Where glulam beams will be exposed to weather, request a preservative-treated product or consider wood that has a natural resistance to decay, such as Alaska yellow cedar or Port Orford cedar.

• 凡集成胶合木梁材将要暴露在室外天气下，要求产品用防腐剂进行处理，或考虑运用具有天然抗腐烂的木材，如阿拉斯加黄杉木或港口奥福德杉树。