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Tarmac

Dense, Lightweight Aggregate and Aircrete Concrete Blocks

Tarmac Topblock, part of Tarmac's Building Products group, is the UK's leading manufacturer of concrete blocks with specifications to match the most demanding of building requirements. With a unique product range including dense, lightweight aggregate and aircrete blocks, Tarmac Topblock is able to offer a product for every application from an extensive network of production facilities.

The blocks featured here represent a selection of the products available. To request specific information on the full range, visit our website www.topblock.co.uk or contact connect-direct on 08456 044 114.

Durox Aircrete wall blocks

Supabloc

Key applications are solid walls, loadbearing and non-loadbearing walls. Supabloc (3.6N/mm²) is primarily used to form the loadbearing inner leaf of cavity walls. Other key applications are solid walls, below dpc, and partitions both loadbearing and non-loadbearing.

Supabloc 4, 7 and 10

Durox Supabloc 4 may be used to form cavity separating walls. Other key applications include the rendered outer leaf of cavity walls, below dpc, and in situations where 4.2N/mm² compressive strength is demanded. Supabloc 7, and 10 meet the compressive strength criteria specified in the Building Regulations Approved Document A. Suitable for multi-storey applications, it may be used in outer and inner leaves of cavity walls, internal partitions (loadbearing and non-loadbearing), below dpc, and in cavity separating walls.

For details of cavity separating wall constructions using Supabloc 4 and 7 which comply with the latest Robust Details, please consult our Technical Services Department for details of recommended designs for separating walls.

System 500, 600 and 700

Durox System is recognised as a Modern Method of Construction (MMC) combining the thermal efficiency of larger format Durox aircrete with the significant productivity gains associated with the use of thin layer mortars. System is produced in three strengths, 3.6, 4.2 and 7.3N/mm², and in a range of coursing heights. Its primary applications are the inner leaf of external walls and solid external walls as well as cavity separating walls.

Foundation Blocks

Durox Foundation blocks form a solid wall below dpc, to support solid or cavity walls. Because of its excellent insulating properties, the product provides perimeter insulation to ground floors. Construction time may be halved compared to cavity construction. Wall ties and cavity fill are no longer needed and the risk of collapsed cavities is eliminated. The wall also becomes stable soon after laying. Durox Foundation blocks are available in 3.6 and 7.3N/mm strength.

Floor Blocks

Durox Floor blocks are suitable for use in beam and block ground and internal* floors. They are light and quick to install, and form an immediate working platform which will also provide effective sound and thermal insulation. Coursing bricks or slips are available for use with this product. When installed as a ground floor they contribute towards the thermal insulation of the floor by reducing the amount of additional insulation that is required. Independent tests show that the sound reduction (Rw) of a beam and block internal floor exceeds the requirements of the Building Regulations.

* refers to internal floors in houses

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Tarmac An Overview of Tarmac UK Ltd Mortars Blocks Precast Flooring

Tarmac Topblock Durox concrete blocks

Tarmac Topblock Ltd
Millfields Road
Ettingshall
Wolverhampton
WV4 6JP

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National Sales:
0845 606 2468

Technical Services:
0870 242 1489

Literature/Marketing:
08456 044 144

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