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Flat Roof Types: Which Is Right for Your Home or Business?

Redoing your roof is one of the best investments you can make in your property. A new roof can even turn a profit, at times. Investments in a roof renovation can yield up to 107% ROI.

Flat roofs are some of the most popular types of roofs, especially when it comes to commercial buildings. And picking the right flat roof types is a no-brainer, right?

image - Flat Roof Types Which Is Right for Your Home or Business
Flat Roof Types Which Is Right for Your Home or Business

Turns out there’s a little more to it than that. Here are some of the things you need to know about the different flat roof types to help you get the perfect roof for your building!

3 Flat Roof Types

Flat roof types have been around for as long as there have been buildings. There’s more variation and more intricacy in flat roof construction than you might imagine from their simple planes and right angles.

Built-Up Roofs

Built-up roofs are some of the most common types of flat roofs found in the United States. They’ve been built regularly for over 100 years. Built-up roofs are also sometimes referred to as bur.

Built-up roofs are some of the simplest flat roofs you can construct. They’re usually made with tar or asphalt. 2 or 3 layers of tar or asphalt are sometimes then covered with pea gravel or aggregate.

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Bitumen Roof

A bitumen roof is another simple type of flat roof. In fact, a bitumen roof is even simpler than a built-up roof

Generally speaking, a bitumen roof is usually constructed with just 2 layers There’s a sub-layer known as a base sheet. And then there’s a top layer called the cap sheet.

A bitumen roof can either be laid down hot or cold. A torch can be used to fuse the two layers. There are also peel-and-stick types of bitumen that can be used for roofing.

With a bitumen roof, however, you’re left with seams fairly regularly. There are seams every 3 feet. This can sometimes trap moisture so be careful if you’re in a damp climate.


Some flat roofs can be walked on more regularly than others. Tile roofs are strong, making them an ideal solution for flat roofs that need to be sturdy as well as look appealing.

Tile has a long and storied history as a roofing material. It’s regularly used in hot and arid climates, helping to deflect the heat and insulate the house or structure.

That also means that tile roofs have a historical charm, as well, that can make them appealing if you’re going for more of a classic look.

The one thing you’ll want to consider if you decide to opt for a tile roof is if your roof is strong enough to hold the weight of the tiles. They can be rather heavy especially when you put them all together!

Now that you know what kind of roof you’re looking for, check out Lewis Roofing to see how they can help bring your vision to life!

Looking for More Renovation Tips?

The buildings we inhabit set us up for success. Form follows function, as they say. You want to set your home or commercial building up properly to give yourself every opportunity to thrive.

Even something as seemingly simple as flat roof types can be deceptively complex. Taking the time to get it right, exactly as you want it, sets you up to make the most of the buildings you inhabit.

Whether you’re looking for design tips on choosing flat roof types or inspiration for your interior design, you’ll find something to inform and enlighten on our pages. Browse the rest of our site today!