Steel Lintels and Replacement
A steel lintel is a metal beam or bar that supports and reinforces brickwork above windows, doors and other openings in walls. Steel lintels are an important part of the build, providing essential structural strength to openings that can be vulnerable to failure, damp or draughts. In older buildings, steel lintels are often visible as part of the structure of the opening, but in more modern buildings they may be hidden behind other materials such as plaster or brickwork.
Steel lintels are available in a wide range of sizes, shapes and types and can be used to support single or multiple openings up to several metres in width. They can also be custommade to fit a specific opening size, shape or purpose and can be tailored to meet fire, safety and acoustic requirements.
Steel lintels are generally positioned above the opening in the wall so that the lintel’s weight is spread evenly and distributed along the length of the wall. Steel lintels should be securely fastened with anchors and masonry bolts, and the joints should be packed and properly supported with mortar.
When replacing a steel lintel, it is important to assess the condition of the old lintel and ensure that the new lintel is strong enough to support the same load. The new lintel should also be of the same size, shape and type as the old lintel.
When replacing a lintel it is best to contact a professional engineer or contractor who can advise on the best size, shape and type of lintel for the job and recommend the most appropriate method for ensuring structural integrity.
To prepare for the replacement, the existing lintel will have to be carefully removed or cut away from the wall. The opening should then be inspected and the wall, if needed, repaired where any cracks or other damage is discovered. If the old lintel was mortared in, then the mortar may need to be chipped away and replaced with fresh mortar.
Before installing the new lintel, the manufacturer’s instructions should be followed when handling and installing in order to ensure that the correct safety precautions are taken. When handling, the lintel should be held securely to prevent slipping or twisting which may cause injury. Improper handling may also cause damage to the lintel, which could weaken its strength.
When positioning the lintel in the opening the lateral supports should be installed and checked for level to ensure the lintel is evenly supported and the opening is accurately framed. As previously noted, lintels should be securely fastened with anchors and masonry bolts, as well as accurately packed with mortar on both sides and supported at the ends by masonry abutments.
When checking the lintel after installation, it is important to ensure that it is level and securely fastened, which can then be checked structurally with a plumb line and a spirit level. Once fitted, any exposed edges should be finished and steel lintels should be protected from weathering by applying a suitable paint or sealant.
In conclusion, steel lintels are essential for providing strength and stability for brickwork above openings such as windows and doors, but as with all building materials, it is important that they are maintained and replaced when necessary. To ensure the best outcome, it is recommended that a professional engineer or contractor is consulted to carry out the replacement and ensure that the appropriate safety procedures and building codes are adhered to.
