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How Much Is It To Replace A Flat Roof

Modified Bitumen Flat Roof

How Much Does It Cost to Replace a Flat Roof? ROOFING QUICK TIPS

A modified bitumen roof is made up of sheets that are composed of multiple layers, including bitumen or tar. They are generally heated with a blow torch when rolled out onto the roof, adhering them in one step. You will have more seams with this style of roof. However, they are fairly easy to install and durable once finished. They only last 10 to 15 years, so they are less common. This flat roofing material is known for its light hue that reflects heat. They cost between $4 and $8 per sq.ft.

Cost To Replace Asphalt Shingle Roof

Replacing an asphalt roof with new shingles will cost between $5,400 and $9,000, or an average of $7,211 for a 2,000 square foot home not including old roof removal. The actual cost will vary depending on whether it is a composite asphalt shingle roof or a fiber cement composite shingle installation.

Asphalt is the least expensive solution, with a cost to remove the previous asphalt roof and install a new one coming to $7,850 for a 1,500 square foot home, while the same project undertaken and installing concrete shingles instead of asphalt will cost $24,950.

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Cost To Install Flashing On Roof

If leaks are occurring around your chimney or skylights because of age or physical damage, the cost to install flashing on your roof ranges between $200 to $500 for each chimney or skylight. In the case of a roof being replaced, depending on the age and the condition of the original flashing, the roofer will either replace the flashing completely or reuse the original metal.

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Roof Replacement Cost By Location

Where you live can also determine the cost of your roof replacement. For instance, if you are located in an area that experiences regular, heavy snowfall, you may need additional underlayment or ice barriers to protect your roof.

If you live in a warmer climate, on the other hand, you may not be able to install materials like asphalt shingles, which will crack more easily from drastic temperatures.

In addition to the climate, your state or local jurisdiction may have certain requirements that affect the cost of your roof. There may be certain permits, materials, or installation methods needed to ensure that the roof replacement is up to code, all of which can change the price.

How Much Does A Flat Roof Cost In Ontario

How Much Does Replacing a Flat Roof Cost?

While shingle roofs are the most popular type of roofs in the Toronto and Mississauga area, flat roofs are also popular in both commercial buildings and residential homes. In recent years within the GTA, flat roofs have become trendy in the more contemporary building designs as it maximizes the available space for a property.

The most common flat roof system uses the Modified Bitumen System, a two-ply vulcanized system that is much stronger than the single-layer iron-on-system. So how much does it cost to replace a flat roof? Just like there are many different factors that impact the price of shingle roofs, there are also various factors that impact the price of flat roofs.

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Why People Opt For Flat Roof And Pitched Roof

A pitched roof has at least two slopes that rise to meet at a peak. Known for their long lifespan, their construction is designed to enable usable space in your buildings loft area, maximizing space and affording the type of flexibility that a flat roof simply cant match. Your property will benefit from added insulation and rooms will not be afflicted by extremes of temperature that can come with a flat roof installation.

Unfortunately, pitched roofs also come with a reasonable price tag their complex design and significant labor and material costs mean that pitched roofs are far more expensive than a roofing service near me.

A residential flat roof is basically a horizontal base fixed to the buildings ceiling joists and then covered with a waterproof membrane. To enable rainwater to drain from the roof, a flat roof is slightly pitched by just a couple of degrees.

Flat roofing is both economical and efficient, which saves the owner energy and money. Its construction involves considerably less labor and materials than its pitched roof counterpart and full replacement can often take just a day

Cost Of Flat Roof Repair

Leaks are the most common problem that most flat roof materials have. However, EPDM rubber is most notorious for leaking at the seams.

Properly installed PVC and TPO roofs should not have leaks, unless something causes a tear in the membrane that lets water in. Built up roofs often have leaks that are very hard to find and therefore repair, which is why these roofs are installed less and less.

Also, there are a lot fewer flat roofing pros that really know how to repair built up roofing in a way that actually eliminates the source of the leak.

Overall, repairing a simple leak in a single ply membrane requires patching and sealing the surface, and costs $300-500. Fixing up multiple leaks can cost $1,000-2,000+ depending on the scope of work.

For example, repairing leaks that happened around a chimney or a skylight, will be a lot more costly, because the roofer will need to spend time properly sealing the membrane around the penetration to ensure that the leak does not come back.

Therefore, its best to hire a seasoned flat roofing pro, who will take his time to properly seal the membrane. Otherwise, your leaks will simply come back after a few strong rains, or a big snow storm.

Regular maintenance and inspection is the best way to prevent leaks on a flat roof. Its easy to do a DIY inspection since you can safely walk on the surface of the roof.

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Roof Tile Replacement Cost

Roof tile replacement costs between $1,400 and $1,600 per square on average for concrete tile, Spanish tile, and clay tile. Tile roofing tends to weight a lot and will cost $1,000 more if your entire roof framing needs an upgrade to support the extra weight.

Clay Tile Roof Cost

Clay roof tiles are right up there with entry-level copper in regards to price, which averages around $1,500 per square. The average cost to install a new clay tile roof costs between $15,000 and $45,000 depending on your roof size.

Concrete Roof Tile Prices

Like clay tiles, concrete tiles also carry a $1,500 per square price, with the average installation costing $22,500 to $30,000. Depending on the current structural integrity of the roof framing, it is possible some repair or strengthening work will need to be done on the rafters to support the extra weight of these heavier products.

Spanish Tile Roof Cost

Spanish roof tiles generally have a little more design to them than entry-level clay or concrete, and you can expect to pay in the region of $1,500 to $1,600 per square for the install, and around $1,000 first if your entire roof framing needs work to support the added weight.

What Are The Advantages And Disadvantages Of A Flat Roof

Replacing a garage flat roof

Flat roofs are no longer just for commercial space. They have grown in popularity in recent years, and for good reason. Flat rooflines have a modern appeal that beautifully complements a wide variety of home designs.

Other benefits include:

  • Better energy efficiency than traditional pitched roofs, according to Energy Star

  • Much more versatile and easily transform into a rooftop patio or greenspace

  • Completely safe to walk on when properly sealed and treated

Flat roofs do come with their downsides, however. For starters, they do not work on every home design, and installation and repairs are difficult to DIY. Also, flat roofs are not ideal for homes in colder climates with heavy snowfall. The low-grade slope may slow drainage, leading to pools of water and ice dams during the winter months.

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Flat Roof Vs Pitched Roof Cost

Flat roofs are less expensive than pitched ones, averaging between $7,000 and $10,500 for a flat roof and $7,000 and $12,000 for a pitched roof. While the initial cost may be cheaper, it is important to keep in mind that they will often require more maintenance which could cost more in the long run. Flat roofs dont drain well, leading to leaking, clogging, and repairs in the future. Pitched roofs last longer and require less maintenance over time. Ultimately, the decision between pitched or flat roofing comes down to personal preference.

Type of Roof
$7,000 – $12,000

Have A Commercial Roof Repair Or Replacement Question Contact Us

A-to-Z Roofing & Exteriors is passionate about providing top-tier roofing services to customers throughout Colorado. Roofing and exteriors are all we do!

If youre looking for more information to help you make a decision about your existing roof situation, contact our team today. Well take the time to understand your needs, and well develop a list of options for you to choose from.

We want your commercial roof to provide you with decades of protection and security. To start a conversation about roof restoration, repair, or complete replacement, contact the team at A-to-Z Roofing & Exteriors, today.

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Flat Roof Drip Edge Repair Cost

Repairing flat roof drip edges ranges from $150 to $400. Drip edges are L-shaped metal pieces positioned at the edge of the roof. They can also be known as drip edge flashing and are used to divert water off the roof, away from any fascias, preventing it from pooling under the roofing materials. Metal drip edges are strong, but they become dented or damaged in storms or because of falling debris. So, they may occasionally require patching or cleaning.

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How Much Does A Roofer Cost

How Much Does It Cost To Replace A Flat Roof?

‘Again, the exact cost can vary based on a lot of different factors including your location, the type of job and any additional equipment that the roofer might need’, says Grossi. ‘However, a good basis to work from would be around £120 – £250 a day.

Getting the cheapest roofer isn’t necessarily wise. Grossi advises that it is ‘important is to check your roofer’s experience and qualifications to ensure quality work, limit the risk of damages and prevent costly repair work in the future.’ Ideally, your roofer should have ‘a BBA certification with a certificate from the British Board of Agreement.’

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How Long Will A Grp Flat Roof Last

Many tests and research have been carried out regarding the life expectancy of a GRP roof, and studies have estimated that they can last somewhere more than 50 years. This is proven because many glass fiber laminates, which were manufactured back in the 1940s, are still used today. Research has shown that GRP doesnt really deteriorate in fact, it has remained in the same condition throughout the testing periods that have been trialed. Some experts would even argue that GRP products applied by a specialist company could potentially last a lifetime.

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Replace A Leaking Extension Costs

The cost of replacing a flat roof on an extension is unfortunately higher. However, its worthwhile paying the extra cost if you dont think a patch job will work because the last thing you need is a flood every time it rains.

The average cost for a roof thats approximately 1.5m larger than a double garage roof should be between £975 and £1,500, with prices in London around £500 more.

Comparing Quotes Could Save You Up To 40%:

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Size Of The Flat Roof

Size matters. This is not only because of the material, but also the amount of labour required and the time needed to finish the project. As mentioned earlier, a felt roof could cost somewhere £40 to £70 per m2, and this means the total cost of the roof will depend on how large it is.

For instance, the price of installing a flat roof on the entire house would be significantly more than just doing the porch roof. Apart from materials, since larger roofs take more time, the labourers are likely to cost more money.

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How to install an EPDM Flat Rubber Roof, ClassicBond

So although it would be difficult to give you a price for your roofing needs right now, you can easily contact a roofer to come out to your home to give you an estimate.

Before you have them over, think about the expectations you have for your roof as well as any budget concerns and labor related questions you may have.

As a roofing company with 14 years of experience, we have serviced and replaced flat roofs for many satisfied customers, and we hope to offer that same service to you.

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Flat Roof Replacement Cost: Calculating The Cost Of Your Project

For flat roof options around 1,000 square feet, flat roof costs can be anywhere from $4,000 to $13,000, depending on a number of factors.

Material Costs

Heres a breakdown of the average cost of some of the most popular types of roofing materials per square foot:

  • Metal
  • Spray-Applied Coatings
  • Modified Bitumen

Flat Roof Construction & Designing Costs

Contractors charge somewhere around $3 to $7 per square foot for labor on average. This price includes both removal and disposal of the old roofing. If there are additional roofing layers that need to be installed, there may be an additional cost of $1 to $2 more per square foot.

Want a customized quote for your flat roof?Contact us today for a free consultation!

Weather And Wildlife Can Easily Ruin Your Flat Roof

Weather plays a key role in damaging/destroying all roofing systems including cedar and asphalt shingles. When specifically discussing flat roofs. Hail can easily puncture through the membrane and strong winds will pull up the layers. Completely leaving your home or commercial building exposed. Bigger storms will also blow debris around and displace equipment, causing different things to get thrown around in ways that will harm your flat roof system. Animals like squirrels, raccoons, birds, and even in some cases cats love to explore roof tops. Unfortunately, their sharp claws or nails will easily scratch and puncture the membrane. Causing you to find and call a roofer to repair your flat roof.

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How To Use The Calculator

1) Measure your house/building from corner to corner.

If there are overhangs, be sure to include these into the Dimensions field. 12 overhang over 100 foot eave span adds 100 sq. ft. to the total roof area, which can cost as much as $1,000 or more.

2) Enter the exact number of large penetrations / curbs .

Penetrations require special flashing work and will add significant cost for each unit. If you do not include them, you will see a huge discrepancy between this estimate and one from a contractor, because he WILL include these.

3) Enter the length of parapet walls .

The parapets can add significant roof surface and extra work, so do not discount them. Your roofer WILL charge you for these.

4-6) Select insulation thickness, roof pitch, tear-off layers. Use our easy Roof Pitch Calculator to estimate the pitch on your roof.

7) Select job complexity.

This can be vague, but if you have multiple penetrations, curbs, roof-to-wall flashing, difficult drainage, choose the Medium or even Complex setting. Also, be aware of ease of access to the roof. If your contractor needs to hire police detail, or if your roof is 7 stories off the ground, the cost WILL go up.

8) Select the material you want.

You can get a price for the chosen material, and then re-calculate again for a different one, to compare. EPDM rubber roofing is the most popular choice, because its the most budget-friendly option. TPO is the second most frequently installed flat roof on residential properties.

20-40 years

Can You Put Metal On A Flat Roof

How Much Does Replacing a Flat Roof Cost?

Metal works wonderfully on flat roofs that have a low pitch! Known for its durability, metal roofs are a green solution that can last several years and require very little maintenance. There are two types to consider for your flat metal roof: standing seam and MasterRib® or corrugated metal panels.

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Flat Roof Extension Cost

The price you will pay for a roof extension varies depending on the size. Flat roof pricing ranges from $1,000 to $20,000. A roof extension can be done for various reasons, such as adding a kitchen, bedroom, office, or updating your home. The advantages of building a roof extension outweigh the cons. Building this type of roof is an affordable way of extending your living space and increasing your homes curb appeal. There arent many disadvantages to extending your roof other than your ceilings are lower than a pitched roof extension.

Why Will Flat Roofs Leak

Sometimes improving drainage systems to get water off the roof faster, will solve the problem. Standing water on top of a roof is a major problem. The longer water is on your roof, the more likely it is to find somewhere to leak into your property.

What are the most common repairs for a flat roof. How much does the average repair to a flat roof cost?

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Removing A Flat Roof Cost

Removing a flat roof is usually done when it is about to be repaired, or a new one installed and is therefore usually added to the flat roof repair cost. That said, there are situations where removing the roof might be part of another project like converting the roof.

In this case, a professional will likely charge between £80 to £100 per m2. Once the removal is complete, disposal is the next problem, and while most companies will add it to the initial bill, some contractors will bill between £100 to £150 to get rid of the waste for you.


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