Prices and materials for re-roofing
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When renovation work is no longer enough to keep your roof in perfect condition, re-roofing is essential.
In this case, you need to opt for a quality structure made of durable materials, installed by a specialist in the field. When it comes to budgeting, you need to take into account the prices and materials involved.
Here’s an overview.
Re-roofing: the different types of roofing
Shingle roof
Recent models contain only inorganic substances.
A wide variety of colors and styles are available.
Weight is an important criterion in determining the durability of shingle roofing.
This type of roofing generally lasts 15 to 20 years, but heavier models can last up to 30 years.
In all cases, it’s important to distinguish between asphalt shingle and wood shingle roofing.
If you’re planning to re-roof your asphalt shingle roof, it’s important to protect it from the sun’s rays, which can cause cracking.
That’s why it’s essential to position the gravel properly on the membrane.
On the other hand, your asphalt shingle roof is more resistant to moisture and doesn’t require much maintenance.
It does, however, require regular application of a coat of stain.
It is, however, more resistant.
Slate roof
Made of natural stone, it adds a touch of elegance to your home, and is frequently used for roof repairs in Montreal.
This type of covering has the advantage of being non-combustible and waterproof.
Re-roofing with slate tiles guarantees the longevity of your structure for up to 75 – 150 years.
These models are generally heavy and fragile, and require periodic maintenance.
When re-roofing with slate, always bear in mind its fragility, as it could break under human weight.
Sheet metal roofing
It can be corrugated or folded.
It’s easy to maintain.
Tinsmiths in Montreal generally prefer this type of roofing to shingles, because steel withstands snow better than asphalt.
What’s more, sheet metal is recyclable.
On the other hand, this model is less resistant to salt air corrosion and electrolysis.
You should also repaint it with a PVC-, polyester- or polyurethane-based stain to extend its life beyond half a century.
In terms of comfort, you should expect some noise when it rains.
Flat roof
This single- or multi-layer membrane coating can be made of asphalt or elastomers.
It is sometimes used to re-roof a house in an urban setting.
This type of roof can be made of wood, metal or concrete.
In all cases, the system must be perfectly watertight to prevent rainwater infiltration.
Elastomer roofing
Roof inspection in Montreal We sometimes recommend elastomer roofing for its high resistance to the elements.
What’s more, it can be installed at any time of year.
As its composition is asphalt, it cannot be recycled.
The repair of an elastomer roof must be entrusted to a specialist to avoid the risk of fire.
Green roof
If you’re planning to add a roof terrace, it’s best to cover your home with a green roof.
There are extensive models, without a garden, and intensive models, with a garden.
This means you can plant small plants on your intensive green roof.
Among other things, it leaves a good ecological footprint.
It is not only aesthetically pleasing, but also highly resistant to wind, moisture and snow.
With proper maintenance, green roofing can last up to 30 years.
Materials used for each type of roof
Asphalt or wood for shingle roofing
Shingle roofing contains either asphalt or wood.
Re-roofing with asphalt shingles guarantees your roof’s resistance to moisture.
However, they need to be replaced regularly to keep the roof in good condition.
What’s more, these materials are easy to install.
Wood shingles resemble floorboards, and are available in several species.
They are extra-permeable, but less recommended for fire prevention.
Smooth wood shingles should be repainted every 5 years, and rough shingles every 15 years.
Metal, aluminum or copper for sheet metal roofing
Roofing sheet is made of metal, aluminum or copper.
This material won’t rust when exposed to the elements, and lasts indefinitely with proper maintenance.
It also has the advantage of being recyclable.
In the case of aluminum sheet, even 100% recycling is possible.
This iron sheet can be thicker or thinner, and its tightness determines its quality.
As for color and flexibility, you’re free to choose from a multitude of models.
Sheet metal roofing is non-combustible and often quite light.
Gravel, TPO or EPDM for flat roofs
Multi-layer asphalt membrane or gravel materials can be used for a flat roof.
Liquid asphalt is mixed with felt and then covered with gravel.
This type of material is more resistant to the sun than tar, which was previously used for flat roofs.
However, it’s still possible for cracks to appear over time.
There’s also the flat roof made from vinyl-based polyolefin thermoplastics or TPO.
Other flat models contain synthetic rubber inside an ethylene-propylene-diene terpolymer or EPDM.
These materials are durable, lightweight and do not retain mold.
They are more resistant to all weather conditions.
Elastomer roofing
This type of roofing uses a material composed of modified bitumen double membrane.
Roofers prefer to install it because of its more uniform finish.
Elastomer can also be used as an underlay for asphalt shingles or as a flat roof covering, thanks to its long service life.
This material is also practical for re-roofing a garage.
Ecological material
Green roofs are made from low-maintenance, environmentally-friendly materials.
With this type of cladding, the house is naturally warmed and the roof’s insulation is increased tenfold.
So you’re protected from pollution and sometimes annoying outside noise.
Elastomer and green roofs
If you want to re-roof your garage, the price of the elastomeric membrane required ranges from around $8.50 to $14 per square foot.
The cost of re-roofing can easily exceed $20,000 for a surface exceeding 1,500 square feet.
A house with this type of coating would undoubtedly be original, but you’ll have to pay the price to enjoy it.
For a green roof, the estimated price of an extensive model is $15 to $25 per square foot, while an intensive model is offered at around $40 per square foot.
Note that the cost of installation involves several elements: installation of the membranes, the drainage and rain retention system, not to mention the plants.
The cost of re-roofing
Expenses include the price of the roof and the cost of repair labor.
A professional roofer can draw up an estimate after assessing the condition of the premises.
The cost of a shingle roof
A shingled roof costs around $3 to $5 per square foot.
The cost of re-roofing with asphalt shingles varies according to the surface to be covered and the complexity of the job.
For a typical bungalow with a pitched roof, you’ll need to budget between $4,000 and $6,000 to re-roof with asphalt shingles.
For a two-storey house, the cost is between $5,000 and $7,000.
And if you want to re-roof your prestige home, expect to pay between $9,000 and $17,500.
Budget for re-roofing with slate
The cost of re-roofing with slate is high.
Sellers offer a minimum of $22.5 per square foot, and prices can rise to around $40.
To re-roof with slate tiles, your budget ranges from $20,000 to $35,000 for a bungalow, $25,000 to $40,000 for a two-storey house and around $40,000 to $60,000 for an architect-designed house.
Sheet metal and flat roofs
Tin roofs cost between $12.5 and $15 per square foot, but are expensive to install.
The cost of re-roofing a bungalow is around $15,000 to $25,000.
For a two-storey house, it can be as much as $30,000.
For a house with a particular structure, re-roofing will cost between $30,000 and $60,000.
Flat roofing is very delicate to join, which explains the high cost of installation.
To this must be added the price of the roof, which ranges from $8 to $10 per square foot.
The cost of re-roofing a flat roof therefore depends on the surface area to be covered and the complexity of the job.
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