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Lintel Installation Guide
Ensure lintel is level along its length.
Ensure lintel is level along its width.
Lintel Position within a Cavity Wall
Propping a lintel is sometimes practiced to facilitate speed of construction. It should only be introduced after initial masonry load has been applied to the lintel.
When propping a lintel, a horizontal timber plank should be placed along the underside of the lintel and suitable* props secured into place at maximum 1200mm centres.
* Suitability of props is the responsibility if site management.
Damp Proof Course DPC
In accordance with BS EN 1996-2:2006 and NHBC requirements all external wall lintels MUST be installed with a flexible damp proof course with the exception of those adequately protected by an eaves overhang or similar form of protection. Stop ends should be provided as specified by BS EN 1996-2:2006 and the NHBC, to avoid moisture entering the cavity near the reveals. Proprietary stop ends should be used or alternatively the DPC should extend to the edge of the external lintel flange and 50-150mm beyond the end of the lintel (depending on coursing) to allow formation of an integral stop end at a suitable perpendicular joint.
Provide weep holes at a maximum of 450mm intervals (at least two per opening) with fair-faced masonry.
Consider the use of soffit cladding for all coastal sites.
Lintels should be stored on wooden skids on flat ground. Less2build recommends that they are stored one bundle high only, unless adequate measures are taken to ensure that the stack will remain stable. The banding straps are taut and care should be taken when cutting these to avoid personal injury and/or the bundle collapsing.
Ensure that all packaging and waste are disposed of responsibly. Due care must be given to the environmental impact of the disposal method.
COSHH- Control of Substances Hazardous to Health
Lintels are fabricated from galvanised or stainless steel and pose no toxicity hazard, they are also insulated with preformed polystyrene. Most lintels contain a perforated steel key plate for rendering purposes and/or a steel strengthening plate for heavy duty requirements which also poses no hazard.
All components and materials in our products are considered as non-hazardous to health under normal conditions of use as determined by COSHH Regulations 1999