The chimney on the roof of a house, bath or outbuilding in the country must be reliably insulated. Otherwise, debris and water will get into it. Both are equally bad and can lead to sad consequences. Traditional sand-cement mortar is not suitable for chimney insulation, as it will crack. To solve the problem, it is necessary to make a solution with high temperature stability.
What you need: cement, water, asbestos sheet
So, as already noted, the sand-cement composition is not suitable for isolating the chimney and eliminating the gap between the pipe and the roof. Experienced owners will say that there are a huge number of ways to eliminate the gap. This is true, however, almost all of them are associated with quite large financial costs. In any case, when it comes to creating isolation "for centuries." The issue can be resolved in a budgetary way. To do this, we will have to prepare a heat-resistant composition.
The first step is to prepare the asbestos sheet. It crumbles into the smallest pieces possible. The condition and thickness of asbestos does not play a special role. It is quite possible to use material that has already been used. The size of the harvested fragments should correspond approximately to the nail of an adult. The volume of asbestos flaps should be equal to half the volume of the prepared insulation solution.
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Cement is added to asbestos in a 1 to 1 ratio. Both components must be dry. The raw materials are thoroughly mixed, after which a small amount of water is added to it. Next, with the help of stirring, a thick mixture is prepared, the consistency of which should resemble a sealant. The resulting composition is left alone for 5-10 minutes.
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Stir again before applying the compound to the pipe. Thanks to the cement, the asbestos fragments will not fall down. The first step is to apply insulation around the pipe. It is not necessary to spare the solution - the more is used, the lower the likelihood that a crack will go through the insulation in the future. Do not forget that a certain slope should be formed so that rain and melt water does not accumulate around the pipe.
Continuing the topic, read about
how to effectively dry the cellar and rid it of dampness.
A source: https://novate.ru/blogs/300520/54716/