Nothing beats a great paint job, especially one you’ve done yourself. Give yourself the best chance at success by following these instructions.
Before you start make sure you have the right tools:
Before painting, remove and replace any rotten or decaying timber.
If your paintwork is already in good condition, a light but thorough sand should be sufficient. After sanding, the surface should be a flat sheen. To test if you need to strip the paint, cut with an “X” with a sharp knife and press 10cm of adhesive tape firmly across the middle of the cut. Remove the tape quickly. If any pieces of paint come with it, you will need to strip the loose paint off before applying the new top coat.
Any areas of peeling must be fully removed by sanding. Areas that are cracking should be filled with exterior grade filler and sanded before painting. For metal surfaces remove any rust by wire brushing or sanding the surface and use Dulux All Metal Primer before top coat. Plastic down pipes and spouting need a clean and a light sand before applying paint. Before painting wipe or brush down any area’s to remove any dust.
Fill any holes and cracks in your exterior surface with a high quality exterior filler. For weatherboard use or where movement is likely to occur. For exterior masonry use or ready mixed filler on large cracks.
Apply the Filler with a putty knife, overfilling to compensate for shrinkage as it sets.
Brush clean any surfaces, clearing away dirt and cobwebs.
Thoroughly wash the walls with to remove grease and dirt. A high-pressure cleaner and bristled brush can make the process easier.
Some common timbers contain high levels of a staining material called tannin. These tannins can migrate to the timber surface via moisture. If you are using tannin rich timber, be sure to wash the timber thoroughly with an appropriate tannin removing cleaner and apply an exterior top coat like with tannin blocking properties.
Masking before you paint makes the job faster and cleaner.
Use a good quality masking tape along any edges you don’t want to paint, including trims or windows.
Push the edges of the tape down firmly to ensure straight edges.
Remove the masking tape at a 45° angle before the paint dries completely. If the paint is too dry, the masking tape can rip the paint film when it is removed.
If the paint dries before the tape is removed, using a sharp blade, score the edge of the tape before removing so that it doesn’t pull paint away from the wall.
If you are covering a dark colour or a surface that’s never been primed or painted, you will need to use an undercoat. It can also provide a better coverage and hiding power than just applying extra top coats.