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Build Up Your Baseboards

Project Overview

Build Up Your Baseboards

This tall, British-inspired baseboard instantly elevates the style of a room. Adding moulding to your baseboard can be a relatively simple project when you let a compound mitre saw handle all the complicated cuts.

5 Steps

  1. Measure
  2. Prime and paint
  3. Measure
  4. Caulk all seams
  5. When caulking dries

Step 1


the length of your wall to determine how much moulding you'll need to purchase.

Prime and paint

Step 2

Prime and paint

a first coat on all moulding. Cut your 1/2" MDF (medium density fibreboard) into 5-1/8" strips and attach to the wall, against the floor, using 2" brad nails. This is used to shim the #1 base out from the wall. Attach the #1 base moulding to the face of the MDF using 2" brad nails. Then stack #2 base moulding on top of base #1 and attach with 2" brad nails.


Step 3


up the wall 4" from the top of base #2 and apply the base cap, thick side down, using 2" brad nails. You may choose to use a 4" block of wood as a spacer. The final piece of moulding to be applied is the door stop at the bottom of base #1. Ensure that it is snug to the floor.

Caulk all seams

Step 4

Caulk all seams

between moulding and fill nail holes.

When caulking dries

Step 5

When caulking dries

sand smooth and apply a final coat of paint.

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Project Details

Skill Level: Beginner

Time: 2 hours

Before you start, read this »

Due to differing conditions, tools, and individual skills, The Home Depot® assumes no responsibility for any damages, injuries suffered, or losses incurred as a result of attempting to replicate any of the home improvement ideas portrayed in this website Before beginning any home improvement project, review it thoroughly to ensure you or your contractor can finish the project and if any doubts or questions remain, consult local experts or authorities. Because codes and regulations vary greatly, you always should check with authorities to ensure that your project complies with all applicable local codes and regulations. Always read and observe all of the safety precautions provided by any tool or equipment manufacturer, and follow all accepted safety procedures.


  • Base #1 moulding
  • Base #2 moulding
  • Base cap moulding
  • Door stop moulding
  • 1/2" MDF
  • Latex caulking
  • Primer
  • Paint
  • 2" brads


  • 18-gauge brad nailer
  • Compound mitre saw
  • Hammer
  • Tape measure
  • Caulking gun
  • Paint brush

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