Pine vs. Oak vs. MDF Interior Doors: What Contractors Actually Use
By WholesaleDoorHub Team · May 2026
Direct answer: Hollow core MDF is the standard for interior residential doors (STC 20–25, $85–$145). Solid core is the upgrade for acoustic separation (STC 28–34, $145–$280). Solid wood stile-and-rail is the premium option for high-end residential ($220–$580).
Pine vs. Oak vs. MDF: What Contractors Actually Use
This is the most practical material question for interior door procurement:
| Material | STC Rating | Weight | Paintability | Stainability | Wholesale Cost |
|---|---|---|---|---|---|
| MDF hollow core | 20–25 | 25–35 lbs | Excellent | Poor | $85–$145 |
| MDF solid core | 28–34 | 55–75 lbs | Excellent | Poor | $145–$220 |
| Solid pine | 25–30 | 45–65 lbs | Good | Good | $195–$340 |
| Solid oak | 27–32 | 60–80 lbs | Good | Excellent | $280–$520 |
| Solid maple | 28–33 | 65–85 lbs | Good | Good | $320–$560 |
When to Use Each Material
MDF Hollow Core
Use when: Budget is the primary constraint. Interior, low-traffic doors. Rental properties, entry-level residential, investor-grade renovation.
Avoid when: High-traffic areas (front entry, home office), acoustic separation is required, or the client wants a stained finish.
MDF Solid Core
Use when: Acoustic separation matters (home office, master bedroom, media room). Client wants the feel of a solid door without the cost of solid wood.
Best value upgrade: The cost premium over hollow core ($60–$80 per door) is almost always justified by the acoustic improvement.
Solid Pine
Use when: Client wants a stained finish. Premium residential where hollow core would feel cheap. Craftsman or farmhouse-style projects.
Procurement note: Pine is the most affordable solid wood option. It is softer than oak and more prone to denting, but acceptable for most residential applications.
Solid Oak
Use when: Client wants the best quality solid wood door. High-end residential. Projects where the door will be a design feature.
Procurement note: Oak is significantly heavier than pine. Verify hinge spec — 3 hinges are required for oak doors over 80" tall.
Acoustic Performance Guide
For projects where acoustic separation is a design requirement:
| Application | Minimum STC | Recommended Door |
|---|---|---|
| Standard bedroom | STC 25 | Hollow core MDF |
| Master bedroom | STC 30 | Solid core MDF |
| Home office | STC 32 | Solid core MDF |
| Home theater | STC 38+ | Solid core + acoustic seal |
| Between units (condo) | STC 45+ | Solid core + acoustic jamb |
FAQ
Q: What is the best material for interior doors?
A: For most residential applications, solid core MDF offers the best balance of cost, acoustic performance, and durability. Solid wood is the premium choice for high-end projects.
Q: Do hollow core doors feel cheap?
A: Hollow core doors feel noticeably lighter than solid core. For client-facing spaces (master bedroom, home office), solid core is the better specification.
Q: Can MDF interior doors be stained?
A: No. MDF does not accept stain — it absorbs unevenly and looks blotchy. If a stained finish is required, specify solid wood.
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