Are you looking for a contractor?

Submit our quick form and get quotes now!

Table of Contents

Roof

4 min read

How to Build a Rooftop Terrace

Roof

4 min read

How to Build a Rooftop Terrace

RoofHow to Build a Rooftop Terrace

Doesn't the idea of a rooftop terrace sound lovely? Of course it does and as a result, this project is becoming more and more common. This outdoor area can be turned into a pleasant and unique space for socializing and enjoying the sun.

However, before you launch this major renovation project, it's necessary to determine specific rules and techniques for the job. So look no further, as we've got some crucial information and a few tips on how to carry out your rooftop terrace project while keeping within a controlled budget.

Starting points for building a rooftop terrace

roof terrace

source: unsplash

The idea of a rooftop terrace is appealing for multiple reasons. Who doesn’t love the idea of enjoying a bit of sunshine with a drink in hand surrounded by family and friends? Of course, this project may be easier said than done. There are several considerations that need to take place before diving headfirst into this project. Ask yourself these questions:

  • Can your property roof and walls handle the weight of a terrace? This includes how it’s furnished, finished and with the weight of people on it.

  • Is a major reconstruction required? If your roof is slanted, major reconstruction will need to happen before you can build a terrace. Sloped roofs can be adjusted by building an external wall or cutting directly into the roof. If your roof is flat, the same needs and considerations will not be required.

  • Lastly, how do your neighbours feel about this project? In some municipalities, you may not be allowed to build a rooftop patio at all. If it is going to overlook their property, it will infringe on their privacy or could affect their skyline. Check with both your neighbours as well as local building codes to determine if you can move forward with this project in an amicable manner.

Do does the project require a transformation permit?

In many cities and municipalities, setting up a rooftop terrace requires a transformation permit. It is recommended that you contact your local authorities to know which permits are needed for your project and the rules that apply alongside the permit. For example, in Montreal, the terrace walls cannot exceed two meters in height. Further, the terrace needs to be placed a few meters away from the building façade. Lastly, the terrace must be set up at least 1.2 meters away from the property limits. These elements are of extreme importance and the failure to apply for the right permits can lead to legal recourse, so do your homework. 

How to determine the technical constraints to installing a rooftop terrace

It's highly recommended that you hire an architect for this type of endeavour, especially if it's going to come down to major roof reconstruction. An architect will calculate the load-bearing capacity of your roof and this will determine whether or not the rooftop terrace project is doable. For example, if you want to set up a garden on your roof, you will have to take into account the extra weight created by the wet soil, an aspect which might affect the size of the garden.

Respecting the weight limits will also affect the strategic choices concerning the materials that will be used for the staircase. Indeed, an aluminum staircase is much lighter than a steel staircase but it costs three times the price. As mentioned, be sure to consider the fact that you might have to turn your roof into a flat roof or that you might need to strengthen the current surface. There are a few cost-effective solutions, like pressure-treated wood posts which are installed on a styrofoam base.

rooftop terrace

Photo: Houzz

Budget for building a rooftop terrace

Investing in such a major renovation is not a trivial thing and serious consideration must be given to the budget of this project. To start, you should be aware that you'll likely spend upwards of at least $15 000 for this type of project. However, just think of the benefits! Your quality of life will improve, as the addition of a safe haven will make you feel like you’ve travelled outside of the city for a moment. If you have a limited budget, you will probably opt for a rooftop terrace made of wood.

With this type of setup, once the building’s structure has been modified, the next step will be to install a floor and a draining system. If your budget allows you to do so, you can opt for a rooftop terrace with white gravel, but if the building isn’t already equipped with a white membrane, one will have to be put in.

Ultimately, the most expensive rooftop terrace is the type that includes a membrane and layers of vegetable substrate. Building a terrace on your roof is not an easy thing to do but it is a worthy investment as this type of project adds a lot of value to a house and will be a great selling argument. 

Get 3 renovation quotes for your rooftop terrace project

RenoQuotes.com can help you get quotes for your rooftop terrace projectIf you submit your project to us, we’ll put you in contact with 3 qualified professionals. Fill in the form on our homepage (it only takes a few minutes), and you will receive quotes from trusted professionals. 

Dial 1-844 828-1588 to speak with one of our customer service representatives

Get 3 free quotes for your project!

Submit a project and get 3 free quotes!


Last modified 2023-11-07


Get 3 free quotes for your project!

Submit a project and get 3 free quotes!

Looking for something else?


Table of contents


Get 3 free quotes for your project!

Submit a project and get 3 free quotes!

Are you a contractor?

Join our network and receive real leads!

Download the price guide for renovations

We’ll be emailing you the latest market price guide for renovations.



Related articles

The latest industry news, interviews, technologies, and resources.

6 min read

RenoQuotes.com • 07 Nov 2023

5 Common Renovation Myths Cleared Up

Home renovations require time and energy for planning, preparing and executing. Leading up to your project, you’ll want to do some research about potential problems. Of course, there’s plenty of advice out there but as you’ll notice, a lot of it is contradictory.

5 min read

Cynthia Pigeon • 07 Nov 2023

Cost and Installation of a Heat Pump

Investing in purchasing and installing a heat pump is a wise decision. With the fluctuating temperatures in Quebec, it is not a bad idea to think about consolidating both heating and air conditioning systems into one unit and save nearly 20% of your usual energy bill.  

8 min read

N/A • 07 Nov 2023

How Does Asbestos Disposal Work?

Although asbestos is no longer permitted in the construction or renovation of current homes, it is still possible to find asbestos today in several old houses. The harmful effects of exposure to asbestos are no longer a secret, which is why asbestos removal is necessary for certain circumstances. But what is asbestos removal and when is it necessary?

4 min read

RenoQuotes.com • 07 Nov 2023

The Benefits and Uses of Recycled Concrete

Did you know that concrete could be recycled? Well, yes siree Bob! Concrete recycling is a technique used to salvage concrete waste. It’s an alternative to disposing of it in landfills that happens to be both cost-effective and eco-friendly. So, let’s zero in on concrete recycling, a practice that’s still, to this day, little known in Canada.

4 min read

RenoQuotes.com • 07 Nov 2023

How to Use Social Networks for Your Renovation Company

Social networks are one of the best marketing tools out there. Nowadays, using these platforms has become a must for any company looking to gain visibility.


Looking for a contractor?

Submit a project and get 3 free quotes now!