R13
0,2 weight%
2,79 kg CO2-EQ
35,8 MPa
A natural and lightly textured surface in subtly varying light and warm grey tones.
The slate is quarried from Sæterfjellet, 18 km south of Oppdal. The natural surface is created when the stone block is split by hand along its natural layers without further treatment. All further adjustment of dimensions and thickness takes place locally at the quarry, ensuring consistent quality and a minimal climate footprint.
| min – max (mm) | min – max (mm) | min – max (mm) | |
| Length | Width | Thickness | |
| Rectangular, random lengths | 300 – 2500 | 100 – 1200 | 8 – 80 |
| Rectangular, fixed lengths | 300 – 2500 | 100 – 1200 | 8 – 80 |
| Square | 100 – 1500 | 100 – 1500 | 8 – 80 |
| Irregular | 400 – 3000 | 250 – 1500 | 5 – 130 |
| Slate wall bricks | 150 – 1500 | 25 – 450 | 25 – 200 |
| Natural edge | |
| Rough hewn | |
| Hewn | |
| Cut with slate scissors | |
| Sawn | |
| Brushed | |
| Honed |
| Tiles for walls and floors (indoors) | |
| Tiles (paving) outdoors | |
| Outdoor tiles | |
| Outdoor tiles for pedestal system floors | |
| Flagstones | |
| Stepping stones | |
| Stair treads | |
| Steps | |
| Massive terrain steps | |
| Countertops and fireplace slabs | |
| Slate wall bricks | |
| Natural dry stone wall bricks | |
| Slate wall bricks RÅ | |
| Slate wall bricks RUSTIKK | |
| Slate wall bricks REN | |
| Machine stone (quarry blocks) | |
| Roofing slate (flagstones) | |
| Façade panels | |
| Window sills |
| mm | |
| Thickness/depth (mm) | |
| Indoor floor/wall | 8 – 20 |
| Floor on pedestal (indoor/outdoor) | 20 – 25 |
| Outdoor floor (paving) | 10 – 80 |
| Foot traffic | 10 – 30 |
| Light vehicles | 20 – 60 |
| Heavy vehicles | 40 – 80 |
| Roof | 8 – 35 |
| Façade panels | 8 – 35 |
| Glued to steel/aluminium profiles | 8 – 12 |
| Overlapping slate with screws/hooks on steel/wood | 8 – 12 |
| Mechanically fixed from the back to profiles | 22 – 25 |
| Mechanically fixed with dowels into edge to profiles | 35 |
| Wall brick facade | Dybde |
| Dry stone wall – small slate bricks | 100 – 200 |
| Dry stone wall – large slate bricks | 150 – 300 |
| Hewn slate bricks for masonry | 100 |
| Hewn slate bricks for gluing | 25 |
| Thickness [mm] | Weight per m² [kg] |
| 10 | 27 |
| 12 | 33 |
| 15 | 40,5 |
| 20 | 55 |
| 25 | 67,5 |
| 30 | 81 |
| 40 | 108 |
| 50 | 135 |
| 60 | 162 |
| 10 – 20 | 50 |
| 20 – 30 | 67,5 |
| 30 – 40 | 100 |
| 40 – 60 | 135 |
| 60 – 80 | 190 |
| Minera wall bricks RÅ, RUSTIK, REN, depth 100 | 270 |
| Minera wall bricks RUSTIK, REN, depth 50 | 135 |
| Minera natural wall (dry wall), depth 50 – 120 | 250 |
| Minera natural wall (dry wall), depth 100 – 200 | 340 |
| Density | 2730 g/m3 |
| Water absorption [weight%] | 0,2 |
| Flexural strength [MPa] | 35,8 |
| Slip resistance | R13 |
| CO₂ emissions [eq. per m², t:12mm] | 2,79 |
| The mineral composition affects the technical performance, workability and appearance of the slate. Light Oppdal quartzite is a metamorphic quartzite consisting mainly of quartz-rich minerals and low levels of porous components. The table shows the most common minerals in the stone and their impact on the material properties: | |
| Quartz | 46% |
| Provides high wear resistance and compressive strength. Low water absorption and high mechanical strength. | |
| Mica | 34% |
| Mainly muscovite and biotite. Affects cleavage and surface. Can create glossy areas. | |
| Feldspar | 12% |
| Affects colour and surface variation. Good chemical resistance. | |
| Epidote | 6% |
| Occurs in small amounts. Minimal impact on structure and performance. | |
| Titanite | 2% |
| Occurs in small amounts. No noticeable impact on technical performance. |
| Petrography | |
| Quartzite | |
| Place of origin | |
| Oppdal, Norway | |
| Material description for façades and floors, outdoor and indoor: | |
| Light grey cleavable quartzite with natural layering providing a natural surface similar to Light Oppdal Restfonna | |
| Cleavable natural stone with distinct layers or zones in varying colours | |
| A variation in colour tones from tile to tile (or slate wall brick to slate wall brick) | |
| A mix of light and dark grey tones in the form of lines, waves or stripes on one and the same tile/bricks and across multiple tiles/bricks | |
| Can be supplied with a unique split (hewn) edge – fairly precise yet rustic and rough | |
| Flexural strength above 35 MPa | |
| Water absorption max 0.2 percent. | |
| Slip resistance minimum R13 | |
| Durable and long-lasting | |
| Long-term delivery reliability and documentation: | |
| EPD for life cycle assessments, CO₂ calculations | |
| Proven history of technical durability over time, despite patina development. | |
| Reusable, provided other functional requirements are fulfilled | |
| Long-term maintenance plans | |
| Future access to identical visual and technical qualities | |
| Routine testing and quality control | |
| CE marked | |
| Reference projects | |
| Access to technical support and consultants | |
| Other material requirements: | |
| Must be a natural material | |
| The material must reflect the project’s history and/or location | |
| See reference projects for desired expression |
Place of origin Oppdal, Norway Petrography Quartzite
Light Oppdal Restfonna natural surface: Light grey cleavable quartzite with natural layering providing a natural surface similar to Light Oppdal Restfonna.
We offer architects material samples, guidance, and inspiration for projects of all sizes. Explore our full product range, visit our slate quarry, or book a tailored presentation – either in person or online. Together, we’ll find the best solutions for your project.
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