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Hairline Crack Smooth Finish Filler

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Small cracks seem to appear from nowhere. Our Hairline Crack Filler fixes them so that you'll be the only one who knows they were ever there. It fills cracks up to 5mm, so you can get them repaired with minimum hassle. It won't crack, so you won't have to do it again either.

  • For larger holes in walls we recommend using our Multi Purpose Smooth Finish Filler.
  • Won't shrink or crack
  • Fills cracks up to 5mm wide
  • Paint over in 1-2 hours
  • Comes in tubs or tubes
  • Paint over in 1-2 hours
  • Perfect for hair line cracks
  • Won't shrink or crack

Use on the following surfaces
  • Interior wood
    Interior wood
  • Plaster

1 colour available including:


How do I use it?


Up to 5mm gaps


Flat Scraper

Use it on...

Interior Plaster or Wood

How to use Hairline Crack Smooth Finish Filler

Before you start

Make sure surfaces are clean, dry and free from dust and grease.


Push the filler firmly into the hole or crack. You should leave the filler slightly raised above the wood to make sure the repair is filled. Before it dries, smooth it with a wet knife. Fill bigger holes above 5mm, use our Multi Purpose Wall Filler. Smooth over the filler with the Ronseal applicator or a wet knife before it dries.


After 1-2 hours you'll be able to redecorate.

Technical specification

Usage: Interior use. Plaster or wood.
Coverage: Fills cracks up to 5mm wide.
Dry time: 1-2 hours
Colours: White
Finish: Matt
Durability: Quickly fills cracks and leaves a tough finish
Application: Flat scraper

How to guides

Easy to follow steps to help you do a professional job on any DIY project.
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HOW-TO How to fill a hole in your wall
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HOW-TO How to choose the right filler for the job
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Ronseal Tin
Hairline Crack Smooth Finish Filler
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