Unverified83% confidenceSolutionTime unknown
叠装（在原窗内侧加装一层）比整窗更换隔音效果更好，因两层窗中间形成较大空气层（100mm以上）对低频衰减显著，实测可比单纯换窗多降5-10dB，适合原窗尚可但噪音严重的场景
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83%
Confidence
Long-term
Relevance
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Unverified隔音效果有限，如果主要诉求是降低窗外噪音，需要搭配密封窗或选择多层加厚窗帘方案82% similarUnverified推拉窗因搭接结构存在缝隙，隔音天生弱于平开窗，实测同配置下推拉窗隔音约低5-8分贝；临主干道需隔音时应选5+12A+5或以上中空玻璃并加装毛条+胶条双密封，隔音要求高（≥35dB）应直接放弃普通推拉窗82% similarUnverified窗帘的隔音主要靠克重和褶皱空气层，克重≥250g/㎡且褶皱倍数（褶皱比）达到2.0以上才有明显吸音效果；单纯遮光布对高频噪音只有3-8分贝衰减，临街隔音应优先换双层玻璃而非依赖窗帘81% similarUnverified窗帘隔音主要靠克重与褶皱空气层，克重≥350g/㎡且褶皱倍数(布料宽/窗宽)≥2.0才有明显降噪，实测仅降3-8分贝，无法替代隔音窗81% similarUnverified窗户是隔音最薄弱环节，普通单层玻璃隔声量仅约25dB。临街噪音大应优先换中空/夹胶双层玻璃（可达35-40dB），装再多墙面隔音棉都不如换窗有效80% similar
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