One coat of paint won't give you the durability you need.
On average, one-coat paint jobs last just 3 years. This is usually what a home builder will apply, and that is why most new homeowners paint after 3 years of moving into their new home. Two-coat paint applications can last up to 10 years.
We always apply at least two coats of paint. This assures the best durability and the best coverage ratio. Some colors will often require more than two coats to achieve full coverage.
A two coat application will look better on your home and last twice as long. This is just a better investment for you as the customer.