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We are Part of the Thomas Armstrong Group
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 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
ADVANTAGES
UKCA CERTIFICATIONS
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
BS EN 1745
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
Some blocks sizes and strengths are made to order. Please check with our sales office on block availability as far in advance as possible before the blocks are required.
BS EN 1996-1-1
PROPERTY
BLOCK WIDTH
100mm
115mm
125mm
140mm
190mm
215mm
‘R’ Value
0.91 m²k/W
1.05 m²k/W
1.14 m²k/W
1.27 m²k/W
1.73 m²k/W
1.95 m²k/W
Walled Weight
Sound Reduction
Block Weight
Fire Resistance
Walled weight is for a single-leaf wall, plastered on both sides.
Sound Reduction Rw values are based on wall mass and assumes a plastered finish on both sides.
The block weights quoted above are approximate and include the typical additional weight from the moisture content.
Fire resistance periods to BS EN 1996-1-2 for a single-leaf, non-loadbearing plastered wall. Based on the inclusion of conventional 10mm mortar joints.
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
140mm
190mm
215mm
40
32
28
5.67
4.54
3.97
498
491
534
7.05
498
541
536