Brick lasts a century. Mortar does not. In Florida, mortar takes a beating from driving rain, humidity, and heat cycling, and when it starts to fail, water gets in behind the brick. Catch it early and repointing is a straightforward repair. Ignore it and you are looking at brick replacement.
Here are the seven signs we look for on every estimate.
1. Mortar crumbles when you touch it
Run your finger along a mortar joint. If sand and grit come off on your skin, the mortar is deteriorating. Sound mortar feels hard and solid. This is the simplest test there is, and homeowners can do it themselves.
2. Visible gaps or recessed joints
Look at the joints between bricks. If the mortar has receded back from the face of the brick, leaving a visible channel, or if you can see actual gaps, water is already getting in. On Florida's wind-driven rain days, those gaps funnel water straight into the wall.
3. Cracking in stair-step patterns
Cracks that zigzag through mortar joints in a stair-step pattern usually mean movement: settlement, thermal expansion, or moisture cycling. Hairline cracks are worth watching. Cracks you can fit a coin into need a mason's eyes on them soon.
4. White staining on the brick face
That white powdery staining is efflorescence: mineral salts carried out of the masonry by water. A little is normal on new work. On older brick, heavy or recurring efflorescence means water is moving through the wall in ways it should not be, often through failed mortar.
5. Spalling brick faces
When the face of the brick starts flaking or popping off, water is getting in, freezing is not our problem in Florida, but saturation and salt crystallization do the same damage. Spalling means the problem has been going on a while. Repointing alone may not be enough at this stage, some bricks may need replacing too.
6. Damp spots on interior walls
If you have brick veneer and you are seeing damp spots or musty smells on interior walls after heavy rain, the exterior mortar has likely failed somewhere above. Water tracks down inside the wall cavity and shows up far from where it entered.
7. The mortar is harder than the brick
This one is specific to older Florida homes, pre-1940s brick, like the 1913 home we restored in Tampa. Old brick is soft. If a previous repair used modern hard Portland cement mortar, it is actually stronger than the brick, which forces moisture and movement into the brick faces instead of the joints. The fix is repointing with a softer, lime-based mortar matched to the age of the brick. This is specialist work, and it matters.
What repointing costs
In the Tampa Bay area, professional repointing typically runs $8 to $20 per square foot of wall area, depending on access, mortar type, and how deteriorated the joints are. A single chimney usually lands between $1,000 and $2,500. Full-house repointing on an older home runs $8,000 to $20,000+.
Historic lime-mortar repointing costs more because it is hand work with specific materials, but it is the only correct repair for old soft brick.
Why timing matters in Florida
Every rainy season that passes with failed mortar drives water deeper into the wall. What starts as a repointing job becomes a brick replacement job, which costs three to five times more. We see it constantly: the repair people put off for two years costs triple when they finally call.
The bottom line
Do the finger test on your mortar joints this weekend. If grit comes off, or you see any of the signs above, get a mason out before the next rainy season does more damage. We do free on-site evaluations across Tampa Bay and Citrus County, and we will tell you honestly whether you need repointing, spot repairs, or nothing at all. Call (813) 445-1233.
