TIMBERS FOR FLOOR JOISTS AND BEARERS:

As a general rule no discrimination is made in regard to the species of hardwood used for this purpose, and mixed hardwoods (which may include any of the hardwoods listed) are the general rule Under the Timber Marketing Act this timber may not contain more than 25 per cent of its perimeter showing sapwood susceptible to Lyetid borers.

• ash, silvertop -- Eucalyptus sieberi
• blackbutt -- Eucalyptus pilularis
• blackbutt, New -- Eucalyptus andnewsk, England - E. carnpanutata
• box, brush -- Trestaffia conferta
• box, grey -- Eucalyptus hemiphloia
• brownbarrel -- Eucalyptus fastigata
• gum, rose -- Eucalyptus grandis
• gum, spotted -- Eucalyptus macutata
• gum, Sydney blue -- Eucalyptus saligna
• ironbark, grey -- Eucalyptus panicuiata
• ironbark, narrow -- Eucalyptus crebra leaved red
• ironbark, broad leaved -- Eucalyptus fibrosa red
• mahogany, red -- Eucalyptus resinitera
• mahogany, white -- Eucalyptus acmenioides
• messmate -- Eucalyptus oblique
• pine, cypress -- Callitris species
• stringybark, brown -- Eucalyptus capitalists
• stringybark, silvertop --Eucalyptus laevopinea
• stringybark, white -- Eucalyptus eugeniaides
• stringybark, yellow --Eucalyptus muellerana
• tallowwood -- Eucalyptus microcorys
• turpentine -- Syncarpia glomulifera
• woollybutt -- Eucalyptus longifolia

Special care should be taken to select straight-grained timber when using brush box (Tristania conferta) and turpentine (Syncarpia glomutifera).

TIMBERS FOR WALL AND ROOF FRAMING:

The same timbers as listed above may be used, with the addition of radiata pine (Pinus radiata).

TIMBERS FOR FLOORING:

For clear-finished floors, colour and wearing qualities are the criteria. The Timber Marketing Act prohibits the use of timber containing sapwood susceptible to Lyctid borers.

1. For clear-finished flooring:

• Blackbutt -- Eucalyptus pilulans
• box, brush -- Tristania conterta
• gum, manna -- Eucalyptus viminalis
• gum, river red -- Eucalyptus camaidulensis
• gum, rose -- Eucalyptus grandis
• gum, spotted -- Eucalyptus maculata
• gum, Sydney blue -- 0Eucalyptus saigna
• mahogany, red -- Eucalyptus resinitera
• mahogany, white -- Eucalyptus acmenioides
• messmate -- Eucalyptus oblique
• oak, tulip -- Herittera species
• pine, cypress -- Gallitris species
• stringybark, white -- Eucalyptus eugemoides, E gioboidea
• tallowwood -- Eucalyptus microcorys
• turpentine Syncarpia giomulifera

2. For covered floors:

For covered floors and in industrial applications where appearance is not important a mixture of hardwoods is often used. The softer timbers such as radiata pine, slash pine and hoop pine are also very suitable for covered floors.

3. For heavy duty floors (industrial or public buildings).

Brush box (Tristania conferta) is particularly suitable for the purpose. Also recommended are:

• gum, grey -- Eucalyptus punctata, Epropinqua
• gum, river red -- Eucalyptus camaldulensis
• the ironbarks -- For names, see under 'Floor joists'
• mahogany, while -- Eucalyptus acmeflioides
• tallowwood -- Eucalyptus microcorys
• turpentine -- Syncarpia glamulifera

TIMBERS FOR CLADDING:

Species used in this application need to machine well and have good paint holding characteristics. Sapwood susceptible to Lyetid borer attack is prohibited.

• box, brush -- Tristania comforts
• gum, spotted -- Eucalyptus macuJata
• gum, Sydney blue -- Eucalyptus saligna
  mahogany, red -- Eucalyptus resinitera

• mahogany, white -- Eucalyptus acmenioides

• 'pine, radiata -- Pinus radiata
• pine, cypress -- Callitris species
• stringybark, white -- Eucalyptus eugemoides, stringybark, yellow Eucalyptus muelierana
• tallowwood -- Eucalyptus micrecorys

Treatment with non-leachable preservative required for external use.

TIMBERS FOR SILLS:

Durability and ease of working are the prime requirements for sill timbers. The use of timber containing sapwood susceptible to Lyctid borer attach is prohibited.

• gum, spotted -- Eucalyptus macuiata
• mahogany red -- Eucalyptus resinitera
• mahogany, white -- Eucalyptus acmenioides
• stringybark, yellow -- Eucalyptus muellerana
• tallowwood -- Eucalyptus microcorys

TIMBERS FOR DECORATIVE PANELLING:

The main requirements are case of working and good appearance. Timber containing sapwood susceptible to Lyctid borer attack must not be used.

• ash, silver -- Fiffidersia schottiana
• birch, white -- Schizomeria ovata
• box, brush -- Tristania conferta
• coachwood -- Geratopetalum apetalum
• gum, manna -- Eucalyptus virminalis
• gum, rose -- Eucalyptus grandis
• gum, Sydney blue -- Eucalyptus saligna mahogany, brush -- Geissois bentharni
• mahogany, red -- Eucalyptus resinifera
• mahogany, rose -- Dysoxylum traseranum
• maple, rose -- Cryptocarya erythroxlyon
• messmate -- Eucalyptus oblique
• oak, tulip -- Argyrodendron species
• pine, cypress -- Callitris species
  pine, radiata -- Pinus radiata

TIMBERS FOR INTERIOR JOINERY:

Interior joinery required to be clear finished is selected for beauty of figure and colour and the ability to provide a smooth finish. For other interior joinery freedom from defects, medium density and ease of working are sufficient. The use of timber containing sapwood susceptible to Lyctid borer is prohibited by the Timber Marketing Act.

• alder, brown -- Ackame paniculata
• ash, alpine -- Eucalyptus delegatensis
• ash, silver -- Flindersia schottiana
• birch white -- Schizomeria ovals
• carabeen,' yellow -- Sioanea woolisii
• coachwood -- Geratopetalum apetaium
• gum, manna -- Eucalyptus viminalis
• gum, rose -- Eucalyptus grandis
• mahogany, brush -- Geissois bentharni
• mahogany, rose -- DysoxVium fraseranum
• maple, rose -- Gryptocarva erythrouryton
• messmate -- Eucalyptus oblique
• oak, tulip -- Argyrodendron species
• pine, radiate -- Pinus radiate
• pine, cypress -- Gallitris species
• sassafras -- Doryphora sassafras

TIMBERS FOR EXTERIOR JOINERY:

Timbers used for exterior furniture, trellises, gates etc, need to have a high durability. It is recommended that the use of timber containing sapwood be avoided, unless it is preservatived, with approved chemicals of appropriate concentration. Timbers recommended for sills could be considered, in addition, radiata pine and sassafras would be suitable if preservatived adequately.

Timber for external trim on dwellings needs to have good stability and freedom from surface defects which could affect the durability of finishes. Clear softwoods are usually demanded by builders. Clear radiata pine, preservative treated, is suitable. The imported western red cedar, redwood and Douglar are commonly used.

THESE CHARTS SUPPLIED BY THE FORESTRY COMMISSION 0F N.S.W.