Unverified88% confidenceDecision RuleTime unknown
遮光率标称高低不等于全黑，全遮光效果还取决于窗帘四周是否漏光——需窗帘宽度为窗户2倍做褶皱、两侧超出窗框15cm以上、顶部加遮光盒或帘头挡住上方缝隙
1
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88%
Confidence
Long-term
Relevance
-
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Unverified遮光要彻底必须解决四周漏光：窗帘宽度做窗户1.5-2倍并两侧超出墙面各15-20cm，顶部用罗马杆无缝或加装帘头盒挡顶光，否则布再黑边缘仍漏光92% similarUnverified遮光效果的关键是四周漏光控制而非布本身：窗帘宽度需为窗框宽的2倍（打褶）、高度覆盖窗框上下各15cm以上、两侧超出窗框10cm，否则边缘漏光会破坏全遮光91% similarUnverified窗帘遮光要靠边缘密封而非布料本身，四周漏光会大幅降低实际遮光效果；追求全黑应选罗马杆两侧超出窗框15cm以上、底部拖地或过窗台20cm，或加装遮光盒/侧封条90% similarUnverified遮光率与漏光是两回事：即使布料100%遮光，帘布与墙面间隙、罗马杆顶部、两侧边缘仍会漏光，全黑环境需搭配封闭式窗帘盒或L型侧挡+超出窗框15cm以上89% similarUnverified全黑房方案：99%遮光布做主帘 + 顶部安装遮光帘盒或轨道贴天花板 + 两侧比窗户各宽出15-20cm并回墙 + 底部拖地或加遮光贴条，四周漏光是破坏遮光的主因，仅换高遮光布无法达到全黑89% similar
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