Summary
Coursing block units manufactured to standard brick height and block length.
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Application
Suitable for applications including:
- Cavity internal and external wall leaves.
- Solid external walls.
- Separating walls.
- Internal partitions.
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Description
Thermalite Hi-Strength 7 provides a solution for seamless wall construction, designed to match the coordinating heights of standard masonry units and enhance structural integrity, ensuring uniform thermal performance throughout the wall.
Manufactured in accordance with BS EN 771-4, it complies with all relevant Masonry Wall Robust Details and supports compliance with Building Regulations – Approved Documents Part A, B, E & L.
Features and benefits:
- Versatile for accommodating openings, level adjustments, and complex wall geometry.
- Low air permeability.
- Produced in standard brick height and block length.
- Suitable for different applications.
- High-strength coursing block with a compressive strength of 7.3 N/mm².
- BBA-certified.
- BES 6001-certified.
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Color
Grey
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Finish
Micro-textured
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Material
Autoclaved aerated concrete (AAC)
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Shape
Rectangle
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Length
440 mm
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Width
100 mm, 140 mm
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Height
65 mm, 140 mm
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Specification
Classification data
Standard
To BS EN 771-4.
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Environmental performance requirements
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Environmental rating
BES 6001-certified.
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Configuration
Group 1.
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Mean compressive strength (minimum)
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Category
II.
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Freeze-thaw resistance
Not to be left exposed.
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Thermal conductivity (maximum)
0.18 W/mK.
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Work sizes (length x width x height)
440 x 100 x 65 mm.
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Accessories or special shapes
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Type
Coursing blocks.
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Tolerance category
GPLM.
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Density
730 kg/m³.
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Reaction to fire
Class A1 to BS EN 13501-1.
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Moisture movement
0.5 mm/m.
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Shear bond strength
0.15 N/mm².
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Water vapour permeability
5/10.
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Additional properties
Unit weight
2.7 kg.
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Mean compressive strength (minimum)
7.3 N/mm².
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Thermal Conductivity:
λ10, dry unit, S2, 0.16 W/m·K.
Protected (3%): 0.18 W/m·K.
Exposed (5%): 0.20 W/m·K.
Below DPC level: 0.29 W/m·K.
Protected (3%): 0.18 W/m·K.
Exposed (5%): 0.20 W/m·K.
Below DPC level: 0.29 W/m·K.
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Thermal resistance
Protected (3%): 0.555 m²K/W.
Exposed (5%): 0.5 m²K/W.
Exposed (5%): 0.5 m²K/W.
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Sound reduction
42.3 Rw dB.
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Vapour resistivity
50 MN·s/g·m.
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Third-party certification
BBA certificate 00/3720 Product Sheet 1.
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Sustainability data
Country of product manufacture
United Kingdom
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Material
Autoclaved aerated concrete (AAC)
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Recyclability
Yes
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Recycled content
80 %
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