Product Sizes
They are available in both metric and modular size ranges and are suitable for plastering
Group 1 (solid) 13N/mm², 18N/mm², 24N/mm², 30N/mm²,
Group 2 (cavity) 13N/mm², 18N/mm²
(I.S. EN772-1 fm dry).The blocks can be integrally coloured for identification purposes, texture can vary due to differing source materials and production methods.
Standard Concrete Blocks
- I.S. EN ISO 9001:2000 quality management system
- I.S. EN 771-3:2011 Specification for Masonry Units – Part 3: Aggregate Concrete Masonry Units using an NSAI, System 2+ Certificate of factory production control.
- Roadstone products also meet the statutory requirements of the relevant sections of The IrishBuilding Regulations 2014
Thickness Options
- 450mm Range 100mm / 140mm / 215mm
- 400mm Range 90mm / 190mm
Standard Specials
- Quoins, Cavity, Closer, Lintels, Bond Beams
- The full Forticrete range of shapes and sizes can be made to order .
Compressive Strength
- Available to I.S. EN772-1 fm dry
- Group 1 (solid) 7.5N/mm² 13N/mm² and 18N/mm²
- Group 2 (cavity) 4.5N/mm² 5N/mm² and 13N/mm²
Fire Resistance
- Euro code 6 – I.S. EN 1996 Design of Masonry Structures – Part 1-2: General Rules – Structural Fire Design, defines the methods and calculations to determine the fire resistance of concrete block walls. Table N.B3.1 to table N.B3.6 of annex A, Roadstone Blocks have a Class A1 Fire rating
Thermal Properties
- I.S. EN 1745 Masonry and masonry products-Methods for determining design thermal values . table A3
- Typical Thermal resistance “R” value of 100 mm solid block = 0.084 (m²K/W)
- Typical Thermal resistance “R” value of 215 mm cavity block = 0.210 (m²K/W)