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Flat Roof Installation

Installing a flat roof demands precision—choosing the right materials and ensuring robust drainage is key to keeping leaks at bay and extending your roof’s life.

Nailing a flat roof setup is critical—it needs meticulous attention and spot-on skill to keep water out and ensure it stands the test of time. Unlike pitched roofs, flat roofs have a minimal slope, making proper installation essential to prevent water pooling and leakage. Picking the right stuff for your roof, making sure it’s got strong bones, and setting up a solid way to deal with rain are key parts of putting in a flat roof that lasts. This guide’s gonna break down the essential moves you’ve gotta make and things to think about when putting together flat roofs, plus we’ll look at what’s good and not so hot about choosing this style of roof.

At Aegis Construction Group, Inc., we’re all about bringing top-notch roofing, siding, and gutter solutions to your doorstep with a personal touch that’s as sturdy as the homes we work on.

Aegis Construction Group, Inc. is a family-owned construction company in Chicago, Illinois. We’re a hometown crew from Chicago, crafting top-notch roofs, siding, and gutters. We mix solid skill with friendly service that hits the mark every time. We’ve consistently gone above and beyond for our clients, forging strong bonds through work that surpasses their expectations. Our skilled crew takes pride in expertly resolving homeowners’ roofing challenges, revamping sidings, and overhauling gutters with precision.

types flat roofing

Types of Flat Roofing Systems

Our team at Aegis Construction Group excels at installing several different types of flat roofs. Each of the different flat roof materials has its characteristics, advantages, and disadvantages. The following are some of the most common flat roof material types:


  • Built-Up Roof

    The built-up flat roof is built on multiple layers of waterproof material, which is typically made with roofing tar paper and asphalt and finished with gravel. The built-up roof is fire retardant but is extremely heavy and messy to install. This will be the cheapest option and will save money, but it is not commonly recommended for occupied homes.


  • Modified Bitumen Flat Roof

    The modified bitumen flat roof is a single-ply rolled roof, similar to an ice and water shield. This flat roof is installed using torch-down or peel-and-stick systems.


  • Rubber Membrane Flat Roof

    The rubber membrane flat roof is a synthetic rubber material, which is extremely durable, lightweight, and resistant to UV radiation. Rubber roofing is arguably one of the most common flat roofing materials and is relatively simple to install.


  • PVC Membrane

    The PVC membrane flat roof is created with a filament lattice known as a scrim. The PVC membrane is relatively modern and is extremely effective.


  • Thermoplastic Olefin Flat Roof

    The thermoplastic olefin flat roof is made with a reflective roofing membrane created with polypropylene and ethylene-propylene rubber.


  • Metal Flat Roof

    The metal flat roof has become extremely popular in recent years. Due to their long-lasting nature and the bonus of hardly needing any maintenance, metal roofs are now a top choice for contemporary construction projects. You’ve got options like aluminum, steel, or copper when choosing a metal roof—each with its own perks for durability and ease of upkeep.

flat roofs

Flat Roof Maintenance and Repair

One of the most important factors for the long life of a roof and for preventing issues like leaks is maintenance and repair. The following are the routine maintenance tips to keep in mind to increase the life of your flat roof:


  • Regular Inspections

    It is vital to conduct frequent inspections to find and address any issues quickly.


  • Clear Debris And Maintain Cleanliness

    Remember to clear the roof of debris, as the debris could lead to water pooling and potential damage.


  • Address Ponding Water

    Another routine maintenance that must be completed is to clear any areas where there is standing water on the roof.


  • Maintain And Repair Flashings

    Remember to maintain the flashings and repair any damage to prevent water infiltration.


  • Scheduling Professional Inspections

    It may be advisable to go through a professional to complete an inspection to identify any potential problems.


  • Applying Roof Coatings

    A roof coating is a great way to protect the roof surface and dramatically extend its lifespan.


  • Address Leaks Quickly

    Once a leak is detected, it is imperative to repair the damage quickly to prevent a greater issue. Unfortunately, flat roofs leak, so it is important to check an old roof routinely.


  • Remove Snow And Ice

    If you live in a colder climate, it is helpful to remove snow and ice over a storm to prevent damage.


  • Manage Vegetation

    Any vegetation should be cleared as it could damage the roofing material.


  • Implementing Safety Features

    When performing maintenance, always follow appropriate safety measures to prevent accidents.


Flat roofs, while sleek and cost-effective, can also invite leaks and require constant upkeep to dodge bigger issues down the line.

Regardless of the type of flat roof you choose to install, they all offer advantages and disadvantages.



  • Cost-Effectiveness
  • Extra Usable Space
  • Easier Maintenance and Inspection
  • Architectural Appeal
  • Energy Efficiency



  • Drainage issues
  • Maintenance challenges
  • Limited insulation
  • Installation complexity
  • Weather resistance

Design and Construction of Flat Roofs

When installing and designing a flat roof, there are a few important considerations to take into account to ensure their effectiveness and longevity.


  • Slight Incline

    Despite their name, a flat roof is built with a slight incline of at least ⅛ inch per foot to facilitate proper water drainage and prevent pooling.


  • Structural Support

    The roof structure itself must be strong enough to support the additional weight of the roofing materials and any other potential loads like snow.


  • Material And Layers

    The flat roofs have multiple layers, usually including a deck, vapor barrier insulation, and a roof board.


  • Drainage System

    An effective drainage system is vital to ensure proper water runoff and prevent water infiltration.


  • Roof Spread

    Proper construction and maintenance can prevent issues such as roof spread, which is a common concern with flat roofs. Well-constructed flat roofs, if made by professionals, can serve for at least 10-15 years with proper maintenance.


  • Airflow matters a lot. Without it, our rooms just wouldn’t be the same—they’d feel stuffy and uncomfortable. It’s like when you’re trying to focus on your work or chill at home; fresh air is essential to keep everything feeling right. Plus, think about health—good ventilation means fewer germs hanging around. So yeah, keeping that air moving is super important for both comfort and well-being.


  • Proper airflow is key—it dodges problems like overheating and moisture build-up.

Why People Choose Aegis Construction Group

There are many different advantages to going through Aegis Construction Group for your roofing needs. Choosing Aegis Construction Group for your roofing project means you’ll benefit from top-notch service and materials, expert staff who know their stuff, local convenience, budget-friendly prices, and dependable outcomes.

  • Delivering top-notch service means meeting customers’ expectations with the same attention to detail and care as if their experience were a story coming vividly to life in their minds.
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So, when you’re deciding if a flat roof is the way to go, weigh up all the pros and cons with care – it’s more than just picking out materials; it’s about getting the whole design and water flow spot on.

When you’re putting in a flat roof, it’s super important to nail every detail—like picking the right stuff to build with and getting the design and water runoff just right. Before you decide, it’s crucial to weigh up the pros and cons of flat roofs; this way, you’ll know if it’s the right fit for your building.

For those considering flat roof installation, consider Aegis Construction Group, Inc. When it comes to top-notch flat roof installation, Aegis Construction Group, Inc. shines as a trustworthy option backed by their dedication to quality and customer satisfaction. Count on Aegis for a pro-level exterior makeover, leveraging stellar materials and seasoned pros dedicated to your satisfaction. Whether it’s for residential, commercial, or industrial properties, Aegis Construction Group, Inc. Aegis Construction Group, Inc. pours its deep know-how and unwavering commitment to quality into every job it tackles. If you’re after excellent service, give Aegis a shout for a chat; they’ll show you how their sharp skills can seriously upgrade your project. Contact us today!

flat roof material