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What are the fire resistance differences between treated wood and metal frames?
When it comes to construction materials, fire resistance is a critical factor for safety and compliance. Treated wood and metal frames are two common choices, but their fire resistance properties differ significantly.
Treated wood is infused with fire-retardant chemicals to slow combustion. While it can resist ignition longer than untreated wood, it eventually burns when exposed to sustained high temperatures. The treatment delays flame spread but doesn’t make the wood fireproof.
Metal frames, particularly steel, are inherently non-combustible. They don’t ignite or contribute to fire spread. However, under extreme heat, steel can weaken and lose structural integrity, though this typically occurs at much higher temperatures than wood’s ignition point.
In summary, metal frames generally offer superior fire resistance compared to treated wood, but both materials have limitations. The choice depends on building codes, design requirements, and fire safety goals. Proper insulation and fireproofing can further enhance their performance in fire-prone environments.
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