Double Doors Have a Unique Problem
A single exterior door closes against a solid frame.
Double doors meet each other in the centre.
That centre seam needs its own solution.
One component commonly used is the:
Astragal.
What Does It Do?
The astragal attaches to one of the door panels and helps:
- Cover the centre gap
- Improve weather sealing
- Coordinate locking
- Stabilize the inactive panel
Why Does Alignment Matter?
If the two panels shift, the astragal may no longer seal properly.
Possible symptoms include:
- Drafts
- Daylight
- Difficult locking
- Water during wind-driven rain
Does Every Double Door Use the Same Design?
No.
Systems differ based on:
- Manufacturer
- Door material
- Locking hardware
On Double Doors, the Middle Is Part of the Weather Seal.
Envirotech Exteriors can assess the complete double-door system when drafts or operation problems develop at the centre joint.