Correct corroded and failing lintels causing horizontal cracks above doors and windows — professional masonry repair throughout Fort Worth and Tarrant County
A horizontal crack running along the mortar joint directly above a door or window is one of the most recognizable — and most commonly misdiagnosed — problems in Fort Worth masonry. Homeowners and general contractors frequently patch the visible cracking without identifying the structural cause: a corroding steel lintel expanding inside the wall. Fort Worth Brick Repair diagnoses and corrects the source before any masonry repair begins.
Lintels are the horizontal structural members spanning door and window openings that carry the weight of the brick courses above them. In Fort Worth homes built from the 1950s through the 1990s, the majority of lintels are standard steel angles — L-shaped steel profiles embedded in the wall. These steel angles are exposed to moisture from Fort Worth's rain, humidity, and clay soil vapor. As they rust, they expand. The expanding steel cracks the mortar joint directly above and, if left long enough, causes the brick courses above the opening to crack and displace.
The crack-above-opening pattern is particularly common in Fort Worth because the clay soil keeps surrounding masonry at elevated moisture levels year-round. Steel angles that might last 50 years in a dry climate corrode significantly faster in Tarrant County's environment.


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Steel lintels corrode when exposed to sustained moisture. Fort Worth's environment provides that moisture in multiple ways. The region's expansive clay soil retains water after rain and releases it slowly as vapor — keeping the base of masonry walls at elevated humidity even during dry periods. North Texas receives an average of 37 inches of rain annually, with significant portions falling in intense spring and fall events that saturate masonry before it can dry.
Lintels in Fort Worth homes are particularly vulnerable at the bearing ends — the points where the steel angle rests on the brick at each side of the opening. Moisture wicks into these masonry contacts through capillary action, and the steel at these points corrodes from the inside out. By the time rust staining appears on the exterior brick face, the lintel has typically been corroding for years and has already begun to expand and crack the surrounding masonry.
The clay soil movement that defines Fort Worth masonry problems also stresses lintels. As foundation movement shifts the brick courses above an opening, the lintel is loaded in bending — a stress that steel angles are designed to carry but that accelerates fatigue cracking in already-corroded profiles. Homes that have experienced foundation settlement in Fort Worth frequently show lintel distress at multiple openings simultaneously.
Lintel replacement for a standard window or door opening — including brick removal above the lintel, temporary shoring, new galvanized lintel installation, brick reinstallation with matching mortar, and repointing of surrounding affected joints — runs $600 to $1,500 per opening.
Wider openings, openings requiring more extensive surrounding brick replacement, or openings on homes with discontinued brick that requires sourcing from salvage suppliers run $1,500 to $3,500 per opening. Historic Fort Worth properties with stone or cast-iron lintels requiring careful documentation and period-compatible replacements are priced individually based on scope.
$600–$1,500
Single window or door opening, standard modular brick, includes brick removal, new lintel, reinstallation and repointing
$1,500–$3,500
Wide spans, extensive surrounding brick replacement, discontinued brick sourcing, or historic property requirements
A lintel is the horizontal structural member — typically a steel angle, concrete beam, or stone slab — that spans a door or window opening and carries the weight of the masonry above it. When a steel lintel corrodes, it expands as it rusts, cracking the mortar and bricks above the opening in a characteristic horizontal or stepped crack pattern. Concrete lintels can crack from foundation movement or rebar corrosion. Replacing a failed lintel stops the progressive cracking and structural loading that would otherwise spread to the surrounding masonry.
The most reliable sign is a horizontal crack running along the mortar joint directly above a door or window opening, often accompanied by stair-step cracks extending outward from the top corners. Visible rust staining on the brick face below the lintel, bricks that protrude slightly above the opening, or a door or window that has become difficult to open and close are also reliable indicators. In Fort Worth, lintel corrosion is accelerated by the region's humidity and clay soil moisture cycling.
Lintel replacement for a standard window or door opening runs $600 to $1,500 including brick removal above the opening, lintel installation, repointing, and brick replacement. Complex openings, wide spans, or those requiring significant surrounding brick replacement run $1,500 to $3,500. Fort Worth Brick Repair provides free on-site estimates — call 817-440-3050.
Yes. A failed lintel that is left unaddressed causes progressive cracking in the masonry above the opening. Over time, without the lintel's structural support, the masonry can begin to collapse inward toward the opening. The longer a failed lintel goes without replacement, the larger the area of surrounding masonry that requires reconstruction — significantly increasing the total repair cost.
Brick replacement above and around lintel openings as part of a complete repair scope
Complete mortar joint restoration following lintel replacement for a fully restored wall surface
Repair stair-step and horizontal cracks caused by lintel failure and foundation movement
Period-appropriate lintel repair and masonry restoration for Fort Worth's historic neighborhoods
Structural chimney repairs including lintel and opening assessment for Fort Worth homes
Seamless color-matched repointing after lintel replacement so repairs are invisible against existing masonry
Fort Worth Brick Repair provides lintel replacement throughout Fort Worth and all surrounding communities including Arlington, Burleson, Crowley, Keller, Mansfield, Denton, Benbrook, White Settlement, and Weatherford.
No obligation — we come to you, assess the damage, and give you an honest quote.
Free on-site lintel inspection and estimate — we diagnose the cause before any repair begins.
Request Free Estimate