What Is a Lintel?
A lintel is a structural support installed above doors, windows and other openings to carry the load of masonry, floors or roof structures above. In UK construction, lintels are most commonly manufactured from galvanised steel or precast concrete and are selected based on span, wall type and loading requirements.
Choosing the correct lintel is critical for structural stability and compliance with Part A of the Building Regulations. Factors such as cavity width, bearing length, insulation requirements and imposed loads all influence the specification.
Types of Lintels Available
We supply lintels for virtually every common UK wall construction, including:
- Cavity wall lintels for standard masonry cavities
- Solid wall and box lintels for single leaf construction
- Timber frame lintels designed for modern timber structures
- Thermally broken lintels to reduce cold bridging
- Concrete lintels and padstones for traditional builds
Stock includes leading UK manufacturers such as Catnic, Stressline, Birtley and Naylor, with sizes available for small domestic openings through to wider structural spans.
Choosing the Correct Lintel
Selecting the right lintel depends on more than just span. Wall construction, load path, floor loads above, and required bearing lengths must all be considered. As a general rule, lintels require a minimum end bearing (commonly 150mm, though manufacturer guidance should always be followed).
If you are unsure which lintel is suitable for your project, our detailed installation guides and span resources can help, or you can contact our team for practical advice before ordering.
Installation & Compliance
Correct installation is essential to ensure structural performance. Lintels must be installed level, fully bedded on suitable mortar, and supported with the correct bearing and padstones where required. Weep vents and cavity trays may also be necessary depending on wall design.
For detailed installation guidance, span tables and compliance advice, see our Complete Guide to Lintels in the UK.
For cavity wall construction around openings, you may also need wall ties and frame ties to suit the wall build-up, cavity width and project specification.
Why Buy Lintels from Wade?
- Extensive UK stock availability
- Steel and concrete options for all wall types
- Fast, tracked UK delivery
- Trade and domestic supply
- Knowledgeable support team
Lintel FAQs
What size lintel do I need?
The correct lintel size depends on the clear opening width, wall type and the load above. Most manufacturers require a minimum 150mm bearing at each end, meaning the lintel must be longer than the opening itself. Always refer to manufacturer span tables or seek advice before ordering.
Are steel lintels better than concrete lintels?
Steel lintels are generally lighter, easier to handle and available in longer spans, making them popular for cavity wall construction. Concrete lintels are typically used for solid walls or smaller openings. The correct choice depends on structural requirements and wall design.
Do lintels require padstones?
Padstones may be required where high loads are present to spread the load safely into the supporting masonry. Structural drawings or Building Control guidance should be followed where applicable.
How much bearing does a lintel need?
Most UK lintel manufacturers recommend a minimum of 150mm end bearing on each side, although this can vary depending on span and load. Always check the specific product installation guidance.
Do I need Building Control approval to replace a lintel?
Replacing a structural lintel often falls under Part A of the Building Regulations. In many cases, Building Control notification or approval may be required, particularly if structural loads are being altered.
