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Metal roof trusses, just like wood trusses, have their advantages and disadvantages. Some builders prefer to the metal roof truss because the building of a structure is all about precision and metal has a more precise measurement than wood. Safety is also an issue when deciding to use a metal roof truss or a wood truss system, building codes and other procedures may require certain trusses.
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The metal roof truss has its advantages and disadvantages and will also greatly depend on the needs of the builder and if residential, the preferences of the homeowners.
- Even though they are considered to be more expensive, metal roof trusses can span further than wood.
- Metal roof trusses can be manufactured to exact standards.
- They are much more lightweight and this allows for larger shipments. This reduces the time it takes to get to the project site.
- Metal roof trusses are fire resistant.
- They are compatible with almost all types of roofing systems.
- No insect infestations can occur.
- Chemical treatments are not necessary to maintain the trusses.
- Metal roof trusses are recyclable and therefore environmentally friendly.
Disadvantages of Metal Roof Truss Structures
The disadvantages of metal roof trusses are as follows:
- Skilled labor is required to install metal roof trusses.
- They are not energy efficient since they allow more heat to escape from the structure.
- Metal roof trusses allow sound to be more easily transmitted.
- Temperature fluctuations allow them to move more.
- When the metal is cut, drilled, scratched or welded, rust can become a problem.
- The workers have a higher risk of electrocution when installing the metal roof trusses.
- Wires that are on the trusses can rub over time creating a hazard to anyone who happens to touch the metal truss.
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