MATERIALS

Lintels are manufactured to all specifications.

Lintrays are manufactured to specification A/1 and A. Please contact our technical department or click here if you require more information on lintel life expectancy.

A/ Stainless Steel - Supplied in correct grade to suit specific applications e.g. grade 316 for ultra highly corrosive environments. A/1 with additional protective coating*, A without.

B/ Mild Steel - Complying with BS4360. B/1 with additional protective coating. Also paint finishes to your requirement.

C/ Structural Steel - Complying with BS4360. Hot dipped, zinc galvanized, after manufacture to BS729 with a minimum coating weight of 920g/m 2 including both sides. C/1 with additional protective coating*, C without.

D/ Galvanized Steel - Complying with BSEN10142 1991. Lintels are manufactured from continuously hot dipped, zinc coated low carbon steel sheets, cold formed with a minimum coating weight of 600g/m 2 including both sides. D/1 with additional protective coating*, D without.

Additional Protective Coating*

The additional protective coating consists of self etch primer followed by 100 microns of black bituminous paint.

Installation - Lintels should be checked on delivery and only undamaged lintels used. An end bearing of at least 150mm (Click here for Lintray bearing) is required and lintels should be fully bedded on brick laying mortar, ensuring that the front and back of the lintel is level before proceeding. The inner and outer leaves supported by the lintel must be raised together to avoid excessive eccentricity of loading.

Blocks should continue for the full length of the inner flange. Loads should not exceed the stated figures with a ratio of 1:5 (outer to inner) for the SC ranges and 1:19 for the MC and HC ranges. Consult our technical department before exceeding these loads or applying point loads. A supported cavity wall should incorporate suitable wall ties above the lintel to provide stability.

In Scotland, Northern Ireland and areas of severe exposure, (as defined in BRE Digest 127) seperate damp proof protection is required over all lintels unless a LINTRAY™ is used.

The safe working loads of all lintels are derived by calculations in conjunction with computer modelling technology and tests at the University of Glamorgan in accordance with the requirements of BS5977: Part 2: 1983.

Quality - Quality assured to BS EN ISO 9002:

• 1994. All products comply with BS 5977: Part 2:
• 1983 for corrosion, protection, workmanship and material.

Technical Advisory/Design Service - We provide an expert advisory and design service completely free of charge. Technical advice on specification, design or installation. Structural loading calculations. Design of special lintels in accordance with your exact requirements including computer produced detailed dimensioned drawings.

Insulation - All cavity wall lintels are fully insulated with close fitted, CFC free, high density polystyrene, manufactured in accordance with BS3837; Part1:1986. Formed to the exact profile of the lintel, throughout the entire length of the lintel.