Introduction

If a short run of molding is damaged, replace it all; for longer runs replace only the damaged area with a patch. Take a sample of your baseboard to a lumber yard to match it.

Step 1

RX-DK-DIY228018_pry-out-damaged_s4x3

2009 Dorling Kindersley Limited DK - Do It Yourself Home Improvement

DK - Do It Yourself Home Improvement, 2009 Dorling Kindersley Limited

Remove Damaged Section of Baseboard

To replace a damaged section of baseboard, pry the damaged section away from the wall. Place wooden shims between the molding and wall, on each side of the damaged area.

Step 2

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2009 Dorling Kindersley Limited DK - Do It Yourself Home Improvement

DK - Do It Yourself Home Improvement, 2009 Dorling Kindersley Limited

Mark Section to be Cut

Draw pencil guide lines vertically down the baseboard on each side of the damaged area, marking the section that will be cut away.

Step 3

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2009 Dorling Kindersley Limited DK - Do It Yourself Home Improvement

DK - Do It Yourself Home Improvement, 2009 Dorling Kindersley Limited

Cut Down Each Marking

Using a miter box, carefully cut down each guide line, using short, accurate strokes. Cut at the angles shown below.

Step 4

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2009 Dorling Kindersley Limited DK - Do It Yourself Home Improvement

DK - Do It Yourself Home Improvement, 2009 Dorling Kindersley Limited

Reattach Existing Molding

Remove the blocks from behind the baseboard and reattach the existing molding to the wall.

Step 5

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2009 Dorling Kindersley Limited DK - Do It Yourself Home Improvement

DK - Do It Yourself Home Improvement, 2009 Dorling Kindersley Limited

Measure and Cut New Section

Measure and cut a new section for the gap. Apply wood glue to its mitered ends and adhesive across the back.

Step 6

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DK - Do It Yourself Home Improvement

DK - Do It Yourself Home Improvement

Attach New Section

Position the board, allowing the glue and adhesive to adhere to the baseboard and wall. Drive in nails to strengthen the joints.

Step 7

How to Repair External Miter (Outside Corner)

Baseboard molding can sometimes crack open and become unsightly. In most cases, this is because the joint was not properly glued and secured in place when it was installed.

Drill pilot holes through the top and bottom of the joint, making sure that you drill into both mitered edges of the corner (image 1). Apply some wood glue to the joint, and wipe away any excess (image 2). Use finish nails through the pilot holes to secure the miter in position or, for larger baseboards or moldings, use thin-gauge screws (image 3).