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Structural Insulated Aesthetic
Spec-Thermal® is masonry block that does it all.
Spec-Thermal® Your Best Option
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Pre-insulated Single Wythe Masonry Walls
Simple Design and Construction.
New More Efficient Unit Designs.
Savings of up to 25% over clay brick veneer alternatives.
Higher performance for less cost.
More Than Just a Block
Pre-insulated Single Wythe Masonry Walls
Spec-Thermal® is an integrated pre-insulated masonry wall system offering two configurations: the two-web HI-R® system and the single-web HI-R-H™ system, each available in standard and half-high units.
Two-web pre-insulated masonry unit suitable for partially or fully grouted walls.
- Perfect for partially grouted walls
- Economical construction
- Suitable for most climate zones
Two-web pre-insulated masonry unit with a 4-inch by 16-inch face dimension for brick-scale coursing and coordinated wall layout.
- Perfect for partially grouted walls
- Adds scale and appearance of clay brick
- Available in blended colors
Single-web pre-insulated masonry units suitable for fully grouted walls.
- Flexible insulation options from 3" to 4" thickness
- Best thermal performance
- Suitable for all climate zones
Single-web pre-insulated masonry unit with a 4-inch by 16-inch face dimension for brick-scale coursing and coordinated fully grouted wall design
- Available with 4" insulation
- Best thermal performance
- Adds aesthetics of brick
- Available in blended colors
Two-web pre-insulated masonry unit suitable for partially or fully grouted walls.
- Perfect for partially grouted walls
- Economical construction
- Suitable for most climate zones
Two-web pre-insulated masonry unit with a 4-inch by 16-inch face dimension for brick-scale coursing and coordinated wall layout.
- Perfect for partially grouted walls
- Adds scale and appearance of clay brick
- Available in blended colors
Single-web pre-insulated masonry units suitable for fully grouted walls.
- Flexible insulation options from 3" to 4" thickness
- Best thermal performance
- Suitable for all climate zones
Single-web pre-insulated masonry unit with a 4-inch by 16-inch face dimension for brick-scale coursing and coordinated fully grouted wall design
- Available with 4" insulation
- Best thermal performance
- Adds aesthetics of brick
- Available in blended colors


Economical construction
Suitable for most climate zones
Adds scale and appearance of clay brick
Available in blended colors
Best thermal performance
Suitable for all climate zones.
Best thermal performance
Adds aesthetics of brick
Available in blended colors
Getting Started
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