Spike Roller
A spike Roller is usually used when laying self levelling products such as epoxy flooring to eradicate air bubbles.
Sponging Off
Sponging Off 
A decorative effect achieved by applying a contrasting colour of wet glaze onto a base colour
then by dabbing the surface with a sponge to removing the coloured glaze.
See: See: Specification- Broken Colour Techniques -Tools and Equipment Special Techniques.
Sponging On
Sponging On 
A Multi-coloured finish achieved by dabbing a wet coat of paint or coloured glaze over a base colour with a sea sponge.
See: Specification- Broken Colour Techniques -Tools and Equipment Special Techniques.
Stabilising Solution
Stabilising Solution is a low viscosity clear or slightly tinted oil based coating for consolidating powdery surfaces ready for overcoating with water or oil based paints. 
Sticker
Shaping of moulding produced by a wood plane or Sticker machine. 
https://www.youtube.com/watch?v=gxSOzfjcPHU
Stipple
Dabbing the surface with a soft brush (stippling brush), (can also be made of rubber) whilst the coating is wet, to remove all brush marks. Also when broken colour or textured effects are being created.
