Lintel
Sheet under review by our engineersA lintel is a small horizontal reinforced concrete beam (sometimes wood or metal) placed above openings like doors and windows. Its role is to support the weight of the walls above these openings and distribute it to the sides.
Why it matters for your home
Without a lintel, the weight of the wall above a door or window would have no support, leading to inevitable cracks above the opening. A well-made lintel ensures the stability and durability of your openings and your home's facade.
The African context
We frequently see lintels that are too short (not extending far enough beyond the openings), insufficiently reinforced, or not reinforced at all. Sometimes, masons simply use a hollow concrete block filled with concrete as a 'lintel,' which is inadequate. This leads to classic V-shaped or cross-shaped cracks above windows and doors.
Red flags
- ⚠ No lintel is planned above doors and windows.
- ⚠ The lintel is too short, extending very little beyond the opening.
- ⚠ The lintel is made with a single rebar or no visible rebar.
- ⚠ Cracks appear above openings soon after construction.
Questions to ask
- 1. "How are the lintels for doors and windows designed?"
- 2. "What is the planned reinforcement (rebar) for the lintels?"
- 3. "How do you ensure the lintels are properly anchored in the wall?"
Cost hint (indicative)
The cost is included in the linear meter price for laying concrete blocks, or in the formwork and pouring of beams if it's a long lintel.
Related terms
At this stage of your project?
An independent DiasporaBuild inspector can verify on site before you pay.