If an arbor needs regular renovation painting, the wood must first be professionally pretreated. Do you think that the necessary sanding would be child's play and possible without any further considerations? This is not the case, because in this work there are various things to consider.
How do I properly sand my garden shed?
When sanding a garden house, you remove weathered layers of wood and roughen the surface for better adhesion of paint and varnish. Use a delta sander or sanding block and sandpaper with different grits for coarse and fine sanding.
Why should you sand?
In this step you remove the weathered and contaminated wood layer and roughen the surface. This means that paints and varnishes adhere better to the surface and the old layer of varnish does not flake off the first time it rains.
Be sure to match the sanding method to the wood
Heavily weathered, aged wood and a coarse belt sander do not mix well. Splintering wood and even cracks can be the result of this rough treatment.
The following gentle alternatives are recommended:
- Delta grinder
- Steel wool
- Sanding block
Procedure
The rule of thumb is: the older the wood, the more carefully and with finer grain you should approach the layers of paint.
The delta sander is used on straight surfaces, depending on the weathering condition of the wood. Guide the machine evenly and do not stay in one place for too long so that no unevenness is sanded into the wood.
You have to sand the cracks in the tongue and groove joints by hand. Steel wool is suitable for this as it adapts particularly well to the surface. Alternatively, you can use good old sandpaper to carefully remove the paint from the recesses.
The right sandpaper
In order to thoroughly remove all paint residue from the arbor, at least two work steps are necessary. The coarse sanding is done with a grit of 80, the fine sanding is done with a grit of 120, better yet 150 or 180.
Haftgrund, the convenient alternative
It's quicker with a special adhesive primer that is applied over the entire surface of the old layers of paint. Allow the layer to dry thoroughly, only then will the new coat of paint adhere reliably.
Tip
If you used wood species that are resistant to blue stain when building your garden house, you can avoid painting. The morbid charm of the weathering wood goes very well with natural gardens and can be used consciously in garden design.
