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Home > Structure > Concrete > Precast Concrete and GRC items, Supply > Precast concrete - general non-structural Firth Precast Fireplaces Firth has currently engaged in an environmental assessment of its products with Greenbuild. Work is in progress and results will be published shortly.Firth Precast Fireplaces are manufactured in a range of styles and sizes to complement any design or living environment. They are sold as a “kit-set” of precast elements.
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Firth Precast Fireplaces can be used indoors or outdoors to create an inspired focal point for entertaining and living. As well as for open fires, Firth Precast Fireplaces are used to house enclosed log burners. They are popular with architects and builders because of their ease of construction and aesthetic appeal.
Firth Precast Fireplaces are an efficient way to create a fireplace that is not only attractive but which “draws” properly, providing warmth and removing smoke. A fireplace that works correctly draws air into the fire chamber through the fuel bed to supply oxygen to the burning process, combustion gases and smoke rise from the burning fuel to the throat of the fireplace and then up out through the flue. A correct balance between the fire chamber, throat, flue cross sectional area and flue length are essential for a continuous upwards discharge draft of gases and smoke.
All Firth Precast Fireplaces are made from pumice concrete; an inert material comprising aggregates, sand, cement, additives and water. Aggregates and sand are sourced close to manufacturing locations. Cement is New Zealand made. No toxic preservatives are required for preventing rot. Firth is committed to sustainability in concrete manufacture and distribution, including the recycling of surplus raw materials, water and leftover concrete. Fireplaces comprise a variety of components including a base section, a gathering, flue blocks and a flue cap.
Acceptable solution B1/AS3 details how the Firth Precast Fireplaces should be joined by reinforcing and secured to the building for small chimneys of specified height restrictions. Designs outside these limitations will require specific engineering input.
The fireplace must be placed on a suitable foundation that includes starters for reinforcement. The Firth “kit-set” of precast elements is easily assembled on site with reinforcing steel and mortar. The fire chamber itself must be lined with firebricks laid using refractory mortar. The exterior can be completed with a plaster finish or brick veneer.
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