Tranås

A medium to coarse-grained red granite from northern Småland. Potassium feldspar makes up roughly two fifths of the rock and gives the red, while biotite adds the black points. It stands apart from the grey granites that dominate many cities.

Where to use it

As a hard silicate stone, Tranås is supplied for external paving, setts, kerbs, block steps, facades, interior flooring and interiors. For external surfaces we recommend a flamed, bush-hammered or blasted finish, which keeps its grip when wet. Thickness and format for paving depend on traffic load and bedding; we size them with your engineer against EN 1341 to EN 1343.

• external paving
• setts
• kerbs
• block steps
• facades
• interior flooring
• interiors

Finishes

• split face: the natural split, for walls, block steps and setts
• bush-hammered: evenly textured, the classic finish for squares and plinths
• flamed: rough and slip resistant, for external paving and steps
• honed: smooth and matt, shows the pattern, for interior floors
• polished: deepens the colour, for interiors and facade details
• brushed: softly textured and pleasant underfoot
• sandblasted: finely roughened and evenly matt

Origin and geology

Småland is the land of red granites and black diabase, with many quarries working since the early 1900s.

Granite, quartzite, gneiss and diabase are silicate rocks: hard, dense and unaffected by acids. They are the stones for facades, squares, setts and steps, wherever stone has to take frost, de-icing salt and traffic.

Supply and documentation

Zurface supplies Tranås as slabs, treads, setts, cladding and cut-to-size pieces, delivered to site. Every quote comes with the declaration of performance (DoP) and CE marking. See Specifying Swedish stone for standards and tender wording.