F17 KD HWD

Do you require high-quality F17 KD HWD? In Melbourne’s northern suburbs, Oztimber Pty Ltd | Timber Supplies provides a comprehensive selection of timber supplies. We are available at all times to suit your needs.

F17 Hardwood finger-jointed timber is timber that has been kiln-dried. The most cost-effective alternative in F17 structural hardwood products is F17 hardwood. If you require F17 and are on a budget, finger jointed timber is the way to go. Because “appearance grade” hardwood has few, if any, faults, it is logical to assume that if it were visually rated, it would be of a high strength grade (F17 or greater). Our Kiln Dried Hardwood F17 is all solid timber with no gang-nailed joints. Tasmanian Oak is the species, and it’s made for structural applications like substrate flooring that require an F17 structural certification. So it is both softwood and hardwood.

For structural purposes, a stress grade classification of softwood lumber. Only softwoods are affected by F8 (Pinus, Picea, Larix, Araucaria, and Abies species). Timber strength groups are linked to stress grades.

What does F8 mean in terms of structural rating?

AS 2858 is a standard that specifies the requirements for Visually stress-graded softwood for structural purposes.

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If you’re going to employ lumber in a situation where the appearance

The flaws that are tolerated under the grading regulations may be objectionable if the timber is to be utilized in an application where appearance is essential. Ordering a higher grade of timber, such as F17, does not ensure a pleasing appearance because the smaller and more extensive flaws allowed under the higher grade may still be unsatisfactory.”Select” or “appearance” grade timber should be ordered to ensure a pleasing look. In this situation, select grade timber would be picked from “run of mill” production and supplied as a high-quality product with few of the species’ inherent flaws. The Select grade is more expensive. If the timber is to be coated with a clear finish or lightly stained, species that do not require treatment (and hence maintain the timber’s natural colour) should be ordered and supplied. The disadvantage of employing other species is that they may show more surface checking than Spotted Gum during seasoning. Spotted Gum can generally be supplied if treated and then coated with a clear finish, or gently stained because any superficial green stain will be dressed off, leaving only the sapwood green after dressing. If the timber is going to be painted, it’s usually fine to use treated Spotted Gum because the green color will be covered up (after the surface has been washed and brushed to remove surface chemicals that may affect paint adhesion).

Ranging from 3-12 per cent in common hardwood species to 3-5 per cent in common pine species. When log timber is chopped, it includes moisture. Shrinkage occurs as the timber dries out (seasons), and it varies by species. Where unseasoned timber is used, consideration must be made in design and construction to allow for shrinkage. Hardwood species with considerable shrinkages, such as Rose Gum (12%), should only be utilized in situations where structural adequacy is critical but shrinking isn’t a structural or cosmetic issue, such as roof battens in enclosed roof spaces (but not as battens on open verandahs or as main structural members). Other than strength, careful evaluation of the timber qualities necessary for specific applications can assist in guaranteeing that the timber delivered satisfies all of the purchaser’s requirements.

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Ordering by stress grade ensures that the timber will take the required load at the time of delivery, but it does not guarantee long-term durability where it is exposed to harsh conditions, such as in-ground posts, pergola timber, or verandah bearers and joists that will be wet and dry on a regular basis. A durability rating is assigned to common timber species, and it indicates how resistant the heartwood of the species is to fungal and insect (termite) attacks. The durability rating is based on in-ground field experiments of heartwood and is given as one of four classes. The range extends from Class 1 (25-50 years in the ground) to Class 4 (50 years in the ground) (1-8 years in-ground life). Sapwood that has not been treated is classified as Class I.

Use: Structural timber with a good appearance on the inside and out.

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