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How much does Flat Roofing Installation cost?

Average Price
$2,000 - $7,000

What is the price of Flat Roofing Installation?

Are you considering having a flat roof installed on your property? Read our handy guide to find out how much you can expect to pay for flat roofing installation in Canada.

What is Flat Roofing Installation?

You may be looking for a replacement roof for your home or garage, or perhaps a new roof for your extension. Whatever you’re planning, a flat roof is often seen as an appealing option.

Flat roofs are a popular choice amongst both builders and renovators thanks to their low price point when compared to other types of roofs. By hiring a professional roofer, you can rest assured that your flat roof is properly installed, reducing the chance of problems occurring.

We’re going to let you into a secret about flat roofs. Contrary to popular belief, a flat roof should never be completely flat. Flat roofs should always be slightly angled to allow rainwater to escape into gutters or outlets and to avoid pooling. This will give your flat roof the best possible chance of achieving a long life.

How much does Flat Roofing Installation cost?

You can ensure your flat roof is installed to the highest standard by hiring a professional roofer. But how much can you expect to pay for flat roofing installation in Canada?

The price you will be quoted for flat roofing installation will depend on the size of the area that needs roofing and your location. Although there is no fixed rate for installing a flat roof, a breakdown of average costs for flat roofing installation is given below.

Average cost of Flat Roof Installation
Average cost$4,000
Minimum cost$2,000
Maximum cost$7,000

What changes the price of Flat Roofing Installation?  

Many different factors will impact the price of flat roofing installation including:

  • Roof size

  • Specification

  • Location

Roof size

The size of the roof you require will directly impact the cost of installing a flat roof on your property. For example, a flat roof for a single garage could cost $2,000 whilst a flat roof for a three-bedroom house might cost $7,000. In general, the bigger the roof you require, the higher the price of flat roofing installation will be.


The specification that you choose for your flat roof will dictate its cost. For example, you’ll have the option to specify the thickness and type of both the roofing membrane and the insulation. Certain options will come with a higher price tag, based on their cost and quality, whilst others will be cheaper.


Your location will also influence the cost of flat roofing installation. The price of hiring a roofer varies between different provinces and territories. Prices are also typically higher in cities such as Vancouver, Toronto and Montreal whilst prices in more rural areas may be lower than the average. However, the prices quoted should still fall within the average price range.

How to reduce the cost of Flat Roofing Installation

If you’re working to a strict budget, there are a few ways that you can reduce the price of flat roofing installation.

  • Your roofer will provide you with various options for the type and thickness of roofing membrane. Generally speaking, the thicker the membrane, the longer it will last. This membrane often comes with a warranty. You can reduce the price of your flat roofing installation by choosing to go without the warranty, or opt for a shorter warranty.

  • If you’re replacing an existing flat roof that is old or damaged, one of the easiest ways to minimize your costs is to recover the existing flat roof. This will speed up installation whilst reducing labour costs and minimizing disruption.

  • You’ll also need to consider how much insulation you’d like on your roof. You can improve the effectiveness of your insulation by opting for two thinner layers of roof insulation instead of one thicker layer. This will improve the R-value performance along with reducing air leakage. This will help you to keep the costs down as you can get the same performance with less insulation.

You’re looking to hire a roofer to install a flat roof on your property, but where do you start? We’re here to help. When you search for a roofer on Bark, you can browse the profiles of companies that meet your requirements and read reviews from genuine clients before requesting a quote. 

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