1. Unique identification code of the product type:

Aggregate Concrete Masonry Unit - Keystone Retaining Wall Unit

2. Type, batch or serial number or any other element allowing identification of the construction product as required under Article 11(4) of the CPR:

KEYCOMSF02 - Keystone Compac - Smooth Faced - York (Category II Masonry Unit)
Dimensions, L x W x H (mm): 455 x 300 x 200 (H = unit height)

3. Intended use or uses of the construction product, in accordance with the applicable harmonized technical specification, as foreseen by the manufacturer:

Intended use for the construction of retaining wall systems, in conjunction with fixing pins (wall system unreinforced or used in conjunction with soil reinforcing geogrid)

4. Name, registered trade name or registered trade mark and contact address of the manufacturer as required under Article 11(5):

Supreme Concrete Limited
Coppingford Hall, Coppingford Road, Sawtry, Cambridgeshire, PE28 5GP, UK

5. System of assessment and verification of constancy of performance of the construction product as set out in Annex V:

System 4

6. In case of the declaration of performance concerning a construction product covered by a harmonized standard:

EN 771-3:2011 +A1:2015
Notified Body: Not applicable

7. Declared performance:

Essential CharacteristicsPerformanceHarmonised
Dimensions: L x W x H (mm): (1)455 x 300 x 200EN 771-3:2011 +A1:2015
Dimensional tolerances:
Tolerance Category:
Plane parellelism:
Configuaration:(1)Group 1 unit to EN 1996-1-1 (EC6)
Compressive strength:(1)
Mean compressive strength:
Direction of load:
Unit Category
40.0 N/mm2
Perpendicular to bed faces
Category 2
Dimensional stability - moisture movement:(1) 0.5 mm/m
Shear bond strength (fixed value):(1)NPD N/mm2
Flexural bond strength:(1) NPD N/mm2
Reaction to fire:(3) A1 (Commission Decision 2000/605/EC)
Water absorption:(3) 6 g/m2s
Water vapour permeability:(4) 5/15 μ (Tabulated value)
Direct airbourne sound insulation:(5)
Gross dry density:
NPD kg/m3
(as above)
Thermal resistance: 1.00 W/(m.K)
Durability against freeze/thaw: XF2
Dangerous substances: None

(1) for units intended to be used in elements subject to structural requirements.
(2) for units intended to be used in elements subject to fire requirements.
(3) for units intended to be used in damp proof courses or in external elements with exposed face.
(4) for units intended to be used in external elements.
(5) for units intended to be used in elements subject to acoustic requirements.

For additional information see website:

8. The performance of the product identified in points 1 and 2 is in conformity with the declared performance in point 7. This declaration of performance is issued under the sole responsibility of the manufacturer identified in point 4.

Signed for and on behalf of the manufacturer by:

Name: Will Hicks
Position: Ibstock Concrete Operations Director
Place: Coppingford Hall, PE28 5GP, UK
Date: 3rd February 2020