Les classifications de qualité des bois de terrasse
Les bois de terrasse n’ont pas la même classification que les bois intérieurs.
Les bois intérieurs exotiques se classent en grade ABC ou mix de deux ou trois lettres…. A étant le meilleur des bois.
Les bois de terrasses, donc de menuiserie ont des tolérances plus larges.
Il se classent selon le sytème américain en FAS, First and Second qui est la plus haute qualité de bois que l’on trouve sur le marché…
Selon chaque distributeur européen le grade officiel FAS sera présenté comme :
- Premier et second
- Prime grade
- Grade A
- Grade 1
- Premier choix
- Grade A
Intrinsèquement et selon la National Hardwood Lumber Association (NHLA) c’est selon les termes d’exportation un FAS.
Ce classement vaut pour toutes les essences exotiques de terrasse !
Découvrez sans plus attendre notre catégorie d'aménagements extérieurs !
"Ipe FAS Grade
There is no official standardised grading system for Ipe, however manufacturers generally adhere to the internationally recognised National Hardwood Lumber Association (NHLA) grading system.
The standard quality of Ipe commonly available throughout Europe is known as FAS grade.
It is also known and described by some suppliers as ‘First and Seconds’, ‘Prime Grade’, ‘No. 1 Grade’, ‘First Quality’, ‘First Grade’ and ‘A Grade’.
The actual grading rules as they appear in the aforementioned publication are set out below, however you will probably find our own description to be more useful and a more accurate representation of the actual product supplied by Silva Timber. This is because the grading rules describe the minimum standards for the grade."
The actual grading rules as they appear in the aforementioned publication are set out below, however you will probably find our own description to be more useful and a more accurate representation of the actual product supplied by Silva Timber. This is because the grading rules describe the minimum standards for the grade."
Sources les bois FAS
Et pour l'aspect technique du FAS :
"FAS
The FAS grade, which derives from an original grade 'First and Seconds', will provide the user with long, clear cuttings - best suited for high quality furniture, interior joinery and solid wood mouldings. Minimum board size is 6" and wider and 8' and longer. The FAS grade includes a range of boards that yield from 83.33% (ten-twelfths) to 100% clear-wood cuttings over the entire surface of the board. The clear cuttings must be a minimum size of 3" wide by 7' long or 4" wide by 5' long.
The number of these cuttings permitted depends on the size of the board, with most boards permitting one to two. The minimum width and length will vary, depending on species and whether the board is green or kiln dried. Both faces of the board must meet minimum requirements for FAS.
FAS ONE FACE (F1F) (COMMON GRADE FOR THE UK MARKET)
This grade is nearly always shipped with FAS.
The better face must meet all FAS requirements while the poor face must meet all the requirements of the Number 1 Common grade, thus ensuring the buyer with at least one FAS face. Often export shipments are assembled with an 80-20 mix (80% being the percentage of FAS boards and 20% the percentage of F1F boards). These percentages are strictly left to the individual Buyer and Seller agreement."
The FAS grade, which derives from an original grade 'First and Seconds', will provide the user with long, clear cuttings - best suited for high quality furniture, interior joinery and solid wood mouldings. Minimum board size is 6" and wider and 8' and longer. The FAS grade includes a range of boards that yield from 83.33% (ten-twelfths) to 100% clear-wood cuttings over the entire surface of the board. The clear cuttings must be a minimum size of 3" wide by 7' long or 4" wide by 5' long.
The number of these cuttings permitted depends on the size of the board, with most boards permitting one to two. The minimum width and length will vary, depending on species and whether the board is green or kiln dried. Both faces of the board must meet minimum requirements for FAS.
FAS ONE FACE (F1F) (COMMON GRADE FOR THE UK MARKET)
This grade is nearly always shipped with FAS.
The better face must meet all FAS requirements while the poor face must meet all the requirements of the Number 1 Common grade, thus ensuring the buyer with at least one FAS face. Often export shipments are assembled with an 80-20 mix (80% being the percentage of FAS boards and 20% the percentage of F1F boards). These percentages are strictly left to the individual Buyer and Seller agreement."