ARE YOU PAINTING OVER AN OIL-BASED OR WATER-BASED PAINT?
This is a question we often ask our customers – but how do you tell if your existing paint is oil- or water-based, and why is it important? Well if you want your paint to stick, it’s important to know! A water based paint applied directly to an oil based paint will simply scratch off, as there is nothing for the acrylic paint to hold on to.
So how do you tell if the existing paint is water- or oil-based? Apply methylated spirit to a rag and rub the paint surface vigorously. A water based paint will leave a residue on the rag – using a rag which contrasts in colour to the paint will make it easier to see the results. An oil based paint will not be removed.
If the coating turns out to be oil-based then a primer is required to enable a water-based paint to adhere successfully.
WHERE DO I START PAINTING A ROOM?
Most professional painters will paint door frames and trims first, then the ceiling, and finally the walls. There are couple of reasons why they find this a more efficient way to work.