• Excellent sound reduction block.
  • Offers low air permeability ensuring good sound reduction values, as well as thermal performance.
  • Consistent close textured face, ideal for direct decoration.


Locally sourced materials under strict environmental and social legislation. 100% of the product can be recycled thus reducing the amount of material that is sent to landfill.

Related literature

The following content references this product:

Standard product features


BS EN 771–3 and complies with Category 1 masonry units.

Colour/ Finish:

Natural colour with paintgrade finish.

Thermal conductivity:

  • Internal: 0.60 W/mK.
  • External: 0.64 W/mK.

Reaction to fire:

BS EN 13501-1: A1.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-80-50/304 Autoclaved aerated concrete (AAC) blocks

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Aggregate Industries - Masterblock concrete blocks


+44 (0)1285 646900

Product reference

Masterlite Pro Acoustic


[100 mm]
[140 mm]


[7.3 N/mm²]
[10.4 N/mm²]

Manufacturer details

North End Farm Works,
Ashton Keynes,
Wiltshire, SN6 6QX
Tel +44 (0)1285 646900
Fax +44 (0)1285 646891
NBS Plus