Metal Roof Over Shingles (Retrofit) in Mobile, AL

Metal Roof Over Shingles (Retrofit) in Mobile: A Second Roof That Fits the First

A Metal Roof Over Shingles (Retrofit) in Mobile is the practical move for a lot of homeowners here: you keep the existing asphalt layer, we install new metal panels or shingles directly over it, and you skip the tear-off, the dumpster, and the disposal bill. On the low-pitched brick ranches across Hillcrest, West Mobile, Crichton and Toulminville, that existing shingle layer is usually 15 to 25 years old and starting to curl at the eaves. The house still sheds water, but the granules are gone and the next hurricane season is a question mark.

Mobile sits on flat, sandy-clay ground on the western shore of Mobile Bay, and the roof load here is less about snow and more about sun, salt air, and daily summer thunderstorms. A retrofit adds a metal skin that handles all three. We check the deck condition and the number of existing shingle layers before we quote, and we tell you straight when a tear-off is the better call. Start with our metal roof installation overview if you want the full picture of how a new metal roof goes on.

Why Retrofit Over Shingles Makes Sense on Mobile's Older Housing Stock

Most of the homes we see in Midtown, Spring Hill and Ashland Place are 1900s to 1930s Craftsman bungalows and brick Tudors with steep gables and deep porches. Their original roof structures were built for heavy shingle loads, and a metal retrofit adds only a fraction of the weight of a second shingle layer. That matters on a 100-year-old frame that has already been re-roofed twice.

Out in Semmes, Saraland, Tillmans Corner and Theodore, the 1990s to 2020s subdivision homes typically have simple gable roofs with a single shingle layer. Those are the cleanest retrofit candidates on the Gulf Coast. The failure mode that dominates in Mobile is not snow load. It is wind-driven rain pushing under lifted shingle tabs during a summer squall, plus UV baking the asphalt until it cracks.

• We keep the existing shingle layer in place, which cuts tear-off labor and landfill waste from the job.
• We install a metal panel or metal shingle system that sheds the heavy afternoon rain Mobile gets from June through September.
• We verify the deck and the number of shingle layers, because local code limits how many layers a roof can carry.
• We re-flash chimneys, valleys and penetrations so the new metal roof does not inherit the old roof's leak points.

If your shingles are still flat and the deck is sound, a retrofit is usually the lower-cost path to a metal roof that will outlast the house.

Key info: A 1950s brick ranch off Cottage Hill Road with one layer of 20-year shingles is a textbook retrofit. A 1920s Oakleigh Garden District cottage with three layers and soft deck boards is not, and we will tell you so before you sign anything.

Before you commit, check the roofing permit rules with the City of Mobile building department. Thresholds and inspection requirements vary by jurisdiction, and historic district review can restrict panel profile and color.

How We Install a Metal Roof Over Shingles in Mobile, Step by Step

We do not just lay panels on top of old shingles and call it done. The retrofit only works if the layer underneath is stable, the deck is solid, and the new metal is anchored into framing, not just into shingle. Here is the sequence we run on a typical Mobile job, from the first walk on the roof to the final sweep of the yard.

1. We inspect the existing shingles, count the layers, and probe the deck for soft spots at the eaves, valleys and chimney.
2. We confirm the permit requirements for the address and check any historic district or HOA design review that applies.
3. We install a slip sheet or underlayment over the existing shingles to separate the old surface from the new metal.
4. We fasten purlins or battens where the panel profile needs them, anchored into the rafters, not just the shingle.
5. We set the panels or metal shingles, then re-flash the chimney, skylights, valleys and pipe boots.
6. We walk the roof, check every fastener and seam, and clean the gutters and yard before we leave.

Every retrofit gets the same sequence, whether it is a single-story ranch in Prichard or a two-story home in Daphne. If your gutters are undersized for the new roof's runoff, we will flag that too, and you can read about gutters for metal roofs before the panels go on.

Key info: On a recent retrofit in Saraland, the homeowner had two shingle layers and a soft spot at the back valley. We replaced the decking in that section, installed the metal over the sound shingles, and the new roof has handled two hurricane seasons without a leak.

Retrofit Approaches We Use on Mobile Roofs

Not every roof takes the same metal system. The right choice depends on the roof pitch, the number of shingle layers, the look you want, and whether the house sits in a historic district. Here are the four approaches we install most often in Mobile and across the Eastern Shore.

We match the approach to the roof, not the other way around. If you are weighing standing seam against an exposed-fastener panel, our standing seam metal roofing page covers the trade-offs in detail.

Metal Roof Over Shingles (Retrofit) Cost in Mobile: What to Expect

Most retrofits in Mobile start at From $7/sq ft for an exposed-fastener panel over a single shingle layer. That figure covers the slip sheet, purlins, panels, fasteners and standard flashing. The price moves up from there based on the roof, not on the zip code.

Factors that move the number: the number of existing shingle layers (two layers mean more prep and a code check), roof pitch and complexity (a steep Victorian gable in Church Street East takes longer than a simple ranch), the panel system you choose (standing seam and stone-coated steel run higher than 5V-crimp), and whether the deck needs repair before we cover it.

• Access matters: a roof hemmed in by live oaks and a steep driveway in Spring Hill takes more setup than an open lot in Theodore.
• Flashing scope matters: chimneys, skylights and multiple valleys add labor and material.
• Historic district or HOA design review can add time and limit your panel and color choices.

Get two or three written estimates and compare scope line by line, not just the bottom number. Our full pricing overview breaks down what each system includes.

Metal Roof Over Shingles (Retrofit) Near Me: How to Vet a Contractor Near Mobile

You are going to hand a crew access to your roof and your home for several days. Vet them the way you would vet any trade. A licensed and insured roofer can show you a certificate of insurance on request, and you should ask for it before work starts, not after.

Ask for local references from jobs like yours, ideally a retrofit over shingles within the last two or three years. Ask who pulls the permit and who meets the inspector. If the house is in a historic district, ask whether the contractor has worked through design review before.

• Confirm the license and insurance in writing, and check that the policy covers roofing work in Alabama.
• Get at least three estimates and make sure each one lists the number of shingle layers, the deck condition, and the flashing scope.
• Ask for photos of past retrofits, especially the transition at the eaves and the chimney flashing.
• Ask how the contractor handles permit inspection and whether historic district or HOA approval is included in the scope.

When you are ready to talk through your roof, our contact page is the fastest way to get a free, no-obligation estimate. We will tell you whether a retrofit or a tear-off is the right call for your house.

Metal Roof Over Shingles (Retrofit) in Mobile: Pricing Guide

Indicative pricing, the exact cost depends on square footage, finish, and site access. Free personalized estimate within 24h at (251) 319-2788.