Flue lining issues
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Excuse me: Sandblasting and rust removal are required during lining construction. Usually, during construction, the lining is first lined with the upward side, and at the same time, the flue is turned over to continue lining. During the construction process, the evaporation of water from the lining caused floating rust to appear again on the inner wall. Is it necessary to re-sandblast? What will be the consequences if it is directly lined?
It needs to be re-sandblasted. If the area is not large, it can be directly polished with a grinding wheel. If not treated, the rusted area will peel off early.
The lining construction must be sand blasted and rust removed. If it is directly lined, there will be a gap between the base material and the lining.