Unverified88% confidenceDecision RuleTime unknown
卫生间墙砖优先选吸水率≤0.5%的瓷质砖或吸水率3-6%的釉面砖，地砖必须选吸水率≤0.5%的全瓷砖以防返潮返碱
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88%
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Long-term
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Unverified吸水率≤0.5%的瓷质砖（全瓷）适合卫生间地面，吸水率3%-10%的陶质砖只能上墙，反用会导致返潮渗水开裂94% similarUnverified卫浴瓷砖选购标准路径：先按吸水率定砖体等级（湿区全瓷）→按区域定防滑（地面R10+/墙面无要求）→按面积定规格→最后定纹理色彩；铺贴前需确认平整度并预留至少1.5-2mm缝隙防热胀冷缩79% similarUnverified淋浴湿区背景板吸水率必须≤0.5%（如岩板、瓷砖类），普通密度板/PVC覆膜板吸水率高，长期潮湿会分层鼓包，只适合干区台盆背景78% similarUnverified淋浴区壁龛底板必须做≥3%的向外泄水坡度，防止积水；成品壁龛应确认自带找坡底板，否则需现场砂浆找坡74% similarUnverified卫生间/淋浴区墙地面防潮应选JS聚合物水泥基防水涂料（II型），涂膜厚度≥1.5mm、分2-3遍施工，单遍过厚易开裂；干区可放宽到1.0mm74% similar
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