Why is it important to know the application of previous paints on surfaces?

This is one of the biggest pitfalls when performing DIY painting jobs because the base of the paint (oil or water) will have an impact on what you apply afterwards.

Maz Nassimi, Founder and owner of DuPaint, says this is extremely important if you want a job to last and have a quality finish.

“It is very important to know what type of paint was used prior to painting over it,” he said.

“Whether it is a wall, door or any other surface, if you don’t know what type of paint was used you could seriously undermine the job.”

Some of the pitfalls of not knowing the type of paint used previously include:

  • peeling
  • cracking
  • mould issues (if they existed previously)

If you choose to paint over an existing wall, for example, and aren’t sure of the type of paint used before then you run the risk of having peeling problems within six to 12 months. Alternatively, you could experience cracks and gaps in the paint which will more than likely lead to the job being redone within a year.

“What we do is identify the type of paint previously used and then apply the appropriate undercoat or sealer,” Nassimi said of the DuPaint team.

“This is especially important for surfaces with mould as we have to use special products to remove it and the stain left behind.

“If this procedure isn’t performed properly then the mould is likely to come back despite the application of two to three coats of paint.”