FREQUENTLY ASKED QUESTIONS
Do you sell to the public?
Unfortunately, no. We do, however, have retail partners that can assist in this regard. Click here to view a list of our retail partners.
Is the timber treated?
Yes – C.C.A. = Tanalith - C - Oxide Liquer - greenish in colour & components are:
Alternatively, TRI-BUTIL TIN OXIDE (T.B.T.O.) is used, which is clear in colour. e.g. used for laminated beams.
What is the difference between treating timber & varnishing timber?
Treatment – is a highly controlled process that takes place in a pressurized cylinder. CCA penetrates the timber cells to combat termites, wood borer attach and fungal decay.
Varnish – only weatherproofs the timber – top layer that needs continual maintenance.
The Treatment Process
Wood treatment at Tanalised© supplied treatment plants is a highly controlled process and takes place in a pressurized cylinder. The preservative solution is applied through vacuum pressure technology, which ensure that the wood preservative not only penetrates the wood but is retained in the wood fibre. This treatment is undertaken according to exacting national standards and regular inspections are undertaken by certification bodies such as the SABS and SATAS.
What size timber do you sell?
What are the various grades of timber?
S5, S7, S10
What determines the grade of timber?
Natural characteristics such as knots, wane, cracks, splits, checks etc.
What does the stamp on the timber mean?
TT = Thesen Sawmill
S • SABS • = processed to SABS standards
Hx = hazard class to which the timber has been treated i.e.
H2: INTERNAL, LOW HAZARD
Timber used internally or under cover
e.g. roof trusses, lam beams, ceiling
H3: EXTERNAL, MODERATE HAZARD
e.g. fencing, decking, fascias, garden furniture
H4: GROUND CONTACT, HIGH HAZARD,
e.g. playground structures, pergolas, carports
H5: FRESH WATER, HIGH HAZARD
Exposed to continued wetting
H6: MARINE, HIGH HAZARD
e.g. jetties, retainer walls
What does BXX mean?
Black Cross Timber (BXX) – non-structural timber.
Is finger-jointed timber as strong as solids?
Yes, the finger jointed section is always stronger than the solid area with defects such as knots.
What timber can be used to erect a carport?
Always work with an approved plan.
How much ceiling is required if the room is 18m2?
M2 (3 x 6 = 18m2) divide by width (0.102mm) = pieces – now divide by best suited lengths e.g. 3.0 mtrs = 59 lengths of 3.0.