and therefore the following specifications should be followed:

 

Note: All sizes in mm

All the above products, where relevant, are tested to British Standards 476: Parts 8, 20, 22 and 31.1

Fire doors

Glazing aperture in Particle board core doors to be lined with 6mm Hardwood. Beads - softwood, 13mm high x 21 mm wide. Fixings 12g steel pins 40mm long at 150mm centres.

Screens

Frame- softwood 90x45mm. Beads- softwood 13mm high x 21 mm wide. Fixings 12g steel pins, 40mm long at 150mm centres.

Installation

Therm-A-Channel is simply cut to length to the perimeter of the glass pane. The corners are mitred cutting the side wall only and leaving the base intact. It is then pushed onto the glass edge, no adhesives or sealants are required and finally, the aperture is glazed as detailed under performance.

Test Evidence

Therm-A-Channel is covered by test report IFCI 290, where a glazed panel 808 by 710mm in a flaxboard core doorleaf, retained by softwood beads attained 36 minutes integrity. Its use in softwood screens is covered by report DIG 9611131 where a softwood screen with central transom attained an integrity rating of 34 minutes.

Availability

Therm-A-Channel is available ex-stock in 100M coils.

 

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Last modified: October 04, 2001