Limit glulam exposure to weather conditions prior to building enclosure by keeping beams and columns covered and protected as long as practical after installation. The effect of different detailing.
Hyne timber has a range of products suitable for external applications such as hyne timber beam 21 beam 17 lgl and t3 green.
Glulam exposed to weather. Whether you are the designer builder or owner of an above ground outdoor weather exposed structure following these simple do s and don ts will lead to the durability and successful performance of your timber. Treatment to hazard class3 h3 is recommended for all glulam beams exposed to the weather. At the end of the day it s simple stuff.
13 irg 2017 special session on durability of timber bridges pp. These beams are 24f 1 8e or combination 50 syp. Clear coat and colorless wood oil generally provide insufficient protection against uv rays and should not be used on glulam that is exposed to the outdoors that is hard to replace unless you are looking to achieve a weathered look.
Although glulam does not require preservative treatment for most uses certain applications may present environmental conditions conducive to decay insect or marine borer attack such as the long term or frequent presence of moisture gen erally 20 percent or greater moisture content of the wood accompanied by temperatures ranging from 50 to 90 f. Wood material science engineering. Along with this treatment an exterior adhesive such as resorcinol adhesive should be used.
Other uses include golf atv and snowmobile bridges crane mats and boardwalks. Always choose the best australian hardwood that is exceptionally resistant to weather moisture insect and marine borer attack and decay. Common glulam applications glulam has a reputation for being used in striking exposed applications such as vaulted ceilings and other designs with soaring open spaces.
For this reason you should look for a preservative treated glulam product like alaska yellow cedar. In homes churches public buildings and other light commercial structures glulam is often specified for its beauty as well as its strength. The finished beams must be suitably coated with either a penetrating sealer or film forming coating.
Remove wrapping after installation in the enclosed space so the moisture content of glulam members is allowed to stabilize naturally during construction. Treated glulam beams can be used in applications where the beam will be exposed to weather insects sunlight and high moisture conditions. Great for decks providing an unobstructed view.
Clear lacquer on the outside of glulam can eventually start to crack and flake off which complicates maintenance. Moisture conditions of rain exposed glue laminated timber members. When it comes to wood you should always plan for exposure.