Topic
Wall filler
Base and finishing filler, drying, sanding and practical checks before painting or wallpapering.
Calculators
Guides
How to Choose the Right Primer
The right primer depends on the substrate and the next material, not just the word “universal” on the label. It can control absorption or help adhesion, but it cannot repair a weak wall.
Why Does Wall Filler Crack?
Filler cracking can be caused by shrinkage, a thick application, poor preparation or movement below the finish. Establish where the crack runs before repairing it.
How Long Does Wall Filler Take to Dry?
Surface dry, ready for sanding and ready for the next finish are different stages. Filler type, thickness, substrate and room conditions determine when to continue.
How Much Wall Filler Do You Need for a Room?
Wall filler quantity depends on the prepared area, average coat thickness, number of coats and the rate printed on the product. Calculate base and finishing compounds separately when needed.
Why Does Wall Filler Peel or Come Loose?
Peeling filler means that the bond to the substrate or earlier layer has failed. Remove unstable material, identify the cause and prepare a sound base before applying more filler.
How to Sand Wall Filler for a Smooth Finish
Sanding should refine a ready filler layer, remove ridges and blend small imperfections. It cannot replace levelling compound, correct deep hollows or repair a weak base.
Base Filler vs Finishing Filler: What Is the Difference?
Base filler addresses modest surface irregularities within its product limits, while finishing filler refines the surface for paint or thin wallpaper. The substrate and permitted thickness decide the sequence.
Can You Wallpaper Fresh Plaster or Filler?
Fresh walls are ready for wallpaper only when plaster or filler has dried, stabilised and been prepared for the chosen adhesive. A calendar date alone cannot prove readiness.