在西欧，瓦片和板岩屋顶是用椽子、底层、反板条和板条建造的。一旦瓷砖或石板被固定，隔热材料，在大多数情况下是矿物纤维，被插入椽子之间，添加蒸汽和空气屏障，沥青用内衬完成。尽管结构简单，但仍然需要额外的技能。此外，湿热性能对较差的工艺非常敏感。本文介绍了一种新型坡屋顶的开发，它将蒸汽缓凝剂、隔热剂、空气缓凝剂和防风雨层组合成一种复合材料。这种复合材料直接固定在椽子上。性能要求包括足够的机械强度、高耐热性、良好的气密性、正确的湿度响应、最小的热桥接、可接受的隔音和可接受的耐火性。 本文讨论了设计过程，重点讨论了与热、湿和空气相关的方面。单元:SICitation:研讨会，ASHRAE交易，1998年，第104卷，第2部分，多伦多

Tiled and slated roofs in Western Europe are constructed using rafters, an underlay, counter-battens, and battens. Once the tiles or slates are fixed, thermal insulation, in most cases mineral fiber, is inserted between the rafters, a vapor and air barrier added, and the pitch finished with an internal lining. Although simple, construction nevertheless requires extra skill. Also, the hygrothermal performance is quite sensitive to poor workmanship.This paper describes development of a new pitched roof, with the vapor retarder, thermal insulation, air retarder, and weatherproofing layer combined into one composite. This composite is fixed directly on the rafters. Performance requirements are adequate mechanical strength, high thermal resistance, good airtightness, correct moisture response, minimum thermal bridging, acceptable acoustical insulation, and acceptable fire resistance. The paper discusses the design process, with emphasis on the heat-, moisture-, and air-related aspects.Units: SI