Is the Pressure Washer you are looking at adequate for the tasks you need it for?
Quality or Quantity - PSI or Litres Per Min.
PSI is necessary to break the chemical bond between the surface and the stain. The stronger the bond the more PSI you will need to remove it.
Litres per minute is how we measure the flow of water. The greater the L/min the more area you are able to clean.

Buying a waterblaster is an investment and an expensive one at that, if you have any questions, doubts or just want some no pressure advice please get in touch. Contact Matt