Filling a space left by Skirting Boards

Hi, I recently removed my skirting boards to make space for built-in wardrobes. Behind them was a space, then the brick. I want to make this part of the wall flat. What is the best way to do so?

Asked by Alexander on 7th Oct 2025
Expert Trade Answers
"Hello mate
You can buy a bag of bonding
And use to fill the skirting void
Leaving a flat and flush surface for new wardrobes to butt up against 👍🏻"
Answered on 7th Oct 2025 - Member since Mar 2025 - report
"Grab yourself a bag of thistle hardwall as it’s easier to work with if you don’t have much experience. Cut a nice straight line on the existing plaster above and remove the excess below the line.

Get yourself some pva glue, mix it in a bucket with water, then apply it by brush to the brickwork removing any dust and creating a bond, leave the pva to absorb for 5 minutes then trowel on the thistle hardwall which you have already mixed up in a bucket prior at a consistency similar to ice cream from the ice cream man 👌👍 trowel the hardwall as it hardens, scrape the excess of the above plastered/painted surface m, use a brush and water to trowel smoothe level with the surface above keeping the above surface wet whilst troweling , using the excess that you trowel off to fill any hollow points to create a completely flat surface and make sure you use the trowel vertically whilst trowelling so it’s level applying most of the pressure to the top of the trowel scraping on the surface above so the new plaster just follows suite. Now your a qualified plasterer haha good luck"
Answered on 7th Oct 2025 - Member since Nov 2023 - report
"There is a couple of solutions to your problem you can use plaster board if the void is deep enough thistle bonding or the cheaper solution is sand and cement it depends on how confident you are in your own abilities
But what ever you use just rule of the existing wall with a straight edge to get it niceand flush"
Answered on 7th Oct 2025 - Member since Jan 2025 - report
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