Homeowners often associate flat roofs with commercial roofing. However, a flat roof architecture—while atypical for a home—is also viable for residences. We’ll discuss the difference between a flat vs. sloped roofs and their respective pros and cons.
A flat roof installation may be cheaper since the total area is usually less than that of a sloped roof. We recommend a flat roof if you contemplate using the area as a part-time living space. This is a trendy option. Some homeowners even go the creative route by covering the roof in soil and grass to promote green living. While this is certainly an option, the roots can burrow into the roof and cause leak-induced damage.
The biggest drawback, though, is a flat roof’s relatively short life expectancy. Flat roofs are typically made from asphalt topped with a gravel-based coating. While fairly inexpensive, the lifespan is only about 10 to 15 years. Other material options include rubber with an elastomeric membrane. This is significantly more expensive but has a lifespan of 40 to 50 years. The warranty, though, may still protect the roof for just 10 to 15 years.
You can’t go wrong with a sloped residential roof if you want your house to match all the others in the neighborhood. The slope effectively prevents water from pooling after a rain spell. If you have a second floor, the slope provides some attractive architectural angles.
With a sloped roof, you also have the traditional shingle and tile options. This provides a number of design styles for achieving a contemporary or classical appearance.
Contact Roofing and Construction if you’re ready for a roof overhaul. We provide other roof-related services as well. Both sloped and flat roofs are valid choices if you want to fully explore your options.
Edited by Justin Vorhees
Serving customers in Bellevue, Issaquah, Mercer Island, Mill Creek, Mukilteo, Redmond, Snoqualmie