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Strocks - Unfired Clay Blocks

Verified by manufacturer 2 months ago

H G Matthews Third party certifications:
  • BRE Certificate

    BRE Certificate

    Certificate type

  • Warringtonfire

    Warringtonfire

    Certificate type

A structural block of clay-rich earth and chopped straw. Strocks can be used as the inner skin of an external wall and for internal load-bearing walls typically up to three storeys.

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Application

Unfired clay blocks suitable for:

  • Internal load-bearing walls.
  • High mass internal walls.
  • New build homes.
  • Repair of earthen buildings.
  • Structural base to earth floors.

Description

Strocks are unfired earth blocks made from clay-rich earth and chopped straw. Strocks are particularly suitable for structural walls, supporting up to three storeys.


Features and benefits:

  • Structural: Suitable for robust structural walls.
  • Homogenous: Thin bed clay mortar creates a seamless earth wall.
  • Thermal: Captures warmth during the day and radiates it at night.
  • Humidity: Regulates indoor humidity naturally to 50%.

General information

Color

Brown

Cream

Finish

Natural

Material

Clay

Shape

Rectangle

Length

425 mm

Width

160 mm

210 mm

Height

100 mm

Warranty description

Other

Uniclass

Pr_20_93_52_14 Clay blocksPrimary

CAWS

F10/36 Concrete common blockwork

F10/355 Concrete common blockwork

Specification data - Clay blocks

Standard

To BS EN 771-1.

Appearance

Standard common blocks.

Block type

For use in protected masonry construction.

Work size (length x width x height)

425 x 160 x 100 mm.

425 x 210 x 100 mm.

Accessory and special shape types

Angle blocks (45°).

Corner blocks.

Coursing blocks.

Double bullnose.

Double cant.

End blocks.

External 45° angle.

External 90° corner.

Full reveal blocks.

Half reveal blocks.

Internal 45° angle.

Internal 90° corner.

Pistol.

Sill.

Single bullnose.

Single cant.

Bespoke.

Guidance for specification option:

Cut to any shape. Insert requirements.

Tolerances

-

Mean value

T2.

Range

R1.

Compressive strength

-

Mean compressive strength (minimum)

2.96 N/mm².

Guidance for specification option:

Of individual unit to BS EN 772-1:2015.

Category

I.

Density

-

Gross dry

1400 kg/m³.

Net dry

1350 kg/m³.

Tolerance

D2.

Configuration

Rectangular and frogged.

Recycled content

30% (minimum) to BS EN ISO 14021.

Active soluble salts content category

S1.

Durability designation

F1.

Thermal conductivity

0.27 W/mK.

Water vapour permeability

7.3 µ.

Reaction to fire

Class A1 to BS EN 13501-1.

Modulus of elasticity

303.3 MPa.

ShearStrength

Inital: 0.05 N/mm²; Characteristic: 0.04 N/mm².

Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Material

Clay

Manufacturing plant location

Embodied carbon

A1-A3 (production stage) as defined in BS EN 15804

0.01 kg CO₂ eq/unit

Self declared

Recyclability

100%

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

10 %

Expected Life

Lifetime

Third party certifications

BRE Certificate

BRE Certificate

HG Matthews Strocks Masonry Compressive Strength Testing

Warringtonfire

Warringtonfire

Reaction to fire test report

BRE Certificate

BRE Certificate

HG Matthews Strocks Masonry Testing

Literature

Strocks - Internal partition with breathable finish

Strocks - Internal partition with breathable finish

Strocks - External wall with structural timber, insulation and render finish

Strocks - External wall with structural timber, insulation and render finish

Strocks - External wall with steel wind post

Strocks - External wall with steel wind post

Strocks - External wall with insulation and render finish

Strocks - External wall with insulation and render finish

Strocks - External wall with concrete wind post

Strocks - External wall with concrete wind post

Strocks - External cavity wall with traditional brick and insulation

Strocks - External cavity wall with traditional brick and insulation

Strocks Supplier Note

Strocks Supplier Note

Humidity Information

Humidity Information

Case studies

The Nursery, Bellingdon

The Nursery, Bellingdon

The Orchard Building, Serge Hill Project

The Orchard Building, Serge Hill Project

Wolves Lane, Tottenham

Wolves Lane, Tottenham

Tribeca, Kings Cross

Tribeca, Kings Cross