Strocks - Unfired Clay Blocks
Verified by manufacturer 5 days ago
BRE Certificate
Certificate type
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.
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 | |
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 carbonA1-A3 (production stage) as defined in BS EN 15804 | 0.01 kg CO₂ eq/unit Self declared |
Recyclability | 100% |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 10 % |
Expected Life | Lifetime |
Third party certifications
BRE Certificate
HG Matthews Strocks Masonry Compressive Strength Testing
Warringtonfire
Reaction to fire test report
BRE Certificate
HG Matthews Strocks Masonry Testing
Literature
Strocks - Internal partition with breathable finish
Strocks - External wall with structural timber, insulation and render finish
Strocks - External wall with steel wind post
Strocks - External wall with insulation and render finish
Strocks - External wall with concrete wind post
Strocks - External cavity wall with traditional brick and insulation
Strocks Supplier Note
Humidity Information
Case studies
The Nursery, Bellingdon
The Orchard Building, Serge Hill Project
Wolves Lane, Tottenham
Tribeca, Kings Cross