How and where to use guide
SK150270 KEYSTONE S/K-150 X 2700mm CAVITY LINTEL
Typical applications
The S/K-150 cavity lintel is suitable for standard openings in cavity wall construction, including windows, doors, and other masonry openings. The 2700mm length accommodates typical opening widths in residential and light commercial masonry work. This lintel is appropriate for use in both new build projects and renovation work where cavity wall construction is specified.
- Window and door openings in cavity walls
- Standard masonry openings up to 2700mm span
- New build and renovation cavity wall projects
- Load-bearing applications in masonry construction
Installation and bearing requirements
Proper installation is critical for structural integrity. The lintel must be supported on both the inner and outer leaves of the cavity wall with adequate bearing length on each side. Minimum bearing recommendations should be confirmed with structural specifications for your project. The lintel must be bedded in mortar on both leaves to distribute loads evenly across the wall thickness. Ensure the lintel is level and fully supported before proceeding with further masonry work.
- Bed lintel in mortar on both cavity leaves
- Ensure adequate bearing length on inner and outer leaves
- Check lintel is level before building above
- Allow mortar to cure fully before loading
On-site handling and positioning
Steel lintels are heavy and require appropriate lifting equipment and safe handling procedures. Position the lintel carefully to avoid damage to the cavity wall structure. Ensure the lintel is correctly oriented and fully seated in its mortar bed before commencing brickwork above. Check alignment with the cavity width to confirm proper support on both leaves.
- Use appropriate lifting equipment for safe handling
- Position lintel to span the full opening width
- Verify bearing on both inner and outer leaves
- Protect the lintel from damage during installation
Maintenance and durability
Steel lintels are durable when properly installed and protected. Ensure the lintel is fully bedded in mortar to protect it from moisture exposure. In renovation work, inspect existing lintels for corrosion or damage before installation of new components. The lintel should be protected from direct water penetration by proper cavity wall construction and maintenance of the external skin.
- Ensure complete mortar bedding for protection
- Maintain cavity wall integrity to prevent water ingress
- Inspect for damage during handling and installation
- Confirm lintel is not exposed to direct water penetration