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Super Flexible Smooth Finish Filler

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Fill the gaps between two surfaces with our Super Flexible Filler. Suitable for door frames, skirting, coving as well as any area that could move or shift.

  • Extremely smooth flexible finish
  • Fills gaps up to 6mm
  • Can be sanded
  • Paint over after an hour
  • Flexes and stretches so it won’t shrink or crack, giving you a long lasting repair
  • Suitable for plaster, stone, concrete and wood
  • Can be sanded
  • Won't shrink or crack
  • Paintable after 1 hour

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Use on the following surfaces
  • Plaster
  • Interior stone or concrete
    Interior stone or concrete
  • Interior wood
    Interior wood

1 colour available including:


How do I use it?


Make sure the surface is clean from grease and dirt


Can be applied direct to the surface

Recoat time

One hour

How to use Super Flexible Smooth Finish Filler

Before you start

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


  1. Push the filler firmly into the hole or crack. Leave it slightly raised above the wood to make sure the crack or hole is filled.
  2. Before the filler has dried, smooth over with a wet knife.
  3. After one hour, it will be dry and can be painted over.

If you are filling a wider hole, fill it in 6mm layers leaving one hour between each layer



Tools can be cleaned in warm, soapy water.


Technical specification

Usage: Interior plaster, stone, concrete and wood
Dry time: One hour
Recoat time: One hour
Colours: White
Finish: Matt
Durability: Flexes and stretches with the wood
Application: Can be applied directly to the surface
Base: Water
Size: 330g tube, 300ml cartridge
VOC Minimal

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
Super Flexible Smooth Finish Filler
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