5 Questions to Ask About Installing or Replacing Flat, Foam, or Single-Ply Roofing

Known for their sleek and minimalist look, flat roofs are becoming a popular alternative to higher-pitched roofs. If you’re considering installing or replacing a flat roof, one of the first things on your to-do list will be contacting a roofing professional. During that conversation, you can expect the pro to ask about your budget and schedule, as well as a few other common flat roof questions, which you’ll find below.

1. What kind of roofing material would you like?

Flat and low-pitched roofs generally use different materials than steeper roofs. Single-ply roofing—such as Ethylene Propylene Diene Monomer (EPDM) or Thermoplastic Polyolefin (TPO)—is a common choice, but spray foam and metal are also popular. If you aren’t sure which flat roofing material is right for your home, your contractor can suggest some suitable options.

2. What condition is your roof in?

Your roof’s current condition has a big impact on your project’s budget and timeline. For example, if a tree fell and damaged one section of your roof, your flat roofing professional may only need to replace the damaged area. But if you have an aging roof with major problems (such as leaks or water damage), you might need a new roof. 

Replacing the entire roof requires more labor and materials, which extends the project schedule and increases your costs. You’ll pay significantly more if you’re hoping to replace a pitched roof with a flat roof.

3. Do you plan to add any additional features?

Many people install flat roofs for their clean and modern aesthetic, but this type of roof is also attractive for functional reasons. Depending on the roofing material you choose, you may be able to use your roof as an outdoor living space, terrace, or green roof. Flat roofs are also great for installing solar panels. If you plan to use your roof for any of these purposes, let your contractor know ahead of time.

4. What’s your budget?

Budget will be another important topic of discussion with your roofing pro. On average, replacing a flat roof costs $3,330 to $11,530, but your final cost will depend on the size of your roof, the type of roofing material, labor prices in your area, and other factors. Before meeting with your contractor, find out if your homeowners insurance will pay for your roof replacement. If so, that could impact your budget significantly. 

5. What’s your timeline? 

It takes about five days of work to replace a flat roof. However, large or complex projects could take longer. If your roof is seriously damaged and needs immediate replacement (for example, after a storm or natural disaster), you’ll need to find a roofing company that performs emergency roof repair and replacement (but expect to pay more for any urgent services).