Trim and Molding

Precision Measuring

Accurate measurements are crucial for professional results:

• Measure twice, cut once - Double-check all measurements
• Account for reveals - Standard 3/16" reveal for window/door casing
• Check for square - Most rooms aren't perfectly square
• Plan joint locations - Avoid joints in highly visible areas

Cutting Techniques

Common Angles

• Inside corners: Use coping method for best fit
• Outside corners: 45° miter cuts (may need adjustment)
• Crown molding: Spring angles typically 38° or 45°
• Baseboards: 90° cuts for straight runs, 45° for corners

Inside Corner Joints

The coping method is preferred for inside corners:

1. Cut first piece square to fit flush against wall
2. Cut second piece at 45° with miter saw
3. Cope the profile using coping saw
4. Test fit and adjust with sandpaper if needed
5. Install with tight fit

Outside Corner Joints

1. Cut both pieces at 45° (opposite directions)
2. Test fit the joint before installation
3. Adjust angle if needed (rooms aren't always square)
4. Use angle finder for precise measurements
5. Install with tight joints

Scarf Joints (End-to-End)

1. Cut 45° angles on both pieces
2. Cut in opposite directions for proper fit
3. Glue joint before nailing
4. Clamp until glue sets

Troubleshooting Joints

Baseboard Installation

1. Start with longest wall for best appearance
2. Mark stud locations for secure nailing
3. Cut and fit pieces before final installation
4. Nail into studs every 16 inches
5. Use finish nails and set below surface

Crown Molding Installation

1. Determine spring angle (usually 38° or 45°)
2. Set up compound miter saw with proper angles
3. Install level line around room
4. Cut and test fit each piece
5. Nail into studs and ceiling joists

Window and Door Casing

1. Establish reveal lines (typically 3/16")
2. Install head casing first
3. Cut side casings to fit under head
4. Check for level and plumb
5. Nail securely into framing

Installation Tips

• Use construction adhesive for extra hold
• Pre-drill holes near ends to prevent splitting
• Set nails below surface for putty filling
• Check alignment frequently with level
• Work systematically around the room

Caulking Process

Proper caulking creates a professional finish:

1. Clean surfaces before caulking
2. Cut caulk tube tip at 45° angle
3. Apply steady bead along joints
4. Smooth with wet finger or caulk tool
5. Clean excess immediately

Where to Caulk

• Joints between molding pieces
• Gaps at wall and ceiling
• Small gaps around windows and doors
• Nail holes (after filling with putty)

Finishing Steps

1. Fill nail holes with wood putty
2. Sand lightly to smooth surfaces
3. Apply primer if painting
4. Paint or stain as desired
5. Touch up caulk if needed

Paint vs. Stain

Final Quality Check

• All joints tight and smooth
• Consistent reveals around windows/doors
• Nail holes filled and sanded
• Caulk smooth and uniform
• Finish even and professional