Unverified90% confidenceSolutionTime unknown

现砌瓷砖壁龛开洞后须先做防水（丙纶/JS涂料上翻至龛顶），再贴砖，最后所有内阴角打中性硅酮防霉胶；防水层缺失会导致墙内长期渗水霉变

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