Flat and low-slope roofing in Miami

Low-slope roofs are everywhere in Miami, on mid-century homes, on additions, on carports and on almost every commercial building in the county. They are also the least forgiving roof type there is, because water does not run off them, it makes its way off them, and any place it stops is a place that will eventually fail.

The failure points are predictable: seams, penetrations, terminations at walls, and drains. Add relentless UV and forty inches of rain a season concentrated into a few months, and small defects become active leaks faster here than in almost any other market.

Flat roof warning signs

• Standing water still present 48 hours after rain
• Split, open or lifting seams
• Blisters or bubbles in the membrane
• Cracked or failed sealant at pipe and curb penetrations
• Drains or scuppers that are blocked or set too high
• Membrane pulling away where it terminates against a wall
• Soft or spongy areas underfoot, meaning wet insulation below

What flat roof work involves

It starts with finding out whether the deck below is wet. Membrane can look serviceable while saturated insulation sits underneath it, and coating over that traps the water and accelerates the rot. Core samples or moisture scanning answer the question, and skipping that step is how a cheap job becomes an expensive one.

Repairs address seams, penetrations and terminations with materials compatible with the existing system. Mixing incompatible products is one of the more common causes of premature failure on low-slope roofs and it is entirely avoidable.

Replacement means tear-off, wet insulation removed, deck repaired, and a new system installed, usually TPO or modified bitumen in this market, with tapered insulation where drainage is the underlying problem. Coatings have a legitimate place on a sound roof with life left in it. They are not a fix for a wet or failing one, and should not be sold as one.