To eliminate the risk of fire, the pipe in the bathhouse must be insulated, excluding its contact with the wooden roof structures. Typically, such insulation is carried out using mineral wool, on top of which the pipe is plastered and wrapped with an additional layer of roofing steel.
Insulation of the pipe in the bath performs several important tasks. Due to the insulation, the wooden frame and the roof are protected from overheating and fire. In addition, proper insulation of the pipe allows you to seal the roof and prevent water from entering the attic.
What requirements should meet the pipe in the bath
According to fire safety requirements, the temperature of the outer surface of the pipe in places of contact with the roof elements should not exceed 50 degrees. If the pipe is brick, this requirement is met by itself. But if the pipe is metal, it is necessary to isolate it. There are several methods of pipe insulation, most of which are based on the principle of layering and the use of heat-insulating materials (most often mineral wool).
Duct insulation
To avoid contact with the tree, the chimney in the bath should be located in a special box at a distance of 15-20 centimeters from its walls. The space between the chimney and the walls of the duct is filled with fireproof heat-insulating materials based on mineral wool, broken brick or ordinary dried earth.
Sandwich chimneys
Recently, sandwich chimneys have become increasingly popular. In them, the inner surface is made of high-strength steel. Outside, another steel pipe is put on a steel pipe, with a larger diameter. All the free space between the pipes is filled with mineral wool with a density of about 120 kilograms per square meter. At the same time, mineral wool must withstand a working temperature of up to 700 degrees.
Modular chimneys
Modular chimneys in their design resemble a sandwich chimney. In them, the inner pipe is ceramic, and the outer casing is made of lightweight concrete. Installation of pipes from such modules is not difficult. The blocks are attached to each other using a solution, then waterproofing is carried out at the place where the pipe passes through the roof.
