Exterior Doors

The adage ‘You don’t get a second chance to make a first impression’ is especially true when it comes to your home’s entry doors. Northern Building Supply has one of the largest selections of entry and patio doors in the area. We only offer tried and true brands that bring beauty, performance and leading security features.

Our selection includes solid wood, fiberglass, steel doors and more, with options for any budget. Choose from the latest in craftsman style doors to the newest looks in modern or vintage. We can help you take it to the next level with decorative glass, hardware, sidelites, transoms and more.

Northern Building Supply has all the options and solutions you need. Contact us today, or visit one of our showrooms, to meet with a door specialist and find the perfect entry door for your home.

Featured Brand

Exterior Doors by

Therma-Tru Doors

Elevate your entryway to extend your style to the exterior for instant curb appeal!
Therma-Tru Doors has it all—beauty, strength, security, and energy efficiency.


Below are a few of the Exterior Doors brands that we offer at Northern Building Supply.
Don’t see what you’re looking for? Contact the location nearest you. 

Our Products


The wood grain is one of the most attractive features of a wooden exterior door. Wooden doors are durable, insulate your home, and reduce outside noise. They’re also versatile and can be easily trimmed to fit any opening.


Vinyl doors are a durable and energy efficient option for exterior entryway or patio door applications. Vinyl doors are very low-maintenance, can easily be cleaned, and never need to be painted.


Fiberglass entry doors offer the look of real wood without the disadvantages. They will never warp or rot, and are a very low-maintenance option. A fiberglass entryway door will insulate your home as well.


Steel entry doors are an affordable, durable option that requires little maintenance. They offer style flexibility, and can easily be painted to match your home’s exterior. Steel doors are also energy efficient and will not warp or rot.


Wood-Aluminum clad doors offer the durable exterior protection of aluminum with the beauty of a wood interior. They are a great low-maintenance door for harsh environments, as aluminum does not get dinged or dented.


Medium density fiberboard (MDF) is an engineered wood product made from recycled wood fiber and resin. MDF doors are easier to paint than wood doors due to its smooth surface.

Ready to start your project?

Visit our showroom or speak with a designer for a free consultation.