ᐅ Painting a House – Should You Sand the Wood?

Hello,

we want to refresh the color of my parents’ bungalow and garage. The paint is about 30 years old now.
We plan to repair cracks using a facade crack sealer (a type of acrylic) and fix smaller damages in the plaster with silicate plaster.

The roof overhang is made of wood and should be painted a lighter color. Our question is whether all the wood needs to be sanded first or if it can be painted in its current condition. Of course, we would prefer if there is a way to paint the wood without sanding.

Small damages at the base of the building will be repaired with base plaster.

We are not expecting professional painter quality at the end of the day, so it does not have to be perfect. We just want to improve the appearance of the house with the resources we have.

Best regards

You can’t really tell from just a picture. To me, it looks like your wood has been treated with carbolineum. You could try smelling it to see if it has a tar-like odor. If it does, then that’s likely what it is.

I wouldn’t sand it off. It could contain harmful substances.

First, you should clarify what kind of wood treatment it is. After that, you can and must decide on the next steps. Sanding off carbolineum doesn’t make sense because it penetrates deeply into the wood. As you can clearly see in the picture, it holds up well.

Buchsbaum066 schrieb:

It looks to me like your wood was treated with Carbolineum. You could try smelling it to see if it smells like tar.

Unfortunately, we can no longer ask the person what it was treated with. However, it does not smell like tar. In our opinion, it was a wood preservative stain.

It's hard to say without knowing the paint used. I always have leftovers stored in the basement.