In addition to being an accomplished finishing carpenter, Johannes Petersen holds a Danish Journeyman ticket as a Bricklayer/Tile-setter. Examples of the expertise include:
- Bricklaying interior and exterior walls, arches, pillars, fences
- Rendering and other surface treatments with mortar products
- Concrete slabs, concrete stairs and steps
- Bedding mortar with slopes to drains
- Surface levelling
- Clay roof tiles
- Water proofing
- Tile setting, bathrooms, laundry rooms, backsplashes, entrance tiles, exterior tiles