InstaBidsWhat is a lintel?
A lintel is a horizontal structural support over an opening that carries the wall above it. For masonry veneer, Section R703.8.3 of the 2021 International Residential Code specifies at least 4 inches of bearing, the length resting on a support. Ask how a repair treats both the lintel and surrounding masonry.
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What this means for your home project
- From a safe viewing position, note visible cracking around the opening and photograph it for the repair discussion. Source: National Park Service, read 2026-11-05.
- For a masonry veneer proposal using 2021 IRC Section R703.8.3, request a drawing showing the bearing length at the lintel supports. (source)
- Request a written masonry-access scope naming the brick or stone units to be removed to expose the lintel; use that item when comparing bids. Source: University of Georgia, read 2026-11-05.
- Describe it onceBy chat, or through your own AI assistant, and add photos.
- Post it and send itContractors bid in writing on that scope.
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For your AI assistant
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- MCP connector URL
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https://instabids.ai/openapi.json - Start-request link
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What are the signs of a failing lintel?
Use NPS masonry guidance to discuss cracking around your opening and distinguish wood-lintel deterioration from metal-lintel deterioration (read 2026-11-05). “In older masonry walls with wood lintels, cracking will occur as the wood sags or decays.” (source) “Iron and steel lintels also cause cracking as they deflect or rust over time.” (source)
How much support does a lintel need?
Use the International Code Council’s 2021 IRC Section R703.8.3 to discuss bearing for masonry veneer lintels (read 2026-11-05). “The lintels shall have a length of bearing not less than 4 inches (102 mm).” (source)
Rusty lintel—time to replace?
For corrosion that pushes bricks out of alignment, use the National Park Service’s 1999 Fort Hancock repair example (read 2026-11-05). “The swelling that is caused by the corrosion jacks the bricks out of alignment, which then further breaks up mortar joints and allows more water to enter the wall cavity.” (source) “Where this has happened, it is often necessary to remove both the bricks and the corroded lintel.” (source)
What drives the cost of lintel replacement?
Use the University of Georgia’s historic-building repair example to specify masonry-access work in a lintel bid (read 2026-11-05). “Repair of lintels begins with removal of the overlying brick or stone units to expose the lintel.” (source)
Where should the flashing be at a lintel?
Brick Industry Association says (read 2026-11-05): “Even where galvanized or stainless steel angles are used for lintels in cavity and veneer walls, continuous flashing should be installed over the angle.” (source)
Sources
- Architectural glossary: lintel — New York City Landmarks Preservation Commission; read 2026-11-05.
- Common Problems with Brick Masonry — National Park Service; read 2026-11-05.
- 2021 International Residential Code, Section R703.8.3: masonry veneer lintels — International Code Council; published 2021; read 2026-11-05.
- Historic Preservation Master Plan: Repair of Corroding Lintels, page 133 — University of Georgia; published 2019-10; read 2026-11-05.
- Fort Hancock Rehabilitation Guidelines, March 1999: Lintel replacement, page 33 — National Park Service; published 1999-03; read 2026-11-05.
- Technical Notes 31B: Structural Steel Lintels, reissued May 1987 — Brick Industry Association; published 1987-05; read 2026-11-05.