The best flat roofs don’t fall flat
Flat roof homes deliver clean modern lines and extra usable space for rooftop gardens or decks, making them stand out from traditional sloped designs.
Your flat roof needs more frequent maintenance because pooling water and shallow slopes increase leak risks, especially around low spots and seam connections.
You can extend your flat roof's life by inspecting the membrane regularly for punctures, clearing debris from drains, and addressing water pooling immediately.
Hiring a local flat roof repair professional provides reliable support with membrane repairs and leak detection, helping you avoid water damage inside your home.
A sloped roof is the standard for most homes. However, if you want a design that stands out from the crowd, it’s worth exploring the possibility of a flat roof. Advantages of a flat roof include energy efficiency, ease of maintenance, and pleasing aesthetics. Disadvantages of a flat roof include difficulty in shedding heavy rain and a shorter life span than sloped roofs. Learn more about flat roof pros and cons to see if it’s a smart design for your home.
A flat roof is any single-piece roof that has a slope with a slight incline of less than 10 degrees. Although flat roofs are common in commercial buildings, you can use them in a residential building, too, such as an adobe-style house or a modern home design. They’re even more frequently found on outbuildings and similar structures at the home, like a carport or shed.
A sloped roof is far more common than a flat roof in residential construction. In the flat roof versus sloped roof comparison, the sloped roof has one or more peaks. Slopes extend downward from the peaks, encouraging the movement of rainwater. Flat roofs have no peaks.
| Flat Roof Pros | Flat Roof Cons |
|---|---|
| Easy to maintain | Water may pool |
| Make a roof garden | Shorter life span |
| Energy efficient | Potential for leaks |
| Unique aesthetics | Membrane may puncture |
If you like the look that a flat roof provides, multiple advantages exist for this type of design.
One of the biggest advantages of a flat roof design is the ability to create extra usable space. You could add a garden atop the flat roof or a roof deck for gatherings. The flat roof is easy to access, and you can enjoy time sitting and relaxing in this space, which isn’t possible with a sloped roof.
Among the flat roofing materials you could use, some of them are environmentally friendly. The rubber membranes often consist of recycled rubber, for example. Ethylene Propylene Diene Monomer (EPDM) is an eco-friendly material that’s commonly used in flat roof construction, too.
This design is easier to maintain because you or a local flat roof repair company serviceperson can easily stand on the flat roof to make repairs or perform maintenance.
However, because this design can be prone to leaks, you may have to do more maintenance on it than other types of roofs.
Among the flat roof pros and cons is the lower cost of construction and repair for this design. Flat roofs simply don’t require as many materials as other roof designs, which saves money upfront.
However, because flat roofs don’t last as long as other types of roofs, you may have greater costs years down the road. A local flat roofing company can give you an idea of whether the flat roof is a good investment for your new home design.
A flat roof results in less attic space for the home than a peaked roof, which improves the overall energy efficiency of the home. Some membranes on a flat roof can reflect sunlight, keeping the home cooler.
As a non-traditional roof design for homes, the flat roof may not look quite as good on your particular home style as one of the sloped designs. Some of the other disadvantages of installing a flat roof include the following.
Among the most important flat roof pros and cons is the possibility of leaks. If your installer did not fully secure the membrane seams, you could end up with leaks inside the home.
Learning how to find a leak in a flat roof can be quite challenging, as water can run far from the source of the leak to where you notice the leak inside the home.
If you use bitumen on your flat roof, it may only last 10 to 20 years. If you use metal or rubber membranes, you could see up to a 30-year life span. Sloped roofs often last at least 30 years or longer.
Although shingles may fall off a sloped roof during a severe weather event, you still may avoid leaks if the rest of the roof decking materials remain intact. With a flat roof, if a flying object punctures the membrane, you’re likely to have leaks right away. Large hailstones or fallen branches could puncture the material.
People walking across the flat roof could step through a weak spot and cause punctures, too.
Because of the shallow slope of the flat roof, rain doesn’t move as efficiently to the gutters. If the flat roof has a low spot, water is likely to collect there. Pooling water could increase the chances of leaks. During winter time, ice dams will form in this low spot, which could damage the materials.
A sloped roof efficiently moves rainwater to the gutters. The sharper slope also reduces the effects of low spots.
Among roof types for homes, a flat roof is not as common as the several different kinds of sloped roofs. Some of the common sloped roof styles that you could select for a home include:
Gable
Dutch gable
Hip
Gambrel
A-frame
Mansard
Saltbox
If you want a flat roof, but you want more of a slope than the flat roof provides, the skillion roof is worth considering. Like the flat roof, it’s a single-piece roof, but it has a slope of greater than 10 degrees.
Mitchell and the crew were top tier i am so happy with my new roof
Home Genius ExteriorsD1 Roofing delivers outstanding service from beginning to end, backed by a strong warranty and expert teams. I highly recommend them for their excellence in meeting and surpassing expectations with unmatched communication. Choosing D1 Roofing was flawless decision
Division 1 Roofing LLCThis place took $25,000 for a flat roof job with a five-year warranty and never returned to fix the leaks that were caused by their work. These people are not professionals and should not be doing this type of work. They incorrectly changed the pitch of the roof, and caused more damage than...
The technician was very professional and friendly. He answered all my questions and was very thorough. He left the fireplace area very clean . He inspected from the roof and advised me as to other work that might need to be done. There was no pressure there. I was very satisfied with the...
Supreme brick & chimneyI am really impressed with their timeliness and turnaround. Mitchell came out, and we decided to move forward with their pricing. Our roof was on within a week, and we could not be happier with their team! Amazing company, great prices and honest, dependable craftsmanship. I highly recommend...
Window Depot USA of Central OhioManuel Calvillo is the best option in the area for roofing and you won't be disappointed.
They damaged multiple items on my property, including a marble slab used as a table top, tried to hide it, and refused to pay or replace. Arrived day one without a ladder to access roof & delayed a day. Left a mess in back yard; didn't wear face masks; no show by owner to property to see damages
Grants Tree ServiceI've hired Gary/Cherokee Roofing for two different homes, work quality, responsiveness, and completion have been great both times. And the prices quoted were very competitive. I would definitely hire again.
Lyle did a great job removing asbestos shingles from our front porch roof. They worked together with our roofer to make sure that the new roof was able to be installed on the same day that Lyle removed the asbestos shingles.
Lyle EnvironmentalBradley Builders did a good job replacing the roof on our front porch. They color-matched the existing shingles on the rest of the house and installed a metal ridge roll since we live in a historical neighborhood. They did the job while we were out of town. When we got back, everything was...
Bradley Builders, Inc.From average costs to expert advice, get all the answers you need to get your job done.
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