Definitions
| S4S | Smooth on 4 sides |
| S1S2E | Smooth 1 side and 2 edges |
| Rough | Saw texture direct from the Mill |
| Green | Contains moisture |
| Dry | Kiln-dried or Air-dried |
| Resawn | Light blade texture, between rough & smooth |
| RB&B | Reverse board and batten |
| T&G | Tongue and groove |
| ACQ | Alkaline Copper Quaternary, a water-based wood preservative that prevents decay from fungi and insects |
| KD | Kiln-dried |
| P&TS | Plugged and touch sanded, plywood |
| STK | Select tight knot |
| SPF | Spruce/Pine/Fir mixed species |
| MDO | Medium Density Overlay, aka Sign Board or Crezon. A paper covered fiberboard with one very smooth side often used for making signs |
| MDF | Medium Density Fiberboard |
| OSB | Oriented Strand Board |
| WP4 | A standard siding pattern |
| S4SEE | Smooth 4 Sides, Eased Edge |
| S3SE2E | Smooth 3 Sides, Eased 2 Edges |
| RS1S | Resawn 1 Side |
| OC | On Center, distance between centers of a repeating pattern |
| PVC | Polyvinyl Chloride |
| LVL | Laminated Veneer Lumber, an engineered lumber product |
| PSL | Parallel Strand Lumber, an engineered lumber product |
| LSL | Laminated Strand Lumber, an engineered lumber product. |
| LOSP | Light Organic Solvent Preservative, treatment used to protect against termite damage and decay, inside or outside above ground. |
Resource Documents
California Redwood Association
Redwood Lumber Patterns No. 17 (download PDF)
Pattern profiles of worked redwood lumber produced by the members of the California Redwood Association. These profiles and dimensions have been established to simplify the specifying and ordering of pattern lumber. All patterns shown are pictured as they are usually run through the matcher as viewed from the head of the machine looking toward the outfeed end.
