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We are Part of the Thomas Armstrong Group

THOMAS ARMSTRONG

(CONCRETE BLOCKS)

LTD

GALLERY

DISCLAIMER

The block and texture images are intended for indicative purposes only and actual textures and shades may vary between manufacturing locations. Please contact your regional sales office for further information and sample blocks. We advise the construction of sample panels on site as masonry appearance cannot be appreciated from individual blocks.

Airtec Standard

3.6 N/mm² AERATED CONCRETE WALL BLOCKS

Airtec Standard are the perfect all-round residential aerated concrete blocks giving you a combination of medium strength and high thermal performance in one block.

These concrete wall blocks are unique in combining a thermal conductivity of only 0.11 W/mK, with a compressive strength of 3.6 N/mm² to allow flexible design for single and multi-storey construction.

All Airtec products are ISO 9001 Quality and ISO 14001 Environmentally certified and with the highest possible BES 6001 Responsible Sourcing rating of ‘Excellent’.

In common with all other Airtec blocks, they boast the very best possible dimensional tolerance category of 'Thin Layer Mortar B' (TLMB) but are perfectly suitable for conventional 10mm mortar joint construction. These Aerated Blocks are smooth faced but are not intended for fair-faced use due to the natural air bubbles on the block surface.

Our Airtec Concrete blocks are available in ‘Standard’ texture finish providing a plain-faced, smooth, cellular texture which is a suitable background for accepting renders and plasters.

In common with all aerated concrete in the UK, the surfaces of the building blocks may contain a random number of larger natural air bubbles/cells on the block surface due to an unavoidable consequence of the manufacturing process. These large cells are perfectly normal and are not a defect and do not detract from performance in any way. Although the blocks can be painted, we cannot guarantee that the surfaces will not contain some of these larger cells and we therefore do not recommend using Airtec for paint-grade or fair-faced applications.

APPLICATIONS

  • Inner & Outer leaf of cavity walls up to 2 storeys.
  • Inner and rendered / classed outer leaves of external cavity walls.
  • ‘Standard’ texture finish providing suitable background for accepting renders and plasters.
  • Acoustic separating walls to Part E of Building Regulations and Robust Details.
  • BRE Green Guide A+ rated walls.
  • External Cavity or Solid Walls.
  • Loadbearing and non-loadbearing walls.
  • Flanking walls to Party Walls.
  • Internal partition walls.
  • Foundation walls below damp-proof course (DPC).
  • Thin-Joint Construction.
  • Fire resistant walls.
  • Large Format Blocks available.
  • Solid Foundation Blocks available.

ADVANTAGES

  • ISO 9001 & ISO 14001 Certified
  • BES 6001 "EXCELLENT" Sustainability rating.
  • Manufactured to BS EN 771-4.
  • BBA Certified, Category 1 Manufactured.
  • Low Weight.
  • Exceptional thermal performance.
  • Cost-effective solution.
  • Safer handling
  • Easy to cut, drill and chase.
  • Accepts a range of aerated block light to heavy-duty fixings

DOCUMENTS

  •  

    PROPERTY

    REFERENCE

    VALUE

    Face Size (L x H)

    Available Widths

    Dimensional Tolerance

    Gross Dry Density

    Mean Compressive Strengths

    Manufacturing Category

    Thermal Conductivity (Protected Inner Leaf)

    Thermal Conductivity (Exposed Outer Leaf)

    Moisture Movement

    Fire Resistance

    Configuration

    Available Texture Finish

    BS EN 771-4

     

    BS EN 772-16

    BS EN 772-13

    BS EN 772-1

    BS EN 771-4

    BS EN 1745

    BS EN 1745

     

    BS EN 771-4

    BS EN 13501-1

    BS EN 1996-1-1

    620mm x 215mm

    100mm

    115mm

    125mm

    140mm

    190mm

    215mm

    TLMB (Thin Layer Mortar Category B)

    530 (±50) kg/m³

    3.6 N/mm²

    Category I

    0.11 W/mK

    0.13 W/mK

    0.40 mm/m

    Class 1 Reaction to Fire

    Solid - Group 1

    Standard

    BS EN 1745

    BS EN 1996-1-1

  •  

    PROPERTY

    BLOCK WIDTH

    100mm

    115mm

    125mm

    140mm

    190mm

    215mm

    0.91 m²k/W

    1.05 m²k/W

    1.95 m²k/W

    1.73 m²k/W

    ‘R’ Value

    1.14 m²k/W

    1.27 m²k/W

    Walled Weight

    Sound Reduction

    Block Weight

    Fire Resistance

    61 kg/m²

    40 Rw, dB

    7.3 kg

    4 Hours

    70 kg/m²

    40 Rw, dB

    8.4 kg

    4 Hours

    76 kg/m²

    41 Rw, dB

    9.1 kg

    4 Hours

    85 kg/m²

    115 kg/m²

    42 Rw, dB

    45 Rw, dB

    10.2 kg

    13.8 kg

    4 Hours

    6 Hours

    130 kg/m²

    46 Rw, dB

    15.6 kg

    6 Hours

  •  

    BLOCK WIDTH

    BLOCKS PER PACK

    m² PER PACK

    WEIGHT PER PACK kg

    BLOCKS PER m²

    100mm

    115mm

    125mm

    56

    48

    48

    7.94

    6.80

    6.80

    • A range of a wagon sizes are available, with or without pallets. Ring your local Sales office for further details.
    • Other thicknesses available to order but are not kept as general stock sizes
    • Block weight is at the equilibrium moisture content of 3% by weight
    • Pack weight allows for maximum moisture content when packed, actual delivered weight will be less
    • m² per pack figure based on the inclusion of conventional 10mm mortar joints
    • Health & Safety guidelines recommend that precautions be taken when using blocks over 20kg in weight.

    140mm

    190mm

    215mm

    40

    32

    28

    5.67

    4.54

    3.97

    498

    491

    534

    7.05

    498

    541

    536