- Why should it be sanded?
- Be sure to match the sanding method to the wood
- method
- The right sandpaper
- Haftgrund, the convenient alternative
If the regular renovation painting of an arbor is due, the wood must first be professionally pre-treated. You think the necessary sanding would be child's play and possible without further thought? This is not the case, because there are a number of things to consider in this work as well.
It often makes sense to sand down a garden shed before repainting
Why should it be sanded?
In this step, you remove the weathered and contaminated layer of wood and roughen the surface. As a result, paints and varnishes adhere better to the substrate and do not flake off again with the old layer of varnish when it rains for the first time.
Be sure to match the sanding method to the wood
Heavily weathered, aged wood and a rough belt sander don't mix well. Splintering wood and even cracks can result from this rough treatment.
The following are recommended as gentle alternatives:
- delta sander
- steel wool
- sanding block
method
The rule of thumb is: the older the wood is, the more carefully and with a finer grain you should tackle the layers of paint.
Depending on the weathering condition of the wood, the delta sander is used on flat surfaces. Guide the machine evenly and do not stay in one place for too long, so that no bumps are sanded into the wood.
You have to grind the grooves of the joint pieces of tongue and groove by hand. Steel wool is suitable for this, as it adapts particularly well to the subsurface. Alternatively, you can use good old sandpaper to carefully remove the paint from the indentations.
The right sandpaper
At least two work steps are necessary to thoroughly remove all paint residues from the arbor. The coarse sanding is done with a 80 grit, the fine sanding with a 120 grit, better still 150 or 180.
Haftgrund, the convenient alternative
It is faster with a special primer that is applied over the entire surface of the old paint layers. Allow the layer to dry thoroughly, only then will the new coat of paint adhere reliably.
tips
If you have used types of wood that are resistant to blue stain when building the garden house, you can do without painting. The morbid charm of the weathered wood goes very well with natural gardens and can be used deliberately in garden design.