01 / Geological family
Origin and composition
- Geological family
- Igneous
- Origin and composition
- granite
- Origin
- Fredrikstad, Sarpsborg and Halden, Norway
- Appearance and identification
- warm grey to pink colours
Igneous rocks form when molten material solidifies. Cooling underground can produce visible crystals, as in granite; cooling at the surface can produce fine grains, cavities or porphyritic textures. Basalt, granite and many porphyries illustrate different compositions and structures. The commercial term granite can also include other geological rock types: a specification benefits from both the trade name and petrographic description.
02 / History and curiosities
History and curiosities
It is the granite used in the sculptures of Oslo’s Vigeland Park.
03 / Applications and design
Applications and design
Masonry, paving, dry-stone walls, bridges and sculpture.
Finishes and processes ↗04 / Technical interpretation
What to ask your supplier
A monumental precedent does not certify the size or performance of a modern supply.
05 / Care and maintenance
Care and maintenance
Remove dust and grit with soft tools, wash with a compatible neutral cleaner, then rinse and dry. Identify composition before using stain or scale removers: carbonate stones are acid-sensitive. Test every treatment in an inconspicuous area. An impregnator can reduce absorption but does not make a material waterproof or stain-proof.
Thoughtful cleaning, protection and maintenance ↗07 / Sources and further reading
