Using a wire brush or scraper

Applying more paint directly

Washing with cold water only

Covering with wallpaper

To make it heavier

To create a smooth and even surface for better paint adhesion

To increase the temperature of the wood

To add moisture to the wood

Sandpaper

Filler or putty

Water

Paint thinner

$$0^\circ$$ C to $$5^\circ$$ C

$$10^\circ$$ C to $$25^\circ$$ C

$$30^\circ$$ C to $$40^\circ$$ C

$$-5^\circ$$ C to $$0^\circ$$ C

Washing with sugar soap

Wiping with a damp cloth

Applying oil to the surface

Using a vacuum cleaner to remove dust

To make the paint dry faster

To improve paint adhesion and provide a uniform base

To increase the weight of the wall

To add a glossy finish

Paint immediately to seal in the moisture

Allow the surface to dry completely

Apply extra paint for better coverage

Use sandpaper to remove the dampness

40 grit (very coarse)

120 grit (medium-fine)

400 grit (very fine)

10 grit (extremely coarse)

Apply paint directly

Remove all dust with a tack cloth or vacuum

Wet the surface with water

Heat the surface to $$50^\circ$$ C