Choice of treatment
RECOMMENDED TREATMENT
| TIMBER PRODUCTS |
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| 1. Roof timbers (dry) | 1 |  |
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| 2. Roof timbers (risk of wetting) | 2 | |
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| 3. Tiling battens | 2 | |
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| 4. Barge boards, fascias, soffits | 3.1 | |
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| 5. Timber frame components | 2 | |
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| 6. Frame sheathing – plywoods | 2 | |
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| 7. External cladding | 3.1/3.2 | |
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| 8. Battens for external cladding | 2 | |
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| 9. First floor joists | 1 | |
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| 10. Ground floor joists | 2 | |
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| 11. Internal joinery/doors | 1 | |
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| 12. External joinery/doors | 3.1 | |
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| 13. Sole plates above dpc level | 2 | |
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| 14. Decking out of ground contact | 3.2 | |
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| 15. Decking in ground contact | 4 | |
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| 16. Fence posts | 4 | |
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| 17. Fence rails/panels | 3.2 | |
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| 18. Garden products: garden sets, pergolas, garden sleepers, gazebos, playground equipment, leisure wood, arches, planters, fences, landscaping products. | 3.2 / 4 | |
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| 19. Transmission poles | 4 | |
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| 20. Packaging/pallet timbers | 3.2 | |
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| 21. Cedar shingles | 1 | |
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| 22. Cooling tower timbers | 1 | |
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* Exterior woodwork should be subsequently protected with a maintained and appropriate surface coating.
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