Wednesday, November 29, 2023
HomeFlatHow To Change A Flat Roof

How To Change A Flat Roof

How Long Does A Flat Roof Last

The 5 Steps of a Flat Roof Replacement.

A flat roof will normally last 20-25 years if the roof was built properly along with regularly scheduled maintenance.

If your flat roof leak repair are the result of age and material break down, it typically doesnt make sense to repair it, but its best to determine what type of roof you have and how long your roof lasts.

Usually these kinds of leaks start to show up around the 12 or 15 year mark on a well-made roof, so if you are experiencing leaks around this time it is perhaps best to look into the costs of replacing it altogether.

Whats more, if the initial installation wasnt performed properly, you may need to replace the roof sooner. Keep in mind that small leaks can be easily repaired, but large or multiple leaks may make replacing the roof entirely the best option.

The Cost Of A Remodel From Flat To Pitched

Of course, even if youre sold on the idea, there are substantial costs involved with any major roof work. The new roof itself can be expensive, but other contractors will also need to be involved, as a major roofing remodel involves more than just the roof. Siding will need to be extended up into the new eaves, and any existing chimneys or HVAC pipes will also need to be extended.

Evaluating the costs of a project like this can be difficult, as they can range significantly depending on region, season, and current costs of materials. However, our research indicates that as a very rough ballpark figure, you should be prepared to spend upwards of $30,000 for an average-sized residential structure.

Related: How to Fix a Leaky Flat Roof?

Building A Pitched Roof Over A Flat Roof

Flat roofs may look great but they bring with them several disadvantages for your home. For one, the low slope is not efficient for water drainage. Thus, flat roofs are more prone to water damage which leads to leaking, mold growth, sagging, and many other structural problems for your home. In order to prevent this, property owners need to maintain their homes more regularly. Regular maintenance includes coating your roof with waterproof coats and sealants. If not maintained consistently, homeowners will have to replace the roof sooner than expected.

With the weather in New Rochelle NY, flat roofs can become quite costly to maintain. This is why the option of converting a flat roof into a pitched roof is considered by many homeowners. You can also build over the old flat roof. However, this can have a few downsides. Any homeowner interested in building a pitched roof over a flat roof has many options if they approach the right roofing contractor, like On Time Roofing.

Recommended Reading: Can You Paint Galvalume Metal Roofing

How Much Does It Cost To Replace A Flat Roof

May 20, 2021 by Adrianne

While flat roofs are not as common as their slopped counterparts, there are still quite a few homes that use this style of roof. In this article, we look to shed some light on the approximate cost of fixing and replacing flat roofs. From the materials used to the kind of weather the flat roof is exposed to, there are several factors that impact the overall estimate.

On average, the cost of reinstalling a flat roof, including materials and labor ranges between $4 and $12. While that may be a fairly wide range, were taking into consideration an equally wide range of materials and even the brutal elements of the northeastern weather.

The right installation and materials could be the difference between a durable roof and one that will need frequent maintenance.

How To Use The Calculator

How Much Does Replacing a Flat Roof Cost?

1) Measure your house/building from corner to corner$1,000 or more2) Enter the exact number of large penetrations / curbs .3) Enter the length of parapet walls .4-6) Select insulation thickness, roof pitch, tear-off layers.Roof Pitch Calculator7) Select job complexityMediumComplex8) Select the material you want9) Select your region in the US.10.) Understanding your price estimate

20-40 years

Also Check: How To Install Thatch Roofing

Flat Roof Repair: A Guide On What To Do

by BarrettM | Aug 25, 2020 | Blog |

Dealing with a flat leaky roof can be extremely frustrating, not to mention that if things are not done properly, the leaky roof can be extremely detrimental to your propertys overall integrity and value.

While all roof leaks are problematic, a leak in a flat roof is particularly complicated.

Flat roof repair or commercial flat roof repair can range from somewhat simple to incredibly complex fixes or even reconstruction that involves complicated roof insurance claims and experienced professional support.

  • Cost to Repair Flat Roof vs. Flat Roof Replacement
  • How To Replace A Flat Roof

    wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 17 people, some anonymous, worked to edit and improve it over time.There are 14 references cited in this article, which can be found at the bottom of the page. This article has been viewed 325,596 times.Learn more…

    Although you don’t see it, your flat roof goes through a lot of wear and tear over time. Thankfully, these are probably the simplest roofs in terms of replacement jobs. After removing the old roof, you can install a new one with minimal effort using ethylene propylene diene monomer rubber. Even without roofing experience, this is something you can pull off with confidence!

    Read Also: Do It Yourself Metal Roofing Kits

    Structural Considerations When Changing Roof Structure

    There are a few ways to dealing with a pitched roof if you choose to convert to a flat roof. You can tear off the existing roof, remove the trusses, and strengthen the joists. This has to happen whether youre just removing the pitched roof or adding another floor with a flat roof.

    The home was built to certain specifications any major changes to the house that creates more weight need to be dealt with. Even adding a second-floor bathtub needs to be investigated to make sure the structure can handle the weight of the water.

    The same is true if you leave the existing roof and build a flat roof over the top. The framing, sheathing, siding, and even installation will add up to a lot more weight than originally permitted for. Changing the design of your home is a huge undertaking and you want to make sure you do it right.

    If not, you could be facing major issues down the road. A flat roof could really improve the curb appeal, but you dont want to jeopardize your home to do it. Make sure to use a high-quality contractor that will get the proper permitting. You may not be able to make the change at all without major construction.

    Have questions about changing a pitched roof to a flat roof, or even flat to pitched? Contact Warner Roofing and Construction. Since 1992, weve been helping Clark County make decisions about their roofing systems, both pitched and flat. Were familiar with all city and county codes and understand what works best in our four-season climate.

    What Is The Difference Between A Flat Roof And A Pitched Roof

    How to remove, repair and install a flat roof

    Flat roofing systems are more appealing to most homeowners because the roof doesnt cut into the interior space. They are installed in a sloping angle to prevent water from collecting on the rooftop. Pitched roofs on the other hand have sharper slopes that effectively divert and drain water from the building.

    You May Like Also

    Don’t Miss: How To Waterproof Concrete Roof Deck

    When To Replace A Flat Roof Roof Vs Repair

    If your flat roof is older than 15 years old it may be better to replace the roof. Especially if the repair costs are high. Most flat roofs in the DC area are done with TPO membranes these days. The life expectancy of a TPO roof is 15-25 years depending. The average cost to replace a flat roof in the DMV area is $15,000 for a 15 square roof. Just like it is not wise to do an expensive repair on an old car, the same is true of a roof. Repairs on aging flat roofs can be pricey. And maintenance costs get higher every year.

    Invest In Regular Flat Roof Inspections And Maintenance

    Previously, we wrote up a guide about the ways to care for your commercial roof. Do check that out. When it comes to keeping your flat roof in good shape, dont neglect regular inspections. A flat roofing contractor like us will be able to detect roofing issues in their early stages. Well list all the problems we find and give you a FREE ESTIMATE based on the roofing solution thats needed.

    Read Also: How Much To Install A New Roof

    Lay Down Felt And Secure To Roof

    Roll your felt out on the roof and cut it to fit with a utility knife. Roll the felt so that it overhangs the edge by 2 inches. Let it stand for about 30 minutes and then, using galvanized nails and your hammer, nail down the first layer.

    In terms of spacing, leave about 6 inches between nails along both of the short sides and the side lying next to the edge of the roof. As you secure the roof felt to the roof, make sure that it lies even and straight.

    One way to do this is by starting your nailing in the center and working out this allows you to pull the felt snug as needed.

    To Get Rid Of Ponding Water Problems

    Commercial Roofing Contractors in Boston, MA

    Flat roofing systems come with benefits and drawbacks. When it comes to the disadvantages, some property owners are being pestered by leaks. Unlike sloped roofs, flat roofs are susceptible to ponding water. Water that stays on a flat roof after it rains will weaken the material over time. Eventually, water penetrates the building.

    Flat roofs should have a minimum slope to allow water to run off. However, in some cases, building owners hire contractors that poorly designed the roof.

    Now you might be wondering why some flat roofs leak. One reason is that they have an inadequate pitch. Building owners who arent careful tend to hire roofing contractors that poorly design their roofs. Its also possible that they used subpar materials. We can see here that quality workmanship and materials matter.

    Also Check: Does Choice Home Warranty Cover Roof

    Disadvantages Of Pitched Roofing Systems And 3 Great Alternatives To Consider

    We already discussed the steps on how to make a flat roof have a pitch. Were going the opposite route this time. Why would you not proceed with this roofing project?

    A major drawback is that youll lack additional space for your rooftop equipment. Got HVAC units, water tanks, or solar panels? Think about where to place them this time. The second disadvantage is the cost. Know that this project is expensive and time-consuming. Ask yourself, is a pitched roof really worth the hassle?

    Having said these, Cox Roofing Systems recommends the following alternatives for Toronto ON building owners:

    Locating The Leak For A Flat Roof Leak Repair

    Discovering the source of a leak in a flat roof is usually easier than finding one on a sloped roof or a shingled roof. That said, roof leaks of any kind can be more complicated than they initially seem especially if youre an amateur trying to DIY roof repairs.

    There are many reasons for this, starting with the fact that the spot where you initially notice water entering your interior rooms might not actually be where the leak itself is, since water that penetrates the membrane of your roof can travel across the roof until it reaches a seam in the sheathing/roof deck, skylight or electrical, HVAC or plumbing penetration and then manages to drip or seep through to the inside.

    Nonetheless, there are steps you can definitely follow to determine the source of the leak , whether or not it is easy to find or readily evident when you first notice the water entering your interior.

    You May Like: Can Solar Panels Be Put On A Metal Roof

    Dont Panic Mr Mainwaring

    The first rule of flat roof ownership is dont panic! Pooling, in particular, is common on many flat roofs yet contrary to popular belief, its not the end of the world and can be easily addressed. Regular inspections and basic maintenance can help to resolve issues quickly.

    If the roof is easily accessible with ladders, then a quick visual check at the start and end of winter should identify any problems. Also a quick check after any particularly heavy rain at any time of year is a good idea.

    Adding slope to flat roof projects isnt always the major re-build that it might sound. The facelift approach is basically just that, removing the layers that comprise the flat roof and repairing part, or all, of the structure as necessary

    Dont Miss: Do I Need Plywood Under Metal Roof

    Advantages To Pitched Roofs Over Flat Roofs

    How To Replace A Flat Roof – Argyle Roofing Contractors
    • Pitched roofs last substantially longer in most climates.
    • Aesthetics are a real consideration here. People generally tend to prefer the style of a pitched roof, especially on residential structures. However, do take the architecture of your home into consideration: pitched roofs look very out of place on certain modern styles, for example.
    • Converting to a pitched roof can generate extra square footage for living space, if finished, or storage. This can come at the cost of extra outdoor space on the flat rooftop, depending on how your roof is set up.
    • Pitched roofs are resilient to most damage, although certainly repairs will still be needed from time to time.
    • One of flat roofs most persistent problems is leaking caused by standing water, which pitched roofs avoid entirely.

    Related: How Long Does a Flat Roof Last?

    Read Also: What Does A Roofing Contractor Do

    Potential For Lower Insurance Rates With A Flat Roof Instead Of A Sloped One

    A flat roof is less expensive than a sloped one because it has fewer corners, which are more difficult to seal.A flat roofcan also be installed with lower-cost materials that have the same durability as more costly ones. A sloped roof is an excellent choice for many homeowners because it provides better drainage and offers more space on the rooftop. However, installing this type of roof does come with some disadvantages such as higher installation costs and potential leaks in your homes ceiling if not installed correctly. Repairing a damaged solar panel system. Solar panels add value to your property while saving you money on electricity bills compared to standard electrical systems however, they do require maintenance over time like any other appliance or fixture within your home or business establishment. Damaged solar panels can be repaired if caught early before the damage spreads to other parts of the system. If you are considering installing solar panels, or have already done so and noticed something wrong with one of your panels, contact a professional H& R contractor to diagnose the problem.

    Also Check: What Does A Roofing Contractor Do

    Do You Need To Insulate The Garage

    Converting a garage into a family room is a popular choice for many people who require the extra space and are looking to increase the value of their home.

    If you are considering a conversion, a pitched roof may be a better option than a flat one as you can more easily insulate and ventilate it.

    Garages tend to be cold and have little to no insulation because a flat roof does not allow much space for insulation. A garage usually doesnt need insulation unless it becomes a habitable room at which point, the height of the roof will become important.

    The material you choose for insulation depends on the pitch of the roof you opt for. Aim for a good balance between ventilation and insulation if you are converting your garage into a room.

    Also Check:

    Don’t Miss: How Much Does It Cost To Pitch A Roof

    A Good Roofing Project

    Early in this post, we stated that replacing a flat roof with a pitched roof is one project to undertake if you have a solid reason for it. But just because you want to avoid a disadvantage of a flat roof, doesnt mean you can jump right in. First, consider all the ways to prevent these flat roofing issues.

    Here at J& M Roofing LLC, we recommend these proven and cost-effective solutions:

    How To Fix A Leaking Flat Roof

    Should I repitch my roof?

    Finding a leaking roof yourself from the inside of your property is possible, especially if it is a small leak.

    Start by measuring the distance from the spot where you can see the leak to the nearest two walls, and then use those measurements to locate the leak on the outside of the rooftop itself.

    Note that the majority of flat rooftops have a slight slope in order to allow for runoff, so you should start trying to locate the leak from the possible point of entrance on the roof, since the water will naturally run downhill.

    Of course, you should also start by looking for rips, punctures, worn spots, loose or popping screws, separations in the seams, or other issues with your flat roof membrane.

    If you dont find any obvious damage, youll want to check out the vent pipe boots, the caulk around the vents, flashing, and related structures for holes, damages, or other imperfections.

    If you do all of this and still cant locate any leaks, call in a professional flat roof contractor as soon as possible to find the leak and repair them.

    Having the materials and tools on how to repair a flat roof is also essential, youll need replacement materials and basic tools on hand at the very least so if that seems overly complex, call a professional to take care of your roof damage issues.

    You May Like: What Size Lumber For Roof Rafters


    Most Popular