They are produced in accordance with EN 14080:2013, EN 14081 European certifications and the GL24h and GL28h strength standards.
Segezha Group produces glued timber of visual and industrial quality. These grades are characterised by their front surfaces quality.
The criteria are based on the as-delivered surface quality. Appropriate storage and assembly of timber after delivery shall be provided by the customer. Changes in the above criteria are possible due to climatic conditions as timber is a natural building material.
| Criteria | MIXED QUALITY | VISUAL QUALITY |
|---|---|---|
| Healthy knots | Admissible without restrictions | Admissible without restrictions |
| Fallen ungrown knots | Admissible without restrictions |
Admissible with a diameter of up to 5 mm, a length of up to 30 mm on the edges, no more than 1 per 2 sawn timber |
| Knots surrounded by bark | Admissible | Admissible |
| Resin pockets | Admissible | Admissible |
| Wormhole (surface) | Up to 3 are Admissible per 1 sawn timber |
Not admissible |
| Serrations | Admissible | Admissible |
| Cracks over 1 mm wide | Admissible | Not admissible |
| Blueness | Admissible without restrictions | Admissible up to 5% of visible surface |
| Chemical stains | Admissible | Admissible up to 10% of visible surface |
| Ingrown bark | Admissible without restrictions | Admissible up to 50 mm |
| Rot (hard surface) | Admissible | Not admissible |
| Mechanical damage | Admissible | Admissible up to 5 mm wide; up to 50 mm long; up to 2 pieces per part |
| Plugged or "socketed" knots and defects | Admissible | Not admissible |
| Milling quality | Shaping dents are admissible up to 2 mm deep | Shaping dents are admissible up to 1 mm deep |
| Hit or miss | Roughness (partial hit or miss) is admissible | Not admissible |
