Roof types · Tile-to-Flat Transitions
Where Two Systems Meet
Many Gulf coast homes combine tile over the main roof with a low-slope section over a porch or addition. The junction is where they leak.
What you have noticed, the roof type and roughly its age. We will tell you honestly whether it is a repair or a replacement.
Repair
Partial repair is more often permitted than homeowners think
Tile
A tile roof is a different repair problem from shingle
Documented
Photographs and reports your insurer can actually use
Licensed
General contractor, licensed in the state of Florida
Two systems, one detail, frequently improvised
A tile roof and a membrane roof are different systems with different installers, and the transition between them belongs to neither. It is routinely detailed on site rather than designed, and it is the single most common leak location on this kind of roof.
The volume of water makes it worse. A large tile roof sheds everything it collects onto a comparatively small transition detail, so the junction handles far more water per square foot than either roof does. It is the highest-loaded detail on the building and typically the least designed.
Why the junction fails
- Two trades, with the detail belonging to neither.
- Water concentrated at the junction from a large tile area.
- Flashing improvised rather than detailed.
- Differential movement between the two systems.
- Previous repairs adding sealant rather than fixing the detail.
What a proper transition looks like
The membrane has to run up under the tile and its underlayment far enough that water shedding off the tile lands on the membrane rather than behind it. That means the tile at the junction is lifted, the flashing is set, and the tile is reset over it.
What it does not mean is a bead of sealant where the two surfaces meet. That is the repair almost every leaking transition has already had, usually more than once, and it is why the junction is still leaking.
How we handle it
- 01Treat the transition as a designed detail, not a site decision.
- 02Flash and terminate both systems properly at the junction.
- 03Allow for movement between the two.
- 04Water test the junction after repair.
- 05Document the detail for future work.
Water test the transition after repairing it. It is the most common leak location on a mixed roof, sealant-based repairs there fail routinely, and a hose is the only way to know before the next storm does.
Said plainly
Where we stop
A transition repaired with sealant alone will leak again. Where the detail is wrong, it gets rebuilt rather than sealed, and that costs more and lasts.
FAQ
Common questions
- Why do transitions leak?
- Two systems, two trades, and a detail that belongs to neither.
- Is sealant a repair?
- Not there. It fails routinely and the detail has to be rebuilt.
- Should it be water tested?
- After repair, before the next storm tests it for you.
- Is it common on Gulf coast homes?
- Very. Tile main roof over a low-slope porch is a common arrangement.
Local specifics
The Repair Rule
Florida amended its roof repair provisions in 2022. For roofs built to a sufficiently recent code edition, repairing part of a roof may no longer require replacing all of it.
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The Post-Storm Market
Major storms bring genuine capacity into a region and they also bring operators who leave once the work dries up.
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Insurance Documentation
What a homeowner can demonstrate matters as much as what happened, and the documentation is created at the assessment rather than afterwards.
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Gulf Exposure
The Gulf coast has its own exposure profile, and roofs here weather differently from those on the Atlantic side of the state.
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How We Work Here
We are based on the other coast, licensed in the state of Florida, and we work here on scheduled projects.
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More roof types
Concrete & Clay Tile
The dominant roof across much of Southwest Florida, and the one most often misjudged from the ground.
Read more →
Metal Roofing
Increasingly common on the Gulf coast, and it fails at the fasteners, the penetrations and the terminations rather than in the panel.
Read more →
Shingle Roofing
Common on newer residential construction, and the system where the repair-versus-replace argument arises most often.
Read more →
Next step
Find out what is actually wrong with it.
An inspection, photographs of what we found, and a written scope. If the honest answer is that it can wait another season, that is the answer you will get.