HOW TO USE IT
How to use the Interior Door Casing Installation Cost Calculator
- 1
Enter how many doors to case.
- 2
Choose the casing price per door (MDF, wood, PVC).
- 3
Enter installation per door and review the total.
THE MATH
Door casing formula
Total cost = count × (casing + installation)The cost includes the casing (decorative trim) plus installation: cutting, nailing, caulking and finishing.
PRACTICAL EXAMPLE
One interior door
1 × ($50 casing + $100 installation) = $150.
FAQ
Frequently asked questions
Which material?
MDF is budget and stable; wood costs more but takes stain beautifully; PVC suits bathrooms and high-humidity areas. Match the room style.
Why replace casing?
New casing freshens a room at low cost, especially after painting. It also hides irregular wall joints.
How long does it take?
One casing takes 1-2 hours; a run of 5-10 doors takes a day.