Building Grit
How to Install an Exterior Double Door (Full Outswing Door Installation Start to Finish)
July 22, 2026 Length: 7 min Watch on YouTube (opens in a new tab)
In this Building Grit video, Michael Tull of Tull Sales installs a Plastpro Nova 90 fiberglass exterior double door at Grit Studios, where The Grit Blueprint Podcast is filmed. He replaces an old steel door with a new outswing double door and covers the mistakes that cause warranty claims.
About This Episode.
Watch us install a brand new Plastpro Nova 90 fiberglass double door at Grit Studios, our in-person podcast studio, start to finish. Michael Tull of Tull Sales walks through the full process of replacing an old steel door with a new outswing double door, including the mistakes that cause warranty claims and how to avoid them.
The new front door completely changes the look of the studio where we film The Grit Blueprint Podcast. It's a 3/4 lite over panel with rain glass and Low-E coating, built by Harris Door & Millwork and donated by Plastpro.
Door provided by Plastpro in partnership with Harris Door & Millwork.
Installation by Michael and Melanie Tull, Tull Sales.
What you'll learn in this video
- Tools you need for an exterior door installation
- How to remove an old door, frame, and sill
- Checking your sill and opening for level (and what to do if it's not)
- When to use a sill pan and why it matters
- The hidden screws and shipping hardware you MUST remove before installing
- How to adjust a rough opening for a replacement door
- Setting, plumbing, shimming, and securing the frame
- Drilling for head and foot bolts on a double door with a t-astragal
Key Takeaways.
- Check the sill and opening for level before you set the new door, and know when to use a sill pan.
- Hidden screws and shipping hardware must be removed before the door is installed.
- Set, plumb, shim and secure the frame, adjusting the rough opening when fitting a replacement door.
- On a double door with a t-astragal, you drill for the head bolt and foot bolt.
- The new door is a 3/4 lite over panel with rain glass and Low-E coating, built by Harris Door & Millwork and donated by Plastpro.
Questions and Answers.
How do you install an exterior double door?
Michael Tull of Tull Sales removes the old door, frame and sill, checks the sill and opening for level, and adjusts the rough opening. He then sets, plumbs, shims and secures the frame and drills for the head and foot bolts.
What must you remove before installing a new door?
Remove the hidden screws and shipping hardware before installing the door.
What door was installed at Grit Studios?
A Plastpro Nova 90 fiberglass outswing double door, a 3/4 lite over panel with rain glass and Low-E coating. It was built by Harris Door & Millwork and donated by Plastpro.
Keep Watching.
Book a Call
Pick a time that works for you. We will talk through your event, your audience and your goals, and whether Stefanie is the right fit.