Metal Roof Over Shingles (Retrofit) in Des Moines, IA

Metal Roof Over Shingles (Retrofit) Des Moines

Metal Roof Over Shingles (Retrofit) in Des Moines: Skip the Tear-Off, Keep the Savings

A Metal Roof Over Shingles (Retrofit) in Des Moines installs a new metal roof directly over your existing asphalt shingles, so you avoid a full tear-off, cut landfill waste, and often save thousands on labor and disposal. This is a smart path for the 1950s to 1970s brick ranches and split-levels across Merle Hay, Highland Park, and the south side, where low-pitch roofs and a single layer of shingles make a retrofit practical. It also works on the 1920s bungalows in Beaverdale and Waterbury when the deck checks out solid underneath.

Des Moines sits where the Des Moines and Raccoon rivers meet, on flat to gently rolling glacial till under big maples, oaks, ash, and elms. Spring and summer bring large hail, tornadoes, and straight-line derecho winds, and winters pile on snow, ice dams, and freeze-thaw cycles. A metal roof over shingles gives you a hail-resistant, wind-rated surface without stripping the old roof first. We check the deck condition before we commit, and we tell you honestly when a tear-off is the better call. See our metal roof installation page for the full picture.

Why a Retrofit Makes Sense on Des Moines Roofs

Most Des Moines homes carry one layer of asphalt shingles, which is what makes a retrofit legal and practical under local code. The city's building stock is a mix of steep Victorian gables in Sherman Hill, low-pitch ranches on the south side, and 1990s to 2020s subdivision homes in West Des Moines and Ankeny. Each roof type reacts differently to a metal overlay, and the deck condition decides whether we can proceed.

You keep the existing shingles as a base layer, which saves on tear-off labor and dumpster fees.
We add a slip sheet or underlayment over the shingles to protect the new panels from abrasion.
A retrofit avoids exposing the interior to weather during a tear-off, which matters on occupied homes.
The new metal surface sheds hail and wind-driven rain better than aging three-tab shingles.
You reduce landfill waste, which keeps the job cleaner and often faster.

On a Beaverdale bungalow with a sound deck and one shingle layer, a retrofit can be the lowest-cost way to get a hail-rated roof. On a Sherman Hill Victorian with two layers or soft decking, we recommend a tear-off instead. Always confirm the layer limit with the local building department before you commit.

Key info: Polk County code limits how many existing shingle layers a retrofit can cover. We measure your layers during the inspection and tell you upfront if a tear-off is required. Check with the Des Moines Building Inspection Division for current thresholds.

How We Install a Metal Roof Over Shingles in Des Moines

We start with a deck check, because a retrofit is only as good as the wood underneath. We probe for soft spots, check the fascia and flashing, and confirm the shingle layer count. Then we set the underlayment, install the panels, and finish the edges and penetrations. On a low-pitch ranch in Highland Park, we often use a screw-down panel; on a steeper Colonial in Waterbury, a standing seam profile works better.

We inspect the deck and shingle layers, then document the condition with photos.
We install a slip sheet or underlayment over the existing shingles to prevent abrasion.
We set the eave trim and drip edge, then lay out the panel runs.
We fasten the panels with the correct screws and torque for the profile.
We flash the chimney, skylights, and valleys, then seal the ridge and closures.
We walk the roof, check the fasteners, and clean the gutters before we leave.

If your home is in a historic district or an HOA, we confirm the panel profile and color before we order material. For homes in the 50309 zip, see our Des Moines 50309 retrofit page for neighborhood-specific notes.

Key info: On a 1960s split-level in Urbandale with one layer of shingles and a solid deck, we completed a screw-down retrofit in two days. The homeowner avoided a tear-off and kept the interior dry the whole time.

Retrofit Approaches We Use in Des Moines

Not every panel profile suits every roof. The table below shows the main approaches we use on Des Moines homes and what each one is best for.

Approach	Description	Best for
Screw-down panel over shingles	Exposed-fastener ribbed panel laid over a slip sheet on the existing shingles.	Low-pitch ranches and split-levels on the south side and Merle Hay.
Standing seam over shingles	Concealed-fastener panels with raised seams, installed over underlayment.	Steeper Colonials and Tudors in Beaverdale and Waterbury.
Metal shingle over shingles	Stamped metal shingles that mimic the look of the original roof.	Historic-district homes in Sherman Hill and Capitol East.
Stone-coated steel over shingles	Granulated steel panels that look like shake or tile, laid over a slip sheet.	Subdivision homes in West Des Moines, Ankeny, and Waukee.
Partial retrofit with tear-off	We strip bad sections and retrofit the sound areas with new panels.	Older homes with one failing slope and a sound remainder.

We match the approach to the roof pitch, the deck condition, and the look you want, not to a one-size template.

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

Most Des Moines retrofits start around $7 per square foot for a basic screw-down panel over one shingle layer, and the number moves from there. A steeper roof, a complex hip-and-valley layout, or a standing seam profile pushes the price up. A simple gable ranch in Ankeny sits at the low end, while a cut-up Tudor in Waterbury sits higher. We measure the roof, count the layers, and check the deck before we quote.

Roof size and pitch drive the panel count and the labor hours.
The number of existing shingle layers affects the prep work and the code limit.
Panel profile and gauge change the material cost per square foot.
Chimneys, skylights, and valleys add flashing labor and detail time.
Access and landscaping protection add time on tight city lots.

Get two or three written estimates so you can compare scope, not just the bottom line. Our full pricing overview breaks down what each tier includes.

Metal Roof Over Shingles (Retrofit) Near Me: How to Hire a Contractor Near Des Moines

You want a contractor who will check the deck before selling you a retrofit, because a bad deck under a new metal roof will fail. Ask for proof of licensing and insurance, and confirm the policy covers roofing work in Iowa. Get at least two written estimates with the same scope so you can compare fairly, and ask for local references you can call. If your home is in a historic district or an HOA, confirm the panel profile and color are approved before you sign.

Request references from Des Moines jobs similar in age and roof type.
Confirm who pulls the permit and who pays for the inspection.
Get the layer count and deck condition in writing on the estimate.
Check HOA or historic district approval requirements in writing.

When you are ready to talk, reach out through our contact page and we will set up a free inspection.

Metal Roof Over Shingles (Retrofit) in Des Moines: Pricing Guide

Service	Price	Details
Screw-down panel over one shingle layer	Starting at $7/sq ft	Includes deck check, slip sheet, and basic flashing on a simple gable roof.
Standing seam over shingles	Starting at $11/sq ft	Concealed fasteners and raised seams, priced higher for steeper pitches and complex layouts.
Metal shingle or stone-coated steel retrofit	Starting at $9/sq ft	Includes underlayment and trim; historic-district profiles and colors can add cost.
Partial retrofit with tear-off	On estimate	We strip failing slopes and retrofit sound areas, so the scope needs an on-site look.
Travel	Included	In Des Moines and surrounding areas, no separate call-out or mileage fee.
Estimate	Free	Response within 24h at (515) 461-7188, no obligation to book.

Indicative pricing, the exact cost depends on square footage, finish, and site access. Free personalized estimate within 24h at (515) 461-7188.

Metal Roof Over Shingles (Retrofit): service areas

📍 Des Moines 📍 West Des Moines 📍 Ankeny 📍 Urbandale 📍 Johnston 📍 Clive 📍 Waukee 📍 Altoona 📍 Norwalk 📍 Grimes 📍 Indianola 📍 Windsor Heights 📍 Pleasant Hill 📍 Bondurant 📍 Ames 📍 Newton

Frequently asked questions: Metal Roof Over Shingles (Retrofit) in Des Moines

Can you install a metal roof over shingles in Des Moines?

Yes, as long as your roof has one layer of shingles and the deck is sound. Polk County code limits how many layers a retrofit can cover, so we count the layers during the inspection. On the 1950s and 1960s ranches across Merle Hay and the south side, one layer is common, which makes a retrofit practical. If we find two layers or soft decking, we tell you a tear-off is the better call.

How much does Metal Roof Over Shingles (Retrofit) cost in Des Moines?

Most retrofits start around $7 per square foot for a basic screw-down panel over one shingle layer. Standing seam and stone-coated steel run higher, and steep pitches, complex valleys, and chimney flashing add cost. A simple gable ranch in Ankeny sits near the low end, while a cut-up Tudor in Waterbury lands higher. We give you a written number after we measure the roof and check the deck.

Do you need to remove the old shingles before installing metal?

Not always. A retrofit lays the new metal over the existing shingles with a slip sheet between them, which saves tear-off labor and dumpster fees. We only skip the tear-off when the deck is solid and the layer count is within code. If the shingles are curling, the deck is soft, or there are two layers, we strip the roof first so the metal has a stable base.

How long does a metal roof over shingles job take in Des Moines?

A typical single-story ranch or bungalow takes two to three days once material is on site. A two-story Colonial or a roof with multiple valleys and dormers can run four to six days. Weather matters in spring and summer, when afternoon thunderstorms can stop work. We give you a realistic schedule after the inspection and keep you posted if weather shifts.

Do I need a permit for a metal roof over shingles in Des Moines?

Roofing permits are commonly required for a re-roof, and the thresholds vary by jurisdiction. Before any work starts, confirm the layer limit and inspection requirements with the local building department. We pull the permit and schedule the inspection as part of the job. If your home is in a historic district or an HOA, confirm the panel profile and color are approved first.

What is the difference between a metal roof retrofit and a full replacement?

A retrofit installs metal directly over the existing shingles, so there is no tear-off and less waste. A full replacement strips the old roof down to the deck, repairs any bad wood, and starts fresh. A retrofit is usually cheaper and faster, but it only works when the deck is sound and the layer count is within code. A replacement is the right call when the deck is soft or there are multiple layers.

What is the best time of year for a metal roof over shingles in Des Moines?

Late spring through early fall is the busiest window because the weather is predictable and the panels seal cleanly. Summer thunderstorms and derecho winds can interrupt the schedule, so we watch the radar and plan around them. Late fall and winter work is possible on milder days, but ice dams and snow load make the roof slower and less safe to walk. The dominant failure mode here is hail and wind damage from spring and summer storms, so many homeowners book right after a storm.

Do you handle emergency metal roof over shingles work in Des Moines?

Yes. If a storm opens your roof or a panel lifts, call (515) 461-7188 and we will get out to tarp or secure the area, usually the same day. A full retrofit is scheduled work, not an emergency job, but we can stop active leaks and protect the deck until the install date. We document the damage with photos if you plan to file an insurance claim.

Is the estimate really free and no-obligation?

Yes. We inspect the roof, count the shingle layers, check the deck, and measure the roof at no cost. You get a written estimate with the scope and the price, and you are under no obligation to book. If a tear-off is the better call, we tell you that too, even if it means a different job than you expected.

Are you licensed and insured for metal roof over shingles work in Des Moines?

Yes. Ask any contractor you interview for the same proof before you sign.