Wooden lintels are most often found on older houses as well as timber-framed houses either in the external wall or hidden behind a stone slab. Wooden lintels obviously run the risk of suffering from rot, but properly treated can last for a surprisingly long time.
Unless you are going for a particular look with your property, or if you are replacing an existing wooden lintel, it is probably better to use one of the modern alternatives to wooden lintels.
Not used on their own, brick lintels are usually supported by stone, metal or wooden lintels over external doorways. Most often, a flat steel strip will support the bricks. The bricks are there for decoration rather than structural support. In some instances, bricks can be drilled through, and a supporting metal rod passed all the way through the holes and tied into the brickwork. Only suitable for smaller spans, stone lintels are usually found over external doorways of older houses.
In most cases where a stone lintel has been used, a secondary wooden lintel will have been used behind it. Stone lintels on their own are poor under tension, so if you are considering using one, take advice on how much the lintel will need to support.
Concrete lintels usually have steel rods running the length of the beam to increase their strength under tension. You can buy pre-stressed concrete lintels, which are significantly lighter than standard concrete.
This type of concrete lintel is suitable for longer spans than the standard type, where the weight would make them difficult to handle. Concrete lintels are not very nice to look at, so are normally used where the lintel will be hidden. Most modern houses will have been constructed using pressed and galvanised steel lintels due to their strength, flexibility and ease of use. Steel lintels are widely used in both brick-built and wooden framed houses, and you can even buy them perforated, ready to be plastered directly on to.
Knocking two rooms into one would usually require a heavy-duty rolled steel joist due to the length of the span. By Following these 3 steps you will be well on your way to choosing the correct lintel for the job in hand. If you are not sure about any of the above, contact your local expert team with our Branch locator , they will put you in touch with a lintel Technical team who can assist.
They can accept a wide range of surface finishes without special preparation and come in a variety sizes and loadings. This makes concrete lintels reliable and durable with a lower construction cost, fewer joints and a high strength to section ratio. Prestressed concrete lintels are one of the most reliable, durable and widely used in the construction industry, boasting a number of benefits including lower construction cost, fewer joints and a high strength to section ratio.
Prestressed lintels have high-tension steel wires running through the middle. The lintels have excellent thermal properties and are less susceptible to moisture and chemical corrosion. The lintel should be installed with a minimum end bearing of mm, so measure your opening and add at least mm. Unlike steel lintels, a concrete lintel is often used in visible areas and painted if required.
The in-built foam or polystyrene insulation helps to retain warmth through insulation and reduces condensation. All of our steel lintels are galvanized to protect against premature rust and corrosion and meet the Thermal Performance requirements of all UK Building Regulations.
Buildbase has a large range of standard cavity lintels available in a variety of widths from 70mm to mm, with lengths from mm to mm. For thicker steel and when a lintel with a longer span is required, Buildbase has a range of medium and heavy duty lintels for mm cavity widths stocked in lengths from mm to mm. Box lintels are used for solid wall construction, with the mm ranges used for single skin internal walls and the mm ranges used for double skins, typically external walls, with no cavity.
The lintel is designed to carry the full load of wet masonry as soon as it is installed but must have a minimum end bearing of mm each side of the opening and be bedded on mortar with all perpendicular joints filled with mortar. The box lintel is galvanised to protect the steel from premature rust and corrosion and has perforations along its length acting as a plaster key and can be insulated if required.
Box lintels are available in two options to support mm wide walls with lengths from mm to mm, and mm wide walls with lengths from mm to mm. Constructed from galvanised steel, single leaf lintels are used to support single leaf walls or the external openings the outer leaf of a cavity wall, adding strength to the construction. Single leaf lintels are suitable for faced brick or block walls and can be used for meter reading boxes through to heavier applications. Lintels over mm must be propped until masonry is fully loaded and cured.
Supreme padstones are high strength dense concrete blocks designed to support the weight of load-bearing lintels whose ends rest on the padstone. Concrete padstones are a vital part of construction as they designed not to be crushed like regular blockwork when subjected to the pressure of the steel or concrete lintel and the weight above.
Harvey Steel Lintels. Buildbase and Lintels. We stock all three major lintel suppliers — Catnic, IG and Birtley. With s of lintels in stock, nationwide delivery serviced from our 16 National Depots with the added benefits of same day collection and Next working day delivery available for s of our products.
If you need quality, reliability and fast delivery. Our team of experts are always on hand to solve your lintel queries, whether that is choosing the correct lintel or enquiring about a price help is at hand.
In addition to we have a handy guide to choosing the correct lintel for you job. This simple and easy to follow guide will equip even lintel novices with the tools they need to start the selection process for your lintel needs.
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Flush Door Blanks. Do you need to remove the ads? A lintel is a beam placed across the openings like doors, windows etc.
The width of lintel beam is equal to the width of wall, and the ends of it is built into the wall. Lintels are classified based on their material of construction. In olden days of construction, Timber lintels were mostly used. But now a days they are replaced by several modern techniques, however in hilly areas these are using. The main disadvantages with timber are more cost and less durable and vulnerable to fire.
If the length of opening is more, then it is provided by joining multiple number of wooden pieces with the help of steel bolts which was shown in fig a. In case of wider walls, it is composed of two wooden pieces kept at a distance with the help of packing pieces made of wood.
Sometimes, these are strengthened by the provision of mild steel plates at their top and bottom, called as flitched lintels. These are the most common type, especially where stone is abundantly available. The thickness of these are most important factor of its design.
These are also provided over the openings in brick walls. Stone lintel is provided in the form of either one single piece or more than one piece. They are used up to spans of 2 meters. In the structure is subjected to vibratory loads, cracks are formed in the stone lintel because of its weak tensile nature.
Hence caution is needed. These are used when the opening is less than 1m and lesser loads are acting. Its depth varies from 10 cm to 20 cm, depending up on the span. Bricks with frogs are more suitable than normal bricks because frogs when filled with mortar gives more shear resistance of end joints which is known as joggled brick lintel. These are used when loads are heavy and span is greater than 1m. The depth of reinforced brick lintel should be equal to 10 cm or 15 cm or multiple of 10 cm.
Vertical stirrups of 6 mm diameter are provided in every 3 rd vertical joint. Main reinforcement is provided at the bottom consists 8 to 10 mm diameter bars, which are cranked up at the ends. These are used when the superimposed loads are heavy and openings are large.
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