Build Daily

Building Materials

August 12, 2017 18:08

Furnace sealant to eliminate unscheduled heat leak

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The inconvenient depressurization fireplace or stove?

During operation of stoves and fireplaces with a certain periodicity defects occur in the form of cracks and leaks in the clutch of these heated and cooking systems.The presence of such defects affect the performance, fuel consumption, occurrence of blackening of soot not only on the surface of the furnace or fireplace, but the room they are installed.

Additional smokiness, deterioration of joints and the risk of fire are also consequences decompression critical joints and furnace construction sites.As a general rule, in order to more easily detect the defects described, the furnace is covered with whitewash.Materials

combined under this title are usually designed to operate at high temperatures (up to a thousand degrees Celsius), have higher fire resistance and are useful for sealing joints in locations exposed to high temperature gases and combustion products.Their exterior and interior applications in heating systems ensures complete sealing of treated sites, providing the termination of unwanted leaks.

characteristics and behavior of oven sealants

Most sealants silicate contains special components and reinforcing glass fibers.Solidifying such sealants constitute a durable seal, designed for long life, reliable occupancy.Typically, the sealant is important for furnaces operating temperature (its operation) and the temperature at which it can be used during the performance of repair work.

vast majority furnace sealants should be applied at positive temperatures.Most manufacturers indicate the need to comply with a minimum temperature of zero degrees Celsius.Of course, also the temperature of the processed joints must not be lower than shown on the packaging of a particular species.

In addition, these compounds, like other sealants have time curing or polymerization period.As a rule, these values ​​correspond to the fresh compositions, not delinquent in storage.

With increasing shelf life of this time increases - hardening rate drops.And this time may be from several minutes to a day or more.Of course, this option also affects the amount of applied composition and its type (neutral, acidic).

Features of use of stove sealant

There are certain requirements and the rules of work, to use a high-quality sealant for furnaces.All the places that are supposed to structure the application, must be thoroughly cleaned and degreased.For metal surfaces use products containing acetone or alcohol.Sealants are used after removing the layers of scale or rust to bare metal.That the surface is degreased.

for masonry surfaces necessarily removing soot to clean the surface and processing it for degreasing solution (copper sulfate, etc.), after treatment with at least half being drying surfaces.Packaging for the majority of modern sealants are tubes for use fastening tool is needed.With it, a higher accuracy and less expenditure of sealant.

Since different types of sealants form seams with different time of hardening, can be recommended to follow the manufacturer's instructions.In general, after applying and curing the composition should start to carry out a gradual warming of the stove or fireplace, controlling the solidification process of the polymer.The temperature increase is carried out gradually and held for several hours, until the acquisition of the composition of the specified color (for example, very often black) ends.

further finishing can be carried out only after complete curing of the sealant.The compositions may become a glass-like and non-staining or retain sufficient elasticity for the entire period of operation claimed.By the way described high-temperature sealants can be used as a sealant for the chimney.They can carry out its plaster seams and joints to the point where they exit it heated gases.

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