The preparation
There are two options here:
- Thorough sanding of the wood surface.
- Applying primer, which you then simply paint over.
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When is the preparatory cut recommended?
You should do this rather time-consuming work when the surface is already weathered. The material is optimally prepared for the subsequent treatment with a lacquer. Even if you want to use a less pigmented glaze, you should sand the wood, so that the natural wood grain is visible again.
When is the application of primer sufficient?
Since this work is comparatively quick by hand, many prefer simple painting. However, weathered areas are only covered by the primer. Old paint residues that could flake off remain on the wood. Therefore, this method is only recommended if the house is still in very good condition.
How is it sanded?
In order for the subsequent coating to be easy to apply and to adhere well, there are a few basic things to consider:
- Sand carefully so that the wood does not crack or break. Better to work by hand at critical points.
- Usually several sanding passes are necessary to thoroughly remove all old layers of paint.
- 80 grit is suitable for pre-sanding, 120 grit, better even 180 grit, for fine sanding.
The new coat of paint
Regardless of whether you re-ground the house to brush or paint over the primer, the procedure remains largely the same:
- Always paint on a dry but cloudy day.
- Sweep or vacuum all surfaces well.
- After that, it may be sanded and vacuumed again.
- Mask off areas that should not be painted with painter's tape.
- Apply the primer or a primer.
- Paint or glaze at least twice.
Tips
How long the new coat of paint lasts does not only depend on the weather conditions. Wood stains only last about two years, with lacquers this renovation work is due about every four years.
