The Roof Replacement Process: All 12 Steps Explained

A roof replacement is not one event. It is twelve smaller events stacked in a specific order, each one setting up the next, and most of the anxiety homeowners feel about the process comes from not knowing what those twelve events actually are. Nobody hands you a syllabus before a five figure project shows up in your driveway. This guide is that syllabus: the free inspection and the estimate that follows it, material selection and the permit that has to clear before a shingle moves, delivery day and the protection setup that precedes any demolition, the tear off and the deck inspection it makes possible, the dry-in and shingle installation that follow, the flashing and ventilation detail work that separates a roof that lasts from one that does not, and the cleanup and final walkthrough that close the job out. This is the same order our own roof replacement crews follow on every job in Macomb County, and it is the order a fair contractor should be able to walk you through before you sign anything. Read it once before you sign, and keep it open during the job itself as a way to check that what is happening on your roof matches what should be happening.

01 / THE SHORT ANSWERThe 12 steps at a glance

Every legitimate roof replacement in Macomb County moves through the same twelve steps, whether the job is a simple ranch or a cut-up colonial with three dormers. The pace and the details change with the house; the order does not. Here is the full sequence, then the rest of this guide walks each one in the depth it deserves.

One thing worth saying before the play by play: on most single-family Macomb County homes, steps 5 through 12, meaning everything from delivery day through the final walkthrough, happen within one to three days. Steps 1 through 4 can take anywhere from a few days to a few weeks depending on permit turnaround and your own decision timeline. Our companion guide on how long a roof replacement takes breaks down what stretches that window on a specific house.

02 / BEFORE THE CREW ARRIVESSteps 1 through 4: inspection, estimate, materials, permit

Everything in this section happens before a single tool touches your roof, and it is where the job either gets set up to go smoothly or gets set up to go sideways. A homeowner who understands these four steps is in a strong position to compare quotes and catch a shortcut before it becomes a problem.

Step 1: The free on-site inspection

A real estimate starts with someone getting on the roof, not a number pulled from a satellite photo. Our inspection is $0 with no obligation and covers the shingle field, the flashing, the ventilation, the gutters, and the attic side of the deck, with photos of everything found. This is also the point where an honest contractor tells you if you actually need a repair instead of a full replacement; our roof repair page covers what that fork looks like in more detail.

Step 2: The written estimate

The estimate that follows the inspection should itemize the job: tear off and disposal, underlayment and ice barrier, the shingle system and its cost per square, flashing and ventilation work, the permit, and any decking allowance stated as a per-sheet price. A number without those line items is not an estimate, it is a guess with a signature line. If you are financing the project, this is also when to ask; as an illustration only, a $13,500 roof financed over 10 years at 9.9% APR works out to about $178 a month, subject to approval and your actual credit profile.

Step 3: Material selection

Most Macomb County homeowners choose architectural asphalt shingles, the middle tier that balances wind rating, appearance, and price, but this is the step where you also decide whether metal or tile makes more sense for how long you plan to own the house. Metal runs $18,000 to $30,000 installed and typically outlasts two or three asphalt roofs; tile and slate run $20,000 to $36,000 and carry their own structural considerations. If you are weighing the upgrade, our metal versus asphalt comparison walks the tradeoff in full.

Step 4: The permit

Reroofing anywhere in Macomb County requires a permit from your local municipal building department, and a licensed contractor pulls it, not you. Permit review timelines vary by city and by season, and this is frequently the single biggest variable in how soon work can start, more so than crew availability. A contractor who suggests skipping the permit to save time or money is suggesting you skip a code inspection on your own house; that is not a shortcut worth taking.

Timing matters more here than most homeowners expect. Roofing in southeast Michigan runs hardest from late spring through fall, and schedules fill fastest right after a storm event, when every homeowner on the block calls at once. Permit queues at municipal offices follow the same seasonal pattern. A homeowner who books the free inspection in the shoulder season, late winter or early spring, is usually choosing their own week on the schedule; a homeowner who calls in September is taking whatever week is left. None of the pricing on this page changes by season. Your leverage on scheduling does.

• Ask what the estimate itemizes: tear off, disposal, underlayment and ice barrier, shingle system, flashing, ventilation, and the permit should each appear as their own line, not folded into one lump sum.
• Ask who pulls the permit: it should be the licensed contractor, in their name, not a homeowner permit filed to save a fee.
• Ask what happens if the deck needs repair: you want a per-sheet price in writing before tear off day, not a number improvised on the spot.
• Ask what the workmanship warranty covers and for how long: materials carry their own manufacturer warranty separate from the labor that installed them.

03 / DELIVERY AND SETUPSteps 5 and 6: material delivery and protecting the property

Once the permit clears and materials are ordered, the job moves from paperwork to your driveway. These two steps usually happen the same morning the crew arrives, ahead of any demolition.

Step 5: Material delivery

Shingles, underlayment, ice and water barrier, and flashing materials typically arrive staged on your driveway or hoisted directly to the roof by conveyor, timed so the crew is not waiting around once tear off starts. A dumpster or trailer for debris usually arrives the same day or the day before, positioned to catch what comes off the roof rather than what has to be carried across the yard.

Step 6: Protecting the property

Before the first shingle comes off, a professional crew protects what is around the house, not just the house itself. Tarps go down over landscaping, walkways, and anything near the drip line; plywood often goes up against siding and windows in the fall zone; gutters get temporary protection so debris does not jam the downspouts. A debris chute is typically run from the eave into the dumpster below to keep shingle fragments off the lawn. Our full tear off process guide covers this setup step in more detail, including why it is not wasted time.

There is a homeowner side to this step too. Vehicles need to be clear of the driveway and any area under the roofline before the crew arrives, and pets are usually better off somewhere quiet, since tear off is loud from directly overhead in a way that surprises most dogs the first time they hear it. Patio furniture, grills, and anything fragile on a wall near the work zone are worth moving in advance, even though the crew protects what they can reach. Our preparation checklist covers this side of the job in full, with reasons attached to each item so it is clear what the crew handles and what is on you.

04 / TEAR OFF AND THE DECKSteps 7 and 8: stripping the old roof and repairing the deck

This is the part of the job most homeowners picture when they think about a roof replacement, and it is also the moment that decides whether the rest of the job goes cleanly.

Step 7: Tear off

Crews strip the old shingles, underlayment, and any old flashing down to bare wood decking, working in sections so no part of the roof sits exposed to weather longer than necessary. On a clear day with a full crew, an average residential roof can often be stripped and dried in within the same day; a roof carrying two layers of old shingles, which some older Macomb County homes still have from a budget reroof decades ago, takes longer and produces roughly double the debris. Our tear off guide narrates this step start to finish.

Step 8: Deck inspection and repair

Once a section is stripped, the crew walks the exposed deck board by board or sheet by sheet, checking for soft spots, delamination, and staining that signal a past leak. This is the one step of the whole process that a tear off makes possible and an overlay never does. Sound decking is left alone; anything compromised is cut out and replaced with new sheathing at a per-sheet price that should already be written into your estimate from step 2. A good crew photographs what it finds before billing for it, so a change order is documentation, not a surprise.

Finding some decking damage on a roof of any real age is normal, not a red flag by itself. Rotted or delaminated sheathing tends to cluster near valleys, eaves, and chimneys, anywhere a slow leak could have gone undetected for a season before it showed up as an interior stain. So do past patch jobs, missing underlayment, and chimney flashing that was never built correctly the first time. What separates a fair mid-job conversation from a bad one is not whether something turns up, it is whether you see photos of it, on your roof, before you see a price for fixing it.

05 / DRY-IN AND SHINGLESSteps 9 and 10: sealing the deck and installing the new roof

With the deck sound, the job turns from demolition to construction, and this is where the roof actually starts looking finished.

Step 9: Dry-in

Dry-in means covering the bare deck with underlayment and, at the eaves and valleys, a self-adhering ice and water barrier membrane. Michigan's climate zone requires this ice barrier by code, because our winters build ice dams at the eaves that push meltwater back under standard shingles; skipping or shorting this membrane is one of the more common corners a cut-rate crew cuts, and it is invisible once the shingles go down. A dried-in roof is weathertight even before a single shingle is installed, which is why crews push to reach this point before any rain moves in.

Step 10: Shingle installation

Shingles go on course by course, starting at the eave with a starter strip and working up to the ridge, nailed according to the manufacturer's pattern to hold the wind rating the product is rated for. This step is where crew size and experience show up most: a rushed nailing pattern or the wrong nail placement will not fail today, but it is exactly the kind of shortcut that shows up as lifted shingles after the first real wind event. Watching this step, or asking to see photos of it, is a fair thing to request.

06 / FLASHING AND VENTILATIONStep 11: the detail work that decides whether the roof actually holds

Flashing is the metal that seals every place the roof surface is interrupted: valleys, chimneys, skylights, sidewalls, and vent penetrations. Each one is done by hand, and each one is a place water actively tries to get in for the life of the roof. Step flashing gets woven into the shingle courses one piece at a time rather than run in one long strip; chimney counter-flashing gets cut into the masonry rather than smeared over with caulk; pipe boots get set and sealed fresh rather than reused from the old roof. This is the slowest, least visible part of the job from the ground, and it is also where most long-term leaks originate when it is done poorly.

Ventilation gets finished in this same step: ridge vents, soffit intake, and baffles that keep air moving from the eaves to the ridge across the underside of the deck. Proper ventilation keeps the deck cold and even through winter, which is what actually prevents ice dams, more than the ice barrier membrane alone. A roof installed over a starved attic ages faster from underneath than it does from the weather above, and a crew that skips ventilation upgrades to save an hour is trading your roof's lifespan for their schedule.

This step is also the slowest per square foot of roof, and it is where the price difference between two quotes on the same house most often actually lives. A quote that seems thousands cheaper for the same material and the same square footage is rarely cutting a corner on shingles, which are a fixed manufacturer cost either way. It is far more often cutting time out of the flashing and ventilation work, because that time is invisible to a homeowner standing in the driveway and it is the easiest place to quietly shave labor hours off a bid.

07 / CLEANUP AND THE WALKTHROUGHStep 12: closing the job out

The last step is the one that decides how the whole project feels in hindsight, even though it has nothing to do with whether the roof itself is any good.

Step 12: cleanup and the final walkthrough

A thorough crew removes the dumpster or trailer, hauls away leftover materials, and runs a magnetic sweep of the lawn, driveway, and landscaping beds to pick up stray roofing nails, more than once if needed. Gutters get checked and cleared of any debris that made it in during tear off. The final walkthrough should happen with someone from the crew present, walking the property with you, not a text that says the job is done. This is the point to ask any question you have been holding, and a written workmanship warranty should be part of what you leave with.

The roof is only half the job. A crew that leaves your yard exactly as they found it, minus the old roof, is telling you something about how they treated the parts of the job you could actually see.

If you are trying to judge a finished roof rather than a quote, our companion guide on how to inspect a new roof covers exactly what to look for during that final walkthrough, from nail lines to flashing details, before you sign off. And if you have not started the process yet, our checklist on preparing for replacement day covers what to do around the house before the crew shows up.

Every figure in this guide is the same published price canon on our honest pricing page, and it does not change once your project starts, because the twelve steps above are already priced into the estimate from step 2. If you want your own number instead of a range, the free inspection in step 1 is where every real quote in Macomb County actually begins, and the cost calculator gives you a ballpark using the same ranges on this page before anyone visits.