How to Replace and Install Interior Doors – A Step-by-Step Guide with Batavia Tools

Whether you're renovating your home or just updating a single room, replacing interior doors is one of the quickest ways to upgrade the look and functionality of your space. But what may seem like a daunting task is actually a manageable DIY project—especially when you have the right tools and a clear plan. In this guide, we’ll walk you through how to replace and install interior doors, including pre-hung doors, frame adjustments, and finishing touches—with the help of precision tools from Batavia.

When should you replace an interior door?

You may need to replace an interior door if:

• The door is warped, cracked, or damaged
• The hinges are loose or misaligned
• You're updating your home's style
• You want to add glass or replace an existing window
• You're switching from one door type to another (e.g., standard to rebated)

What you’ll need

Before getting started, make sure you have the right tools:

• Batavia multi-function saw – For trimming doors or cutting hinge recesses
• Cordless drill/driver – For screwing hinges and handles
• Measuring tape & level – For accurate alignment
• Chisel and hammer – For fitting latches and hinges (if needed)
• Sander or sanding block – For finishing edges

Step 1: Measure the existing door and frame

Always measure:

• Height and width of the existing door
• Thickness of the door
• Hinge and handle positions

If you're replacing a rebated or pre-hung door, double-check frame dimensions and reveal depth.

Step 2: Remove the old door

• Unscrew the hinges
• Remove the door from the frame
• If replacing the frame too, carefully remove trim and the frame using a pry bar and multitool

Step 3: Install or replace the door frame (if needed)

If the frame is damaged or you're updating the look:

• Use treated timber or a door frame kit
• Ensure the frame is level, square, and plumb
• Secure with appropriate screws and check all edges with a spirit level
• Install the doorstop if not pre-installed

Batavia’s cordless drill makes this process faster and cleaner—especially in tight hallway spaces.

Step 4: Fit the new door

• Mark hinge locations using your previous measurements
• Use a chisel or multi-function saw to recess the hinge areas
• Attach the hinges and test the door in the frame
• Adjust if needed for smooth swinging and proper gaps (approx. 2–3mm)
• If the door doesn’t fit perfectly, trim the edges using Batavia’s multi-function saw with a guide for straight, splinter-free cuts

Step 5: Install handle, latch, and strike plate

• Mark and drill for the door handle and latch
• Chisel the latch and strike plate recesses
• Secure all hardware with a screwdriver or drill
• If your new door has a glass panel, double-check that it's properly sealed and secure

Step 6: Final checks and adjustments

• Test the door for smooth operation
• Sand any tight spots
• Apply paint, varnish, or sealant as needed
• Reattach any casing or trim around the door frame

Special situations

• Replacing a door with a window: Consider load-bearing implications and insulation
• Adding a door to a new wall opening: Ensure the wall is reinforced for a frame
• Switching door types (e.g., standard to rebated): Measure carefully and adjust frame width

Why use Batavia tools?

Batavia offers precision, power, and versatility for door installation tasks:

• ✅ Multi-function saws for cutting doors and recesses
• ✅ Cordless drills for hinge and handle mounting
• ✅ Measurement tools for perfect alignment
• ✅ Ergonomic design for less fatigue during long projects

Upgrading your interior doors is easier than you think. With Batavia tools and this step-by-step guide, you can replace or install doors like a pro—whether you're working on a single bedroom or an entire home renovation.