THERMOWOOD TMT LUMBER GRADING DEFINITIONS Tantimber / TMT Lumber Grading Definitions TANTIMBER TMT LUMBER GRADING DEFINITIONS Tantimber Ash Lumber Origin: North America Botanical Name: Fraxinus Americana Grade: FAS (First & Selects) For more information see American Hardwood Grading Classifications book. Moisture: 4 - 7% Process: Thermowood (TMT) Process Temperature: 360°F (interior) - 410°F (exterior) Features: Thermowood Lumber falls into the semi-finished category, and should not be regarded as fully finished wood. Therefore, things must be considered. Due to the Thermowood process, which reduces the moisture of the wood, there tends to be a 5-7% reduction in the width and thickness of each board. Therefore, all measurements should be considered as nominal. Because of the temperatures involved with the thermal modification process, the color of the wood may be affected. There may also be color differences between each board as well. These differences are not considered to be defects. Some warping can occur along the length of the boards Since the FAS grading is defined by the National Hardwood Lumber Association (NHLA), knots, wane and end splitting can be found on some boards. THICKNESS (in) WIDTH (in) LENGTH (ft) 1, 1 ¼, 1 ½, 2 4, 5, 6 6 - 12, 3 - 14 optional TAN Grade Classification: Because of requests from our customers, we have developed a special lumber classification (TAN Grade). This classification is designed to maximize yield and minimize losses due to TMT ash lumber production. Utilizing the TAN Grade classification system, the raw wood passes through a multistage quality control process, as well as an inspection of all four sides prior to the final shaping the wood. A higher yield is possible due to the elimination of various defects such as splits, knots, wane, etc. The result is that Tantimber lumber, with its reduced width and thickness, is ready to be used in construction. The TAN Grade classification provides for lumber that is completely free from defects on one side with high production yields, and thus meeting the specific needs of our customers. 1 Tantimber / TMT Lumber Grading Definitions TANTIMBER TMT LUMBER GRADING DEFINITIONS Tantimber Iroko Lumber Origin: Cameroon, Africa Latin Name: Milicia Excelsa (Chlorophora Excelsa) Grade: FAS Moisture: 4 - 7% Process: Thermowood (TMT) Process Temperature: 365°F (interior) - 390°(exterior) Features: Thermowood Lumber falls into the semi-finished category, and should not be regarded as fully finished wood. Therefore, things must be considered. Due to the Thermowood process, which reduces the moisture of the wood, there tends to be a 5-7% reduction in the width and thickness of each board. Therefore, all measurements should be considered as nominal. Because of the temperatures involved with the thermal modification process, the color of the wood may be affected. There may also be color differences between each board as well. These differences are not considered to be defects. Some warping can occur 1along the length of the boards Since the FAS grading is defined by the National Hardwood Lumber Association (NHLA), knots, wane and end splitting can be found on some boards. THICKNESS (in) WIDTH (in) LENGTH (ft) 1 - 2 4 - 5 7 - 12 TAN Grade Classification: Because of requests from our customers, we have developed a special lumber classification (TAN Grade). This classification is designed to maximize yield and minimize losses due to TMT ash lumber production. Utilizing the TAN Grade classification system, the raw wood passes through a multistage quality control process, as well as an inspection of all four sides prior to the final shaping the wood. A higher yield is possible due to the elimination of various defects such as splits, knots, wane, etc. The result is that Tantimber lumber, with its reduced width and thickness, is ready to be used in construction. The TAN Grade classification provides for lumber that is completely free from defects on one side with high production yields, and thus meeting the specific needs of our customers. 2 Tantimber / TMT Lumber Grading Definitions TANTIMBER TMT LUMBER GRADING DEFINITIONS Tantimber Tulipwood Lumber Origin: North America Botanical Name: Liriodendron Tulipifera Grade: FAS (First & Selects). For more information, see our American Hardwood Grading Classification book.. Moisture: %4-7 Process: Thermowood (TMT) Process Temperature: 210°C Features: Thermowood Lumber falls into the semi-finished category, and should not be regarded as fully finished wood. Therefore, things must be considered. Due to the Thermowood process, which reduces the moisture of the wood, there tends to be a 5- 7% reduction in the width and thickness of each board. Therefore, all measurements should be considered as nominal. Because of the temperatures involved with the thermal modification process, the color of the wood may be affected. There may also be color differences between each board as well. These differences are not considered to be defects. Some warping can occur along the length of the boards Since the FAS grading is defined by the National Hardwood Lumber Association (NHLA), knots, wane and end splitting can be found on some boards. THICKNESS (in) WIDTH (in) LENGTH (ft) 1, 1 ¼, 1 ½, 2 4, 5, 6 6 - 12, 3 - 14 optional TAN Grade Classification: Because of requests from our customers, we have developed a special lumber classification (TAN Grade). This classification is designed to maximize yield and minimize losses due to TMT ash lumber production. Utilizing the TAN Grade classification system, the raw wood passes through a multistage quality control process, as well as an inspection of all four sides prior to the final shaping the wood. A higher yield is possible due to the elimination of various defects such as splits, knots, wane, etc. The result is that Tantimber lumber, with its reduced width and thickness, is ready to be used in construction. The TAN Grade classification provides for lumber that is completely free from defects on one side with high production yields, and thus meeting the specific needs of our customers. 3 Tantimber / TMT Lumber Grading Definitions TANTIMBER TMT LUMBER GRADING DEFINITIONS Tantimber Pine Lumber Origin: Scandinavia Botanical Name: Pinus Sylvestris Grade: A Grade Moisture: 4 – 7% Process: Thermowood (TMT) Process Temperature: 410°F Features: Thermowood Lumber falls into the semi-finished category, and should not be regarded as fully finished wood. Therefore, things must be considered. Due to the Thermowood process, which reduces the moisture of the wood, there tends to be a 5- 7% reduction in the width and thickness of each board. Therefore, all measurements should be considered as nominal. Because of the temperatures involved with the thermal modification process, the color of the wood may be affected. There may also be color differences between each board as well. These differences are not seen as defects. Some warping can occur along the length of the boards Consistent with the A Grade classification, common defects such as sound knots, surface and end- splits are sometimes present. Thermowood Pine is wing-knotted as a natural characteristic of the wood.. THICKNESS (in) WIDTH (in) LENGTH (ft) 1, 1 ¼, 2 4, 5, 6 10 - 19 TAN Grade Classification: Because of requests from our customers, we have developed a special lumber classification (TAN Grade). This classification is designed to maximize yield and minimize losses due to TMT ash lumber production. Utilizing the TAN Grade classification system, the raw wood passes through a multistage quality control process, as well as an inspection of all four sides prior to the final shaping the wood. A higher yield is possible due to the elimination of various defects such as splits, knots, wane, etc. The result is that Tantimber lumber, with its reduced width and thickness, is ready to be used in construction. The TAN Grade classification provides for lumber that is completely free from defects on one side with high production yields, and thus meeting the specific needs of our customer 4 .