• Available in solid and hollow format for the ultimate versatility with a standard strength.
  • Manufactured from carefully selected aggregates to give both a close texture and a natural colour.
  • For use internally and externally (solid units only) both above and below dpc.


Suitable for use above and below dpc, both internally and externally.


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.

Mean unit strength:

7.3 N/mm².

Colour/ Finish:

Natural colour with fairfaced finish.

Thermal conductivity:

  • Internal: 1.22 W/mK.
  • External: 1.31 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:
45-80-50/300 Aggregate concrete 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

Masterdenz Fairfaced


[440 x 215 x 75 mm]
[440 x 215 x 100 mm]
[440 x 215 x 140 mm]
[440 x 215 x 140 mm, hollow]
[440 x 215 x 140 mm, cellular]
[440 x 215 x 140 mm, multi cellular]
[440 x 215 x 190 mm]

Manufacturer details

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