Check local branch stock
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![IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 1650mm]( "IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 1650mm")
IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 1650mm
Hi-therm+ is up to five times more thermally efficient than a standard steel lintel. IG Lintels are engineered to be the most structurally and thermally efficient lintels available. We have continually evolved and expanded our product range to reflect... -
![IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 1800mm]( "IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 1800mm")
IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 1800mm
Hi-therm+ is up to five times more thermally efficient than a standard steel lintel. IG Lintels are engineered to be the most structurally and thermally efficient lintels available. We have continually evolved and expanded our product range to reflect... -
![IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 1950mm]( "IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 1950mm")
IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 1950mm
Hi-therm+ is up to five times more thermally efficient than a standard steel lintel. IG Lintels are engineered to be the most structurally and thermally efficient lintels available. We have continually evolved and expanded our product range to reflect... -
![IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2100mm]( "IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2100mm")
IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2100mm
Hi-therm+ is up to five times more thermally efficient than a standard steel lintel. IG Lintels are engineered to be the most structurally and thermally efficient lintels available. We have continually evolved and expanded our product range to reflect... -
![IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2400mm]( "IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2400mm")
IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2400mm
Hi-therm+ is up to five times more thermally efficient than a standard steel lintel. IG Lintels are engineered to be the most structurally and thermally efficient lintels available. We have continually evolved and expanded our product range to reflect... -
![IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2550mm]( "IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2550mm")
IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2550mm
Hi-therm+ is up to five times more thermally efficient than a standard steel lintel. IG Lintels are engineered to be the most structurally and thermally efficient lintels available. We have continually evolved and expanded our product range to reflect... -
![IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2700mm]( "IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2700mm")
IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2700mm
Hi-therm+ is up to five times more thermally efficient than a standard steel lintel. IG Lintels are engineered to be the most structurally and thermally efficient lintels available. We have continually evolved and expanded our product range to reflect... -
![IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2850mm]( "IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2850mm")
IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 2850mm
Hi-therm+ is up to five times more thermally efficient than a standard steel lintel. IG Lintels are engineered to be the most structurally and thermally efficient lintels available. We have continually evolved and expanded our product range to reflect... -
![IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 3000mm]( "IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 3000mm")
IG Lintels Hi-Therm Steel Lintel Standard Load HT/S150 3000mm
Hi-therm+ is up to five times more thermally efficient than a standard steel lintel. IG Lintels are engineered to be the most structurally and thermally efficient lintels available. We have continually evolved and expanded our product range to reflect... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX100 1200mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX100 1200mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX100 1200mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX100 1500mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX100 1500mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX100 1500mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX100 1800mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX100 1800mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX100 1800mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX100 2100mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX100 2100mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX100 2100mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX100 2400mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX100 2400mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX100 2400mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX100 2700mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX100 2700mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX100 2700mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX100 3000mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX100 3000mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX100 3000mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX100 3300mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX100 3300mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX100 3300mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX100 3600mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX100 3600mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX100 3600mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX100 900mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX100 900mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX100 900mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX140 1200mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX140 1200mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX140 1200mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX140 1800mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX140 1800mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX140 1800mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX140 2100mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX140 2100mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX140 2100mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX140 2700mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX140 2700mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX140 2700mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up... -
![IG Lintels Solid Wall Box Lintels Standard Load BOX140 900mm]( "IG Lintels Solid Wall Box Lintels Standard Load BOX140 900mm")
IG Lintels Solid Wall Box Lintels Standard Load BOX140 900mm
Suitable for both internal and external use, Box Lintels can be used with a variety of wall thicknesses helping to guarantee that the Lintel will fit your requirements. Capable of withstanding wet masonry as soon as it is installed helps to speed up...
Lintels
What is a lintel?
Lintels are structural supports that are placed horizontally across the span of a window or door frame. They are used because the opening creates a weakness making the wall vulnerable. Therefore, using lintels builds strength whilst adding load-bearing properties.
At Howarth Timber & Building Supplies we offer a range of steel and prestressed lintel options that are suitable for various domestic, industrial and commercial applications.
Purchase online today or contact your local branch for expert advice and guidance.
Frequently Asked Questions
What is the difference between steel and concrete lintels?
The biggest difference, for many people, is the cost. Concrete is a substantially cheaper choice than its steel alternative. However, it’s important to take other factors into account; besides cost; before making a purchase to ensure that you are getting the best product for your needs. Steel is naturally stronger than concrete, whilst being easier to work with, as they have a lighter weight. However, some higher strength prestressed concrete lintels can offer more support than steel. If you are working in a coastal area, the salt that natural lingers in the air can cause steel lintels to corrode whereas concrete is resistant to this. Prestressed lintels are the preferred option for underground applications, as galvanised steel tends to be weakened by moisture with a high likelihood of rust occurring.
What is a lintel block?
Lintel blocks are prefabricated and often made with pre-stressed concrete. They can combine to create lintel beams.
How to do I calculate the load on a lintel?
To calculate the load of a lintel, you can use a product selector tool to narrow the range of lintel options by filtering for the type of wall construction and the loading condition.
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