How to fill gaps in skirting board corners

by Sam Wood | Last Updated: 27/07/2021

Gaps in your skirting board corners can be caused by a multitude of different things. Poorly cut mitres, walls that aren’t straight and even settlement in new buildings can be some of the leading causes. Regardless of what caused these gaps in your skirting, you want to fill them, so what is the quickest and easier way to do this?

The Gap In The Skirting Board Corner

The Gap In The Skirting Board Corner

How to fill gaps in skirting board corners

Luckily this is a really simple fix and any DIY’er is capable of doing this job. All you need is some decorators caulk and an applicator gun, you might possibly need sanding paper and masking tape too depending on your circumstances.

(don’t worry about the state of my skirting boards, these will not be staying it is just for the example!!)

Supplies Needed:

  • Decorators caulk
  • Caulking gun
  • Masking tape (for protecting carpet)
  • Sanding paper

Step One – Get Your Caulking Gun Ready

Before we begin we want to get our caulking gun ready to go. Cut the end of the tube off your decorator’s caulk, a sharp Stanley knife works well here. Then get it into the gun and squeeze the trigger to get the tube fixed in place, as soon as you feel any resistance stop squeezing! You don’t want any caulk coming out just yet.

If you have carpet which you are worried about getting caulk on then it’s time to use the masking tape. Cover your floor up to the skirting board. This way if any caulk does fall off then it will land on the tape rather than your carpet.

Decorators Caulk

Decorators Caulk

Step Two – Apply Caulk To The Gap

Now start squeezing the caulk into the gap, don’t worry if this is not perfect as we will shortly be coming back and tidying this up.

Apply Caulk To The Gaps

Apply Caulk To The Gaps

Step 3 – Fill The Gap Up Completely

Fill the entire skirting board corner with caulk before trying to make it look neat, that step will come next.

Caulk Applied To The Entire Gap

Caulk Applied To The Entire Gap

Step 4 – Push The Caulk Into The Gaps

Now comes the time to make the gap look neat. We will be using the most versatile tool of all, your finger. Use your finger to smooth the caulk into the gap. You can also use a damp cloth to help clean any excess off the skiritng board.

Push The Caulk Into The Gap Using Your Finger

Push The Caulk Into The Gap Using Your Finger

Finished

There we go, you can see the finished skirting board below.

The Gap All Caulked Up

The Gap All Caulked Up

As you can see this is quite a simple job and every level of DIY’er should be able to do this and achieve a really good finish. There is not much that can go wrong and even if it does then mistakes are easily remedied. So don’t be afraid to get stuck in and give this one a try!

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Wood by name, wood by nature. I am a fully qualified, time-served, award-winning joiner with an NVQ Level 3 in Carpentry and Joinery as well as an HNC in Construction. Beyond my joinery qualifications, I have also earned a degree in building surveying. I believe these qualifications make me perfectly positioned to provide expert advice on many different areas of DIY as well as share all of the tips I have picked up in over a decade working on building sites!