How to Remodel Roofing: A Complete Step-by-Step Guide
Short answer: To remodel roofing, you follow eight core steps: inspect the current roof, set a budget, choose your material, pull the required permits, tear off the old roof, repair the deck, install underlayment and flashing, and lay the new roofing. Most homeowners hire a licensed roofer for the actual work, because tear-off and installation are dangerous and governed by building code, while the planning, budgeting, and material choices are where you stay in control.
A roof remodel is not the same as a small repair. It usually means replacing the roof covering, and sometimes upgrading the material, improving ventilation, or changing the look of the roof. Done right, it protects the whole house for the next 25 to 50 years.
Here is the full process, what it costs, how long it takes, and where a professional is worth every dollar.
First, Know the Three Types of Roof Remodel
People use the word “remodel” to mean three different jobs. Knowing which one you need saves money and confusion.
| Type | What It Means | Best When |
|---|---|---|
| Full replacement (tear-off) | Remove everything, install new | Old roof worn out, most common |
| Overlay (re-roof) | New shingles over the old layer | Roof still sound, one layer only |
| Material upgrade | Switch to metal, tile, or premium | You want longer life or new look |
A full tear-off is the gold standard, because it lets the roofer inspect and fix the deck underneath. An overlay is cheaper and faster, but it hides problems and is not allowed in every situation. When in doubt, tear-off is the safer long-term choice.
The Roof Remodel Process, Step by Step
This is the heart of the guide. Every quality roof remodel follows these stages in order.
| Step | What Happens | Why It Matters |
|---|---|---|
| 1. Inspection | Roofer checks condition, measures | Sets the real scope and quote |
| 2. Budget and quotes | Get written estimates, plan cost | Avoids surprises mid-project |
| 3. Choose material | Pick covering, colour, accessories | Drives cost and lifespan |
| 4. Permits | Contractor pulls needed permits | Keeps the work legal and safe |
| 5. Tear-off | Remove old roofing to the deck | Reveals hidden damage |
| 6. Deck repair | Replace rotten or damaged wood | Solid base for the new roof |
| 7. Underlayment and flashing | Moisture barrier, ice and water shield, flashing | Stops leaks at the weak points |
| 8. New roofing and cleanup | Install covering, flash, clean site | The finished, protected roof |
One number worth remembering: around 90 percent of roof leaks start at the flashing, the metal that seals joints, chimneys, and valleys. A remodel is your one chance to get that flashing done right, so never let anyone reuse old flashing to save a few dollars.
Can You DIY a Roof Remodel?
Here is the honest answer most roofing sites avoid. Some parts you can do. The main work you should not.
| Task | DIY Friendly? | Notes |
|---|---|---|
| Researching materials | Yes | Learn your options first |
| Getting multiple quotes | Yes | Compare fairly, ask questions |
| Planning budget and timing | Yes | Pick a good season |
| Minor prep and cleanup | Sometimes | Protect landscaping, clear the yard |
| Tear-off | No | Heavy, dangerous, easy to damage deck |
| Deck repair | No | Structural, needs code knowledge |
| Installing shingles or flashing | No | Wrong nailing or flashing voids warranty |
The risk is not just falling, though that is real. A DIY roof that is nailed wrong, flashed poorly, or installed on a bad deck can fail in a few years and void the material warranty. The money saved on labour often turns into a much larger repair bill later. For a full remodel, a licensed roofer is the safe call.
Choosing Your Roofing Material
Material is the single biggest cost driver and decides how long your remodel lasts. Here is how the common options compare. Prices are approximate per square foot installed and vary by region, so treat them as a guide and get a local quote.
| Material | Approx. Cost per sq ft | Lifespan | Notes |
|---|---|---|---|
| 3-tab asphalt shingles | Lower end | 15 to 20 years | Budget option, weaker in wind |
| Architectural shingles | Mid range | 25 to 30 years | Best all-round for most homes |
| Metal roofing | Higher | 40 to 70 years | Great in snow and wind, long life |
| Wood shakes | Higher | 25 to 40 years | Natural look, more maintenance |
| Clay or concrete tile | Highest | 50+ years | Heavy, needs strong framing |
| Slate | Highest | 75+ years | Premium, needs reinforced structure |
For a cold, windy climate, architectural shingles or a proper metal system usually give the best balance of cost, durability, and snow performance. Cheaper 3-tab shingles save money up front but wear out and fail in wind far sooner.
What a Roof Remodel Costs
Cost depends on size, material, roof pitch, and how complex your roof is. A steep or multi-level roof with chimneys, skylights, and valleys costs more to remodel than a simple gable.
| Cost Factor | Effect on Price |
|---|---|
| Roof size (square footage) | Bigger roof, more material and labour |
| Material choice | Drives 40 to 60 percent of total cost |
| Roof pitch and complexity | Steep or cut-up roofs cost more |
| Tear-off and disposal | Removing old layers adds cost |
| Hidden deck damage | Rotten wood found during tear-off |
| Permits and inspection | Required, varies by municipality |
One planning tip from experienced roofers: set aside an extra 10 to 15 percent of your budget for surprises. Nearly a quarter of homeowners in recent surveys ended up paying for hidden damage found only after the old roof came off. Your roof surface is also usually 20 to 30 percent larger than your home’s floor area because of the pitch and overhangs, so budget on roof area, not house size.
How Long Does a Roof Remodel Take?
The install itself is fast. The planning around it takes longer, so start early.
| Phase | Typical Time |
|---|---|
| Inspection and quotes | A few days to a couple of weeks |
| Permits and scheduling | Days to weeks, varies locally |
| Asphalt shingle install | 1 to 3 days |
| Metal roof install | 2 to 5 days |
| Tile or slate install | 5 to 7 days or more |
Weather matters, especially in the north. A good contractor schedules around the forecast and avoids cold snaps that stop new shingles from sealing properly.
When Is It Time to Remodel Your Roof?
If you are not sure whether you need a remodel yet, watch for these signs. Several of them together usually mean it is time.
- Shingles curling, cracking, or missing across large areas
- Granules from the shingles collecting in the gutters
- Daylight visible through the roof boards in the attic
- Leaks or water stains that keep coming back
- The roof is past about 20 years old for asphalt
- Sagging areas, which can mean deck or structural trouble
A curling or bald patch here and there can sometimes be repaired. Widespread wear, repeated leaks, or any sag means a remodel is the smarter investment than patching year after year.
Cold-Climate Roof Remodel: What Northern Homeowners Should Know
This is where a local roofer earns their keep, and where generic guides fall short.
| Cold-Climate Factor | Why It Matters |
|---|---|
| Sealing time | Shingles need warmth to bond, hard in winter |
| Ice and water shield | Essential at eaves to stop ice dam leaks |
| Attic ventilation | Prevents ice dams and extends roof life |
| Snow load | Structure and material must handle heavy snow |
| Timing the work | Best in milder months for a proper seal |
On the prairies, wind and cold both test a roof. A remodel is the moment to add proper eave protection, balance the attic ventilation, and pick a material that sheds snow and resists uplift. Skipping these to save money is a false economy in a climate like Alberta or Saskatchewan.
Remodel Roofing
Do You Need a Permit to Remodel a Roof?
Usually, yes, for a full remodel. Rules vary by municipality, so confirm with your local building department before work starts.
| Project | Permit Usually Needed? |
|---|---|
| Simple re-shingle, same material | Sometimes not (maintenance) |
| Full tear-off and replacement | Often yes |
| Changing roof material or weight | Usually yes |
| Deck or structural repair | Yes |
| Changing roof shape or pitch | Yes |
A reputable contractor handles the permit for you and builds it into the quote. If a roofer suggests skipping the permit to save money, treat that as a warning sign.
Frequently Asked Questions
What does it mean to remodel a roof? A roof remodel usually means replacing the roof covering, and often upgrading the material, ventilation, or appearance at the same time. It is a larger job than a repair and is meant to protect the home for decades.
Can I put a new roof over the old one? Sometimes. An overlay is possible when the existing roof is still sound and there is only one layer. It is cheaper and faster, but it hides any problems underneath, so many roofers recommend a full tear-off instead.
How long does a roof remodel last? It depends on the material. Architectural shingles last about 25 to 30 years, metal 40 to 70 years, and tile or slate can last 50 years or more, as long as the installation is done correctly.
Should I remodel my roof in winter? It is possible, but not ideal. Shingles need warmth to seal, so cold-weather installs need extra care like hand-sealing. Milder months give a stronger, safer result in northern climates.
How do I choose a good roofing contractor? Get several written quotes, check that the contractor is licensed and insured, ask about workmanship warranties, and make sure permits are included. The cheapest quote is rarely the best value.
How much of my budget should be a safety margin? Set aside 10 to 15 percent for hidden damage, especially deck rot that only shows up once the old roof is removed. It is one of the most common surprise costs in a remodel.
Why Trust This Guide
This guide was prepared by the roofing team at Throne Roofing Inc., a licensed and insured roofing contractor serving Alberta and Saskatchewan. We remodel residential and commercial roofs across one of Canada’s toughest climates, handling everything from full tear-offs and deck repairs to metal upgrades and cold-weather sealing. Our crews work to building code and manufacturer standards on every project.
Planning a roof remodel, or not sure whether you need one yet? Reach out to Throne Roofing for a free, no-obligation inspection and a clear, written estimate.
