- Protection against water penetration
- Heat resistance
- Weather resistance
The barbecue chimney is usually only slightly protected outdoors. That is, it is exposed to both temperature fluctuations and weathering. Accordingly, the surface must be made unassailable with its large pores for weathering. Commercially available facade paints, as used in the house facade, are suitable for this purpose.
Protection against the ingress of water
It is even more important that no water can penetrate into the joints. In frost, the moisture that has penetrated could freeze and blow up the concrete.
This raises the same problem with a barbecue chimney as it does with a conventional facade: it has to be fully protected from moisture ingress.
In the outdoor area of the barbecue fireplace practically no temperatures above 60 ° C arise. This results in no problem here.
However, that looks different in the interior. In any case, only heat-resistant paints and coatings should be used. Such paintings are usually expensive but absolutely necessary.
For outdoor weather protection, ordinary painting is not sufficient. Facade paint is a possibility, but may allow ingress of water under certain circumstances.
The better option is therefore plastering the chimney with ordinary cement plaster. This also includes the visible large pores of the grill fireplace. Joints should be mortared. Fass Over it facade color can be deleted. If the façade paint is renewed regularly, the look of the fireplace stove will be preserved for a long time.
In terms of heating technology, plastering is no problem due to the comparatively low outdoor temperatures. On the inside, however, only special, heat-resistant coatings may be used.
If the barbecue is also to be used as a fireplace in freezing temperatures, special metal internal constructions in addition to the heat-resistant coating are necessary.
Tips & TricksThe simple cement plaster for the barbecue chimney can also be easily produced by yourself. As a rule, a spreadable mixture of sand, cement and water is sufficient to coat and coat. The first coat of façade paint should be diluted but after the plaster has dried.