Fireplace fillers

Among the building materials for filling the fireplace masonry, there are two main types: steel and natural. Natural aggregates are primarily sand-based mortars. For masonry mixtures, it is better to use quarry sand, it has less sewage, and it is more finely dispersed.

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Gravel and crushed stone are usually used to fill the foundation. Gravel pebbles are usually of different diameters from oval to round in shape – which is not very good for adhesion to the masonry mixture. Still, it is better to use crushed stone; it has a rough, highly adhesive surface. For finishing fireplaces, natural stones are used (rubble and buldygi boulders). Rubble stone and buldygi have an irregular shape. The interior of the fireplace is usually laid out with small pebbles, larger ones are used for outdoor masonry.

Steel structures are used for additional “decor” details of the hearth. Steel “corner” is used to cover the “pole”. Fixing appliances in the fireplace are made of steel wire. Perfectly protects roofing iron from heat; cases for fireplace ists are made from it. Thermal insulation material – asbestos is a heat-resistant material with low thermal conductivity and durability. It is usually added to the clay solution for strength, otherwise it quickly collapses. The solution turns out to be very strong and undercooks the entry of excess air into the combustion chamber. Roofing material is used to improve the waterproofing of the fireplace foundation.

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