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Heat Resistant Concrete Fireback

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PRE-CAST-FIREBACK

Heat Resistant Concrete Fireback is a refractory fireback designed for installation on the wall behind a fireplace. Available in 16" (400mm) and 18" (460mm) nominal sizes. Any open spaces left behind the fireback can be filled using Vitcas Vermiculite Insulating Cement to ensure a secure fit and optimal heat insulation.

Details

Vitcas Heat Resistant Concrete Fireback is a single-piece refractory fireback designed for traditional open fireplaces. Made from durable, heat-resistant material, it offers excellent wall protection and conforms to BS 1251: 1987 standards. Best used with throat forming lintels for improved efficiency and safety in open fireplaces.

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Size 16 inches nominal:

Front width: internal 15.5 inches (39.5cm), external 19 inches (48.5cm)
Overall height:22.25 inches (56.5cm)
Overall depth: 8.5 inches (21.6cm)

Size 18 inches nominal:

Front width: internal 17.5 inches (44.5cm), external 22 inches (56cm)
Overall height: 22.25 inches (56.5cm)
Overall depth: 8.5 inches (21.6cm)

Installation Instructions for Vitcas 16" / 18" Firebacks and Lintels

fireback fireplace

The fireback should be placed in position with the lintel so that the distance between the fireback and lintel at the throat is 110mm +- 10mm. This is important for the air flow into the chimney.
The position should allow for expansion and contraction of the fireback at high temperatures particularly at the back and sides.
Corrugated cardboard should be placed around the back of the fireback in order to create an expansion gap. Then the space behind should be filled with Vitcas Vermiculite Insulating Cement.
The space between the top of the fireback and the back of the chimney should be flaunched with Vitcas Heatproof Screed.
Any gap between the front of the fireback and the fire surround should be filled with a suitable lagging rope then covered with Vitcas Heat Resistant Sealant. This is important to avoid combustion gases escaping around the sides of the fire surround.
Firebacks should be stored undercover prior to installation and if they are taken from open storage the fire should not be used for 3 days after installation.
To prevent cracking it is important that the first firing should take the temperature up slowly. Initially a small fire should be lit of relatively short duration and only slowly built up to higher temperatures.

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