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Summary
Aircrete blocks with a closed micro-cellular structure.
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Application
Suitable for internal and external cavity walls, both below and above the damp-proof course (DPC), separating walls, partitions, and rendering.
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Description
Our Thermalite Hi-Strength 7 range is engineered for higher-load environments, including dwellings above 2.5 storeys and room-in-roof construction, where increased structural capacity is required.
Delivering a compressive strength of 7.3 N/mm², this robust block provides reliable structural support when strength and durability are non-negotiable.
Manufactured in accordance with BS EN 771-4, complies with all relevant Masonry Wall Robust Details, and aids in compliance of Building Regulations – Approved Documents Part A, B, E & L.
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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, 150 mm, 190 mm, 200 mm, 215 mm
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Height
215 mm
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Specification
Classification data
Description
Aircrete blocks.
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Standard
To BS EN 771-4.
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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)
0.16 W/mK.
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Work sizes (length x width x height)
440 x 100 x 215 mm.
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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
9.1 kg.
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Typical compressive strength
7.3 N/mm².
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Vapour resistivity
50 MN.s/g.m.
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Third party accreditation
BBA certificate.
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Sustainability data
Country of product manufacture
United Kingdom
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Manufacturing plant location
Roman Way, Northampton NN4 5EA, UK
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Material
Autoclaved aerated concrete (AAC)
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