1 / 28

THERMORY PINE GRADING

THERMORY PINE GRADING. 2013 WWW.THERMORYUK.CO.UK. Thermory Pine – Visual Grading Rules for Natur. Wood qualities / Defects Sound Knot Splay knot Edge knot and Arris knot Knot cluster Pin knot Black and Dead knot Broken knot Loose knot and Hole Rotten knot Bark ringed knot

waldo
Download Presentation

THERMORY PINE GRADING

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. THERMORY PINEGRADING 2013 WWW.THERMORYUK.CO.UK

  2. Thermory Pine – Visual Grading Rules for Natur • Wood qualities / Defects • Sound Knot • Splay knot • Edge knot and Arris knot • Knot cluster • Pin knot • Black and Dead knot • Broken knot • Loose knot and Hole • Rotten knot • Bark ringed knot • Resin pocket • Heart wood and Heart • Rot • Log blue stain and Mould • Insect holes • Wane • Top rupture • Bark pocket and Scar • Shake • Cup and Twist • Spring and Bow • Hit & Miss • Grading process • Visual Grading Rules • General characteristics Thermory Pine

  3. Grading Process Grading is done over 3 stages: • When kiln dried raw material arrives to factory • After the boards are split, through cut etc just before the thermo treatment phase • Final grading is after thermo-treatment and after profiling (planning). This is when the “face” of the board is choosen. Thermory Pine

  4. Visual Grading Rules for Thermory Pine • FACE • Graded face - Smooth, without visible mechanical damage from tools. No Hit & Miss allowed • Ungraded face - Cutting marks max 2mm width allowed • KNOTS • Bark ringed knot - Allowed 5 knots within 2 metres. Maxium knot size is 20% of piece’s width • Black & Dead fixed knots - Allowed, at face area maximum size 20% of piece’s width, at edges maximum size 50% of piece’s thickness • Broken knot - Allowed when breakage is invisible after installation. Small cracks inside healthy knots are allowed • Edge and Arris knot - Allowed in all sizes, when solid • Knot cluster - Allowed, when knots’ within cluster are solid • Loose knot and hole - Not allowed, if loose knot or hole is visible in usage • Pin knots - Sound < 10mm are allowed • Rotten knot - Not allowed • Sound knot size - Solid sound knots allowed max. ½ of the width • Splay knot - Sound knot rules apply to sound splay knots Impregnated Pine

  5. Visual Grading Rules continued • OTHER CHARACTERISTICS • Bark pocket and Scar - 1 bark pocket and scar (L 120mm x W 20mm) within 2 metres. Must be solid on top. • Heart wood and Heart - Allowed, heart is a natural quality for sawn heart wood pine • Insect holes - Not allowed • Mould - Not allowed • Resin pocket - 3 resin pockets (W 10mm x L 50mm) allowed within 2 metres • Rot / decay - Not allowed • Shake / Surface crack - Shallow and short allowed. Through and ring shake not allowed. Continuous cracks not allowed. Maximum area of breakage is 50sqmm. • Top rupture - Allowed, maximum 50% out of piece’s width • Wane - Not allowed • Cup - Allowed 2% of piece’s width within 2 metres • Twist - Allowed 10% of piece’s width within 2 metres. Permitted as long as the board can easily be mounted • Spring - Allowed 4 mm within 2 metres • Bow - Allowed 15 mm within 2 metres • A maximum of 3% of pieces within a pack can be of a lower quality than Natur. • THE FOLLOWING PHOTOS ARE NOT ALL OF THERMORY PINE. Impregnated Pine

  6. General knot types Source: RT-kortti Sound knot Dead knot Barkringed knot Black knot Arris knot Splay knot Spike knot Knot cluster Thermory Pine

  7. Sound knot Allowed to maximum of half the board width Thermory Pine

  8. Splay knot Sound knot rules apply also to sound splay knots Thermory Pine

  9. Edge and Arris knot Allowed in all sizes, when solid Edge knot Arris knot Thermory Pine

  10. Knot cluster & Scattered knots Allowed, when knot’s within cluster are solid Knot cluster Scattered knots Thermory Pine

  11. Pin knot Pin knots = sound knots <10 mm are allowed Thermory Pine

  12. Black and Dead knot Allowed, at face area maximum size 20 % of piece’s width, at edges maximum size 50 % of piece’s thickness. Black knot Dead knot Thermory Pine

  13. Broken knot Allowed when breakage is invisible after installation. Small cracks inside healthy knots are allowed. Hole Thermory Pine

  14. Loose knot and Hole Not allowed, if loose knot or hole is not invisible in usage! Impregnated Pine

  15. Rotten knot Not allowed! Thermory Pine

  16. Bark ringed knot Allowed 5 knots within 2 metres. Maximum knot size is 20 % of piece’s width. Thermory Pine

  17. Resin pocket 3 resin pockets (width 10 mm x lenght 100 mm) allowed within 2 meters. Thermory Pine

  18. Heart wood and Heart Allowed, heart is a natural quality for sawn heart wood pine Thermory Pine

  19. Rot Not allowed! Thermory Pine

  20. Log blue stain and Mould Not allowed! Log blue stain Mould Mould Mould Thermory Pine

  21. Insect holes Not allowed! Thermory Pine

  22. Wane Not allowed! Thermory Pine

  23. Top rupture Allowed, maximum 50 % out of piece’s width Thermory Pine

  24. Bark pocket and Scar 1 bark pocket and scar (L 120 mm x W 20 mm) within 2 meters. Must be solid on top. Scar Bark pocket Thermory Pine

  25. Shake and Surface cracks Shallow and short allowed. Continuous cracks not allowed. Maximum area of breakage is 50sqmm. Through & ring shake not allowed! Impregnated Pine

  26. Cup and Twist Cup: Allowed 2 % of piece’s width within 2 meters. Twist: Allowed 10 % of piece’s width within 2 meters, as long as board can be easily mounted. Twist Cup Thermory Pine

  27. Spring and Bow Spring:Allowed 4 mm within 2 meters. Bow:Allowed 15 mm within 2 meters. Spring Bow Thermory Pine

  28. Hit & Miss Not allowed! Thermory Pine

More Related