Roof Renovation Guide: Steps to Follow For Success

By Léa Plourde-Archer

Updated on August 11, 2026

Aerial drone view of a residential roof replacement job site with a crane and roofing contractors working.

For thousands of years, humans have understood the importance of protecting their homes with a roof. But what do we really know about modern roofing? Which materials should you choose, what roof shapes are best, and how can you plan a renovation project effectively? Whether you are considering a minor roof repair or a complete roof replacement, this guide will help you better understand the key steps involved in a roofing renovation.  

Before Starting Your Roof Renovation

A modern house with dark wood siding and white stone on the lower portion of the façade. It features a gable roof with integrated lighting beneath the eaves, a concrete staircase leading to the main entrance, and a garage visible on the right. The lawn is well maintained, and the sky is slightly overcast at dusk.

Source : Construction Julien Dallaire inc.

If you’re reading this guide, chances are you’ve already given some thought to renovating or replacing your roof. Before getting into the actual work, however, it’s important to properly plan your project and clearly define your goals. The number of factors involved in a roofing renovation project is often underestimated.

Of course, there are the materials installed on the roof surface, but you’ll also need to consider the shape and structure of the roof, flashing, soffits, gutters, insulation materials, vents, and many other components.

Key Considerations for a Roof Renovation

Durability

In an ideal world, a roof should have a very long lifespan. Depending on the material installed, a roof can remain in good condition for many years or even several decades. When repairing or replacing a roof, it’s therefore important to choose a durable material and make sure it’s installed according to industry standards.

Suitability

There is no shortage of roofing materials available on the market. However, rather than choosing based solely on appearance, it’s important to carefully consider the characteristics of each material. This will help you select a product that is suitable for the local climate, the homeowner’s maintenance capabilities, and, in some cases, municipal regulations.

What Questions Should You Ask When Planning a Roof Renovation?

If you’re undertaking a major roof renovation project, take the time to assess your needs so you can choose the right materials and design a roof that is well suited to your home. If you have limited knowledge of roofing, it’s strongly recommended that you speak with professionals early in the process, including experts in roofing, insulation, ventilation, soffits, and the other components involved in this type of project.

Here are a few factors to consider when planning your project:

  • Ease of maintenance;

  • Value for money;

  • Insulation performance; 

  • Ventilation;

  • Environmental impact. 

How Much Does a Roof Renovation Cost?

Unless you’re carrying out a minor repair, it’s almost impossible to complete a roofing construction or renovation project without making a significant financial investment. We’ll take a closer look at budgeting in another section of this guide.

First, you should have a general idea of how much you’re prepared to set aside for the project. You can consult our roofing price guide to determine whether your budget is realistic.

How Often Am I Able to Maintain the Roof?

Some roofing styles and materials require more maintenance than others. If you want to minimize the amount of upkeep you’ll need to fit into your schedule over the coming years, this is an important factor to consider when designing your new roof.

It’s also worth remembering that roof maintenance should always be carried out safely.

Does the Roof Really Need to Be Replaced?

In some cases, repairing the roof may be more cost-effective than replacing it entirely. To determine the best course of action, you should consult a roofing professional.

Here’s an article that can help you determine when it’s time to renovate your roof.  

Will the Entire Existing Roof Structure Need to Be Removed?

If part of the existing roof structure can be preserved, you may be able to reduce the overall cost of the project. However, if the entire structure needs to be replaced, you’ll need to account for the cost of removing it, as well as the expense of building a new roof structure.

Does Only One Section of the Roof Need Renovation?

In some cases, it may be possible to renovate or replace only one section of the roof. However, this option isn’t suitable for every type of roof structure or roofing material, so it’s important to discuss it with a professional roofer.

Will My New Roof Come With a Warranty?

Your new roof may be covered by one or more warranties. Some contractors offer warranties that cover certain repairs or replacements for a specified number of years.

Certain roofing materials may also come with manufacturer warranties. In these cases, you can find the specific terms, conditions, and eligibility requirements in the manufacturer’s official documentation.

To ensure that any warranty is valid and enforceable, always obtain official written proof of coverage. You should have access to written documentation outlining all applicable terms and conditions.

Will the Roofing Renovation Affect My Daily Life?

Some roof renovation projects can be completed fairly quickly. Contractors may only need a few days to complete the work, and the disruption to your daily routine may be minimal.

However, if the entire roof needs to be replaced, the project could take several days or even several weeks. In that situation, you may want to consider temporarily leaving your home while the work is underway.

Could the Renovation Improve My Home’s Insulation?

One of the roof’s main functions is to help keep your home properly insulated and well ventilated. If your home has insulation issues, a roofing renovation can be a good opportunity to improve its overall energy performance.

This could influence your choice of roofing material, the installation of soffits, the design of flashing, and even the overall roof structure.

Do I Want to Use Eco-Friendly Roofing Practices?

More and more homeowners are choosing to renovate their homes with environmental considerations in mind, whether through the materials they select or the installation methods they use. Talk to your roofing contractor and ask about the eco-friendly options currently available.

Do You Need a Permit for a Roof Renovation?

As with any renovation project, it’s important to make sure you have the appropriate building permit for the work you plan to carry out. Some projects require a permit, while others can be completed without one.

For roofing projects, whether or not a permit is required may depend on several factors, including:

  • The type of roof, including its structure, materials, and size;

  • The municipality where you live;

  • The construction or installation methods being used.

Contact your municipality to find out which requirements apply to your project. Your roofing contractor should also be able to provide guidance on local permit requirements.

Renovating Your Roof

House undergoing renovations with scaffolding surrounding the structure and workers on the roof installing plywood panels under a clear sky.

Source : Entrepreneur général F.T.S.C construction inc

Different Types of Roofs

There is a wide variety of roof styles. In general, however, the most common types include:

  • Flat roofs;

  • Sloped roofs;

  • Mansard roofs.

There are also rounded roofs, green roofs, and rooftop terraces. We’ll take a closer look at the latter two later in this article.

There are also several subcategories of roof structures, particularly when it comes to sloped roofs. A sloped roof can have one slope, two slopes, or multiple slopes. This is one of the most common roof styles, especially in small towns and suburban areas. In larger cities, flat roofs are much more common and are often covered with materials such as TPO, EPDM, or built-up roofing membranes.

To choose the roof style that best suits your home, you’ll need to consider several factors, including the size of the house, local weather conditions, your budget, and aesthetic preferences.

Would you like more information to help you make the right choice? Read our article Choosing Your Home’s Roof: Flat, Sloped, or Mansard.

Different Roofing Materials

In this section, we’ll introduce some of the most common roofing materials used in Canada.

Material

Characteristics

Price

Asphalt shingles

Affordable, easy to install, and widely used, but less resistant to harsh weather conditions.

$3–$9/sq. ft.

Metal roofing

Highly resistant and durable, offers good protection against snow, and is recyclable.

$4–$30/sq. ft.

Elastomeric membrane

Designed for flat roofs, water-resistant, low-maintenance, and typically requires professional installation.

$9.50–$15/sq. ft.

Wood shingles

Natural appearance and good insulation properties, but require regular maintenance.

$15–$25/sq. ft.

TPO or EPDM

Lightweight materials for flat roofs that resist mould, are recyclable, and can be suitable for green roofs.

$12–$16/sq. ft.

To learn more, read our article Which type of roofing material will best suit your home's needs? 

Rooftop Terraces and Green Roofs

More and more homeowners are choosing to make use of their flat roofs by creating functional outdoor spaces, whether by building a rooftop terrace or installing a garden. These types of projects can offer several benefits to homeowners who have access to their roof.

For example, a green roof is an eco-friendly option and can even be transformed into a garden where you grow your own vegetables. A rooftop terrace, meanwhile, can increase the amount of usable living space available around your home.

However, both are major projects that require careful planning. It’s essential to follow the proper steps to make sure the project is feasible, structurally appropriate, and within your budget.

Roof Components

Although the roofing material is the most visible part of a roof, the roof itself includes several other components that play an important role.  

Here are the main ones to know: 

Component

Characteristics

Flashing

Helps waterproof the roof by preventing water from entering through cracks, joints, or openings. It works alongside the roofing material to protect the structure.

Insulation

Prevents heat from escaping through the roof and is essential for maintaining the home’s energy efficiency.

Ventilation

Helps prevent problems related to moisture and indoor air quality. Poor roof ventilation can negatively affect the entire home.

Drip edge

An L-shaped metal component that directs water toward the gutter and prevents it from seeping beneath shingles or between the fascia and gutter.

Fascia

Supports the gutters and creates a protective barrier between the gutter, soffit, and house. It also helps protect the roof structure from the elements.

Soffits

Installed beneath the roof edge and often perforated to allow airflow. They play an essential role in roof and attic ventilation.

Gutters

Collect and redirect rainwater and melting snow to help prevent water infiltration around the roof and foundation. They require regular maintenance.

Eaves / Mansards / Dormers

Architectural features that are often decorative but can also serve functional purposes, influencing the appearance of the roof as well as ventilation or natural light in the space below.

Which Experts Should You Work With for a Roof Renovation?

Two roofers are installing shingles over an IKO Stormtite underlayment. They are wearing safety equipment and working near a large hedge of green trees, with a street and several cars visible in the background.

Source : LSCO

When people think about roof renovations, roofing contractors are usually the first professionals who come to mind. These contractors specialize in roof construction, repairs, and renovations. Some roofers also develop expertise in specific roofing materials or particular types of roof structures.

Depending on the scope of the project, you may also need to hire other professionals for work involving gutters, soffits, ventilation systems, insulation, and other roofing components.

As a result, you may end up working with several contractors throughout your project. To help you choose the right professionals, we’ll go over some of the key qualities and criteria to look for during the selection process.

Criteria for Choosing a Roofing Contractor

We’ve dedicated a full article to this topic, which we recommend consulting for more information. Here are the main points to keep in mind:

  • Make sure the contractor’s RBQ licence and permits are valid;

  • Verify that the contractor has valid insurance coverage;

  • Check whether the contractor has more experience working with certain roofing materials.

Most of these criteria can also apply to other types of contractors. This is especially useful since you may need to hire several professionals for your roofing project, including specialists in gutters, insulation, ventilation, and other related components.

Roofing Construction Standards

Together with your roofing contractor, you can make sure your renovation project complies with the construction standards set out in the building code, as well as any regulations established by your municipality.

When applying for your permit, take the opportunity to ask whether your municipality has specific roofing requirements or bylaws that apply to your project.

Practical Tips for a Roof Renovation

Large traditional-style house with a spacious paved driveway, a well-maintained landscaped garden, and a car parked in front of the garage under a sunny sky.

Source : Perfect View Landscaping

What Is the Best Time to Replace a Roof?

Spring and early fall are generally the best times to replace a roof in Quebec. Temperatures are more moderate, which makes roofing materials easier to install, and there is typically less risk of extreme heat or winter conditions.

What Financial Assistance Is Available for Roof Renovations in Quebec?

Depending on your situation, you may be eligible for programs such as Rénoclimat for energy-efficient renovations, as well as certain municipal grants that may apply to roofing work. It’s a good idea to review the provincial and municipal programs currently available before starting your project.

How Often Should You Replace Your Roof?

The recommended replacement interval depends on the type of roofing material:

  • Asphalt shingles: every 20 to 25 years;

  • Metal roofing: around every 50 years;

  • Elastomeric membrane for flat roofs: every 25 to 40 years;

  • Wood shingles: every 25 to 30 years;

  • TPO or EPDM: every 15 to 30 years.

Regular maintenance can help extend the lifespan of your roof and make it easier to identify signs of wear before they become more serious.

How Should You Maintain Your Roof?

Some roofing systems and materials require very little maintenance, while others need more regular attention. Roof maintenance may include:

  • Inspecting the roof regularly for damage or potential problems;

  • Cleaning the roof to prevent the buildup of water, debris, or snow;

  • Replacing damaged sections, such as missing or torn shingles.

Maintenance requirements vary depending on the type of roof, so it’s a good idea to discuss them with your roofing contractor and consult the manufacturer’s recommendations for your roofing material.

For certain types of roofs, annual snow removal may also be recommended as a preventive measure to reduce the risk of damage and help preserve the roof’s lifespan.


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