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When comparing the cost of MGO (Magnesium Oxide) board to other common building materials, it’s important to consider not just the initial purchase price but also the long-term value and total project cost.

Here is a breakdown of how MGO boards compare to other materials:

MGO Board vs. Drywall (Gypsum Board)

• Initial Cost: MGO boards typically have a higher upfront cost per sheet than standard drywall. Drywall is one of the most affordable building materials on the market, largely due to its simple composition and widespread availability.
• Long-Term Value: This is where MGO boards offer significant value.
  • Durability: MGO is much stronger and more impact-resistant than drywall, reducing the need for costly repairs and replacements over time.
  • Fire Resistance: Its non-combustible nature (often A1 rated) can lead to lower insurance premiums and a safer building.
  • Moisture & Mold Resistance: MGO boards don’t rot or support mold growth, eliminating the high cost of mold remediation and water damage repairs.
  • Installation: While the board itself may be more expensive, its smooth surface and ease of cutting with standard tools can sometimes lead to reduced labor costs and faster project completion.

Conclusion: For a standard interior wall where fire and moisture resistance are not critical, drywall is the more cost-effective choice. However, for applications in high-moisture areas (e.g., bathrooms, basements), fire-rated walls, or commercial spaces with high traffic, the higher initial cost of MGO is often justified by the long-term savings and enhanced safety.

MGO Board vs. Cement Board

• Initial Cost: The initial cost is often comparable, with MGO boards sometimes being slightly more expensive.
• Total Project Cost: MGO boards can provide a better overall value.
  • Weight: MGO boards are significantly lighter than cement boards. This makes them easier and faster to handle and install, which can lead to lower labor costs and a less strenuous work environment.
  • Cutting: MGO can be scored and snapped or cut with a standard circular saw, while cement boards are heavier and require specialized tools, which can increase labor time and tool costs.
  • Durability: MGO is more flexible and less brittle than cement board, reducing the risk of cracking during transport or installation.

Conclusion: While both are excellent for moisture-prone areas like tile backer board, MGO’s lighter weight and easier workability can make the overall project more cost-effective.

MGO Board vs. Plywood

• Initial Cost: MGO boards are generally more expensive than standard plywood.
• Total Project Cost: The cost comparison depends heavily on the application.
  • Fire Resistance: MGO is non-combustible, whereas plywood is highly flammable. For fire-rated applications, fire-retardant treated plywood can be used, but this is often more expensive than MGO and may have its own limitations.
  • Moisture Resistance: Plywood is highly susceptible to water damage, swelling, and rot, especially in humid conditions. MGO’s moisture resistance makes it a superior choice for any exterior sheathing or subflooring application where water is a concern.
  • Pest Resistance: MGO is completely inorganic and does not provide a food source for termites or other pests, which can be a long-term problem and expense with plywood.

Conclusion: For general use in dry, non-fire-critical applications, plywood is cheaper. However, for demanding uses like exterior sheathing, subflooring, or in areas with high pest risk, the long-term performance and durability of MGO boards make them the more economical and safer choice.

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