关于天窗通风，景色和轻型天窗有多种形式，从廉价的塑料圆顶到可操作的屋顶窗口，可将屋顶窗口翻一番。即使是最基本的天窗也承认日光进入内部空间，否则必须电气地照亮。Skylights开放和关闭的额外优势是从上层故事的房间排出闷热的空气。根据他们的位置如何，天窗也可以提供很大的户外景观。塑料和各种玻璃都用于天窗玻璃。塑料，通常是丙烯酸或聚碳酸酯，成本低于玻璃，但它不像划痕一样耐耐药，并且在长时间暴露于阳光下，它可能变得脆弱和变色。聚碳酸酯具有更高的抗冲击性，比丙烯酸更昂贵。塑料天窗由各种形状 - 圆顶，矩形，圆圈，椭圆形和三角形制造 - 这将难以用玻璃复制。更昂贵的天窗是用玻璃制成的，制造商现在提供了巨大的玻璃窗。这对于为特定屋顶位置或特定的气候区选择天窗。 Skylights are manufactured by many companies, although there are only a few national players. The residential market for off-the-shelf skylights is dominated by Velux, a Danish company. Maine-based Wasco claims a distant second place. Other manufacturers, such as Tam, Columbia,and Sun-Tek, are stronger regional forces. Fakro, is a major European manufacturer but it hasn’t made serious inroads in the U.S. to date. Three major window manufacturers ( Andersen, Marvin and Pella) have dropped out of the skylight business in recent years as the industry consolidated. In addition to mass-marketed residential skylights, there’s also a booming trade in high-end custom skylights for residential as well as commercial buildings. Wasco considers itself the leader in that field. Matching…