| Regularised (R) |
To keep floors, walls and ceilings level and consistent. |
| Graded (G) | All joist sizes are to strength class C I 6/24 to BS EN 338. |
| Treated | All Directly imported stock treated to hazard class 3 |
| Dried (D) | All
joists and studwork sizes up to 4.8 metre in length are kiln dried.
Wherever possible longer lengths are sourced from kiln dried stock. |