As with any roofing material, there are benefits and drawbacks to consider before installing roll roofing. On the plus side, roll roofing is budget-friendly, lightweight, and comparatively easy to install. It is also ideal for low-sloped roofs and lasts around 10 years. The cons of roll roofing, however, include its low durability compared to roofing materials, restricted color choices, and low ROI.

Pros:

• Low-cost

• Lightweight

• Cut to size

• Easy and quick installation 

• Designed for low-sloped roofs

• Waterproofs your roof for an average of 10 years

• Easy to purchase and transport

Cons:

• Less durable than asphalt shingles

• More prone to cracks and tears

• Short life span

• Not as many color or style choices

• Not as aesthetically pleasing as shingles, wood, or clay tiles

• Not preferred for a higher home resale value

Yes, clay and concrete tile roofs will keep your home cooler in the summer for two reasons. First, the material has low heat conductivity, so heat transfer from the sunlight and the outside air to your home will be very slow. Additionally, tile roofs have air gaps between the tiles and the roof decking, which helps further insulate your structure from heat gain. Light-colored tile is especially energy-efficient and will minimize how much outside heat transfers into your home.

If the bay window extends beyond your existing roofline, you must add a roof or a small “skirt” to divert storm water and prevent water damage. The window roof can match your existing house roof, or be finished with copper or other decorative materials. Most bay windows have a roof with complete flashing regardless of their placement to prevent leaks into the home.

Spray foam roofs don’t stand up well to impact, so they won’t last as long as something like a tar and gravel roof and other flat roof materials in areas where extreme weather is common. Due to the reduced durability, you’ll also need more frequent maintenance and repairs for a spray foam roof, and those costs will add up over time. Spray foam roofs are relatively uncommon, so you may also struggle to hire a roofing contractor who can install one.