One of the most significant differences between painting and old rendered and newly rendered walls lies in their condition. The older ones are most likely to have some defects in the form of blisters and cracks, crevices and holes here and there.
Therefore, the prep or repairing work before the painting will have to be more extensive in case of the older walls, than their newer counterparts.
The Prep Work – How it will be like?
Well, here is a summary of the typical glitches that you are likely to find on old rendered walls.
- Loose of Flaky Paints
- Cracks and Crevices
- Hollow, swelled or loose render
- Growth of moss, green and mould on the wall
- Improper finishing of the previous repairs
- Additions and alterations to walls and the house as a whole
- Old redundant nails and clips, brackets and screws
- Penetrated water and marks thereof and damps on the walls
Therefore, you see, each of these above needs to be addressed in a proper way before the painting is done.
Getting Rid of the Flaky Paint
One of the MUST DO things before render painting older walls is getting rid of the flaky paint. This is extremely important as otherwise; you will only be painting walls with an unsound surface. This means no matter how good is the quality of the paint you use, it will not last long.
Removal of the old paints
In order to get have the best render painting done, you need to have the old paints removed thoroughly. Only then you will have a perfect finish and this involves thorough removal of the coats after coats of old paints. A large variety of tools can be used for that and they range from scrapers to heat guns, paint strippers to brushes with steel fibres.
Filling in the cracks and crevices
These are common properties of the old walls, and they need to take care of – for obvious reasons. Use a good quality filler to fill in the gaps no matter how negligible and faint they are.
It is one of those challenges that demand the intervention of a professional company. They will use appropriate measures to get rid of these loose rendering and prepare the surface for fresh painting.
And then, the pros will obviously take care of the nails and brackets for adding perfection to the surface. They will also put maximum attention to the damps of the wall before getting on with the painting business.