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Worldwide Shipping Sbi Micore 300 Mineral Fiber Board | Ac02565b Up To 45% Off [vNcjWtYu]

$30.99 $99.99 -69%

SBI MICORE 300 Mineral Fiber Board: A Robust Underlayment SolutionIntroducing the SBI MICORE 300 Mineral Fiber Board, a premium fireproof underlayment designed to provide reliable protection beneath your wood stove, pellet stove, or fireplace. This 4

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SBI MICORE 300 Mineral Fiber Board: A Robust Underlayment Solution

Introducing the SBI MICORE 300 Mineral Fiber Board, a premium fireproof underlayment designed to provide reliable protection beneath your wood stove, pellet stove, or fireplace. This 4-pack of 48" x 24" x 1/2" boards offers a high thermal resistance, ensuring compliance with NFPA standards for hearth pad builds. With its ideal insulating properties, MICORE 300 is the perfect choice for a durable and safe underlayment layer.

Key Product Properties and Specifications

Featuring an R-value of approximately 1.03 per 1/2" sheet, MICORE 300 effectively reduces heat transfer through combustible floors, meeting or exceeding many stove manufacturers' hearth insulation requirements. The board is designed for use as the bottom insulating layer in hearth pad assemblies and must be layered under cement board before installing tile or stone for structural integrity. Lightweight and easy to cut, shape, and install on-site, MICORE 300 is perfect for DIYers and contractors alike. Here are some of its key features:

  • High thermal resistance for NFPA-compliant hearth pad builds

  • Ideal insulating layer beneath hearth pads, tile, and stone

  • Sold as a 4-pack (32 sq. ft. total coverage)

  • Easy to cut, shape, and install on-site

  • Must be layered under cement board before tile or stone

Practical Applications and Benefits

Whether you're constructing a custom hearth pad, floor protector, or heat shield for freestanding appliances, MICORE 300 is the ideal choice. Its non-combustible, UL-listed mineral fiber board construction ensures maximum safety and reliability. With MICORE 300, you can enjoy peace of mind knowing that your home is well-protected against fire hazards. This product is suitable for both DIYers and professionals, making it a versatile option for any hearth or fireplace project.

What Our Customers Say

January 1, 2026

Absolutely no complaints!

This is a truly fantastic tool.

- Landen H..

January 1, 2026

Absolutely no complaints!

It's a great item. And so useful.

- Irene B..

January 1, 2026

Absolutely no complaints!

A really good quality, solid product.

- Jacqueline D..

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