Low Slope Retrofit Roofing Systems
beplay苹果版手机免费下载beplay在线下载Mcleroy金属改造屋顶系统提供长期寿命和降低的生命周期成本。在许多情况下，与改装金属屋顶系统相比，传统屋顶撕开和更换之间的成本差是投资回报，可以在短短几年内收回。作为添加的加号，McleRoy金属改beplay苹果版手机免费下载beplay在线下载造屋顶系统提供了遏制吸引力，这根本不能通过扁平屋顶实现。
通过设计，具有传统膜屋顶的平顶有一个有问题的条件。例如，它们无法脱落的雨水促进耐候膜及其基材的过早失效。
它们也受到紫外降解，热膨胀/收缩，涂层水和渗透冬季冻结的渗透的恶劣条件，夏季冻结冻结。
结果是恒定维护，意外的补丁
The most common framing assembly for a metal roof retrofit is the Post and Purlin system. As shown in the following illustrations, the system can be employed for installation over existing roofs with steel or wood framing as well as structural concrete systems.
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The metal roof retrofit system is installed over steel bar joists that are spanning parallel to the new roof slope. |
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适应钢铁 POST和PURLIN系统增加了一个连续的基地ZEE，这使得它能够安装在垂直于新屋顶斜率的钢筋托梁上。 |
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Adaptation to Wood 对于具有木材框架屋顶的现有建筑物，柱子和PURLIN系统使用垂直于现有木托梁安装的连续基地Zee。无论托梁的跨度方向如何，这些类型的屋顶都需要基地Zee。 |
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Adaptation to Concrete For structural concrete roofs on existing buildings, the Post and Purlin system uses base shoes and posts that are installed centered over the existing concrete beams. When the beams span perpendicular to the new roof slope, a base shoe is still used, dependent on the spacing of the beams in relation to the retrofit purlin's span capacity. Otherwise, a continuous base zee would be included in the system. |
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Similar in concept to the Post and Purlin system, McElroy's Wide-Span framing system offers a unique method for specific applications where the existing roof's primary support systems are parallel to the new roof slope. In this illustration, a continuous base zee is placed directly over the existing primary framing (beam or load-bearing walls). Adding a continuous zee rafter supported by posts that are installed directly over each existing joist, will enable the new zee purlins to be placed as needed to satisfy design wind and snow loads. This system can easily be designed for purlin spans up to 30'-0" using 6" to 10" deep zee purlins. |
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无论您是建造新的家庭还是规划装修，金属屋顶都可以提供长期成本节约和舒适。探索您的选择并找到满足您审美和预算需求的产品，contact a McElroy Metal distributor or contractor在你今天的地区。我们迫不及待地想帮助让你的梦想成为现实。
