Is A Flat Roof Cheaper Than Shingles?

There are generally two options for roofing projects – flat or pitched. If you’re considering putting a flat roof on your commercial building, the price will obviously be a factor in your decision.

So how do you know if a flat roof will work for your project? How much will it cost?

Let’s start with defining these different types of roofs..

What Is A Flat Roof?

Basically, any roof that doesn’t have a peak is a flat roof. They may have a slight slope to allow water to reach the gutter system, reducing the need for roof leak repair, but the slope is almost undetectable.

They are most common for commercial roofing in Los Angeles but have become increasingly seen in residential homes.

Price Of A Flat Roof

A flat roof will be cheaper than shingles because the material usually comes in large rolls instead of small sheets of asphalt. Less lumber is also used on these roofs.

Many factors will influence this price, which is why it’s recommended to request estimates from your local LA roofers before choosing.

The price is less than a traditional pitched roof, but it does come with its pros and cons. The type of material used will also increase the price. You should keep in mind that using a durable material like rubber or metal will increase the price but will also increase its lifespan.

Type Of Material And Price Per Square Foot

  • Metal: $4–$30
  • Modified Bitumen: $4–$8
  • Built-Up (BUR): $4–$10
  • Rubber Membrane: $4–$13
  • Single-Ply Membrane: $4–$7
  • Thermoplastic Polyolefin (TPO): $3.50–$14
  • Fiberglass or GRP: $4-$6


Flat roofs are less expensive to install than asphalt roofs. It requires less material and is structurally simpler, lowering construction and repair costs.

Not only do you save money on the installation, but you can keep utility costs manageable, especially during LA’s searing summers.

Flat roofs also give a clean and minimalist look to buildings, whether they’re residential or commercial.

They also offer more usable space and are easy to clean as they are more accessible. This helps prevent mold, algae, and any debris from building up.


Flat roofs tend only to last 10-25 years with proper care. This is something to consider when deciding what type of roof to get – asphalt roofs last between 15 to 35 years.

Flat roofs also have a higher chance of leaks which may have you seeking roof leak repair sooner than an asphalt roof would.

Flat roofs can pose issues in cold weather. Because the roof isn’t sloped, it will hold water, which can lead to leaks. You can consult with LA roofers for weatherproofing materials to prevent this.

Final Thoughts

Installing a flat roof can be rewarding because it’s so cheap, but it does have some drawbacks.

Although most of the cons can be fixed by using better materials, there are some things you can’t change. Reach out to your local experts in commercial roofing in Los Angeles if you have any questions or concerns about what works best for your property.