Roofing in Mobile
One of the wettest cities in the country, with housing that runs from the 1850s to last year. The roof advice changes enormously across it.
Rain is the everyday problem
Mobile is one of the rainiest cities in the United States, and the number that matters is not the annual total but how it arrives: in hard, warm, heavy bursts, often with wind behind them. A roof detail that would survive a lifetime of drizzle somewhere else gets tested here dozens of times a year.
What that punishes is the same short list every time. Valleys, because that is where the volume is. Penetrations, because the seal around them is the weakest thing on the roof. Wall junctions, where step flashing either was or was not woven in properly. And anywhere the roof meets something the original builder treated as an afterthought.
It also punishes attics. Warm wet air that cannot get out condenses on the underside of the deck, and people find it and assume the roof is leaking when the water is coming from inside the house. Anybody diagnosing a stain in Mobile should be asking about ventilation before they start looking for a hole.
Three housing stocks in one city
Downtown and the neighborhoods around it, the houses are old. Heart pine framing, board sheathing rather than plywood, roofs that have been replaced repeatedly over a century, and sometimes a historic district with a say in what goes back on. Approval there is a separate step from the permit and it takes time, so it belongs at the start of the conversation.
Midtown and the older suburbs are mostly mid century with plywood decking, simple gable and hip forms and roofs that have been replaced once or twice. This is the straightforward part of the city to work on and the quotes are the easiest to compare.
West Mobile is newer, larger and more complicated in shape, with more valleys, more dormers and more penetrations per square foot of roof. More complexity means more places to leak and a higher price for the same square footage, and it is worth knowing that a quote there is not comparable to one for a simple ranch in Midtown.
Before you sign, locally
The state license applies here as everywhere in Alabama and practically any full roof in this city clears the ten thousand dollar threshold, so ask for the number and look it up. Ask whether the quote allows for plank decking if the house is old. And if you are in a district, ask who is handling the approval.
Whether to do the work to the FORTIFIED standard is a bigger question in Mobile than in most places, because the wind discount and the grant are both real here, and the roof is coming off anyway.
Questions people ask
- My house is in a historic district. What changes?
- The material and often the color have to be approved before the work starts, and the approval is a separate process from the building permit. Start it early. A contractor who has worked the districts will know the route, and one who has not will treat it as a surprise halfway through.
- What is plank decking and why does it matter?
- Older houses here were sheathed with boards laid with gaps rather than with sheets of plywood. Modern fasteners and some modern underlayments behave differently over gaps, and sometimes the answer is to sheet over the planks. It is a real cost and it should be discussed before the job, not discovered during it.
Last checked 2026-09-24.