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1, the new cement mortar walls winter maintenance around, summer maintenance three weeks.
2, flatness poor walls, it can be one-component or two-cracking putty wall putty for leveling, sanding smooth and maintain more than three days.
3, if the wall chalking occurs, you can use water cannons to remove the layer of powder, construction of a permeable high adhesion primer sealer or oil-based exterior wall paint and construction.
4, if the old walls have peeling, hollowing phenomenon, the need to eradicate the relevant parts, a one-component blade coating the external walls of plaster or putty for leveling two-component cracking putty, polished smooth and maintenance of more than three days.

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