Information

Framesure LOSP H2 is seasoned, dressed, machine graded radiata pine, impregnated with permethrin to provide effective protection from borers and termites in above ground, interior framing applications.

Full sapwood penetration is achieved in this process to ensure total protection of the treatable zone. It gives peace of mind to builders, homeowners, and owner builders knowing that it is protected against termite and borer attack.

When compared against the high cost of other barrier systems which can easily be breached, Framesure LOSP H2 is a cost effective solution to structural termite and borer protection problems.

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The benefits of Framesure LOSP

• Cost effective, long term protection against structural termite damage which provides confidence in the structural integrity of the house structure.
• 25 Year Guarantee* - gives you peace of mind.
• Light and easy to handle makes it easy to work with, like untreated structural pine, and therefore saves time and money.
• Does not effect size specification which gives you a stable product that provides a quality finish.
• Does not effect structural grading which saves you time and money by not having to re-submit plans.
• Non-corrosive to nails and fixing plates which means no special fasteners are required.
• Conforms to Building Code of Australia and Australian Standard requirements, which reduces the risk of costly call-backs and ensures a quality product.
• Safer for users, owners and the environment because the active element is biodegradable and does not bio-accumulate.

What is Framesure LOSP H2 Treated Structural Timber?

It is graded structural timber that has been pressure impregnated with termite resistant preservative in an approved industrial treatment plant. The process drives the preservative into the cellular structure of the timber to provide protection against termites and other insects. The treatment is a Light Organic Solvent Preservative (LOSP) which has advantages that will be explained.

Does the treatment affect the strength of the timber?

No. An independent assessment by the Queensland Forest Service has shown that pressure treatment of Radiata Pine using light organic solvent preservative has no negative effect on the stiffness and strength of the wood.

Does the treatment increase the flammability of the wood?
No. An independent assessment by NSW State Forest found that once most of the treatment solvent has evaporated, LOSP treated timber is not any more fire susceptible than normal untreated timber and has the same allowable uses under
the Building Code of Australia with regard to fire rating.

How long will the protection last?
Tests on the effectiveness of permethrin have been conducted for over 20 years. These tests indicate that the treatment is very stable in the expected usage conditions and should last at least for the normal economic life of a building.

What do I do about end cuts?

Where a piece of timber is cut to length and the cut face will be left exposed then it is recommended
to seal the cut end with a suitable paint-on timber preservative ie XJ Timber Protective. In situations where the cut end is joined or butted closely to another piece of treated timber then it is not necessary to seal the cut end.

H2 treated timber should not be rip sawn, re-thicknessed or heavily planed as these actions may reduce or nullify the protection afforded by the treatment.

However, end cuts that remain exposed (not butted up against another piece of treated timber) on the slab level (bottom plate) or in sub-floor construction should be resealed with a suitable in-can preservative such as XJ Timber Protective.

Does the treatment affect the performance of nails and plates?

No. LOSP is non-corrosive and normal bright steel nails and plates are suitable. Once dry it does not affect nail or plate holding.

Does the treatment affect paint or adhesives?

In most situations H2 treated timber is not visible in the finished structure and is not painted. However, if painting is required, steps may need to be taken to avoid discolouration of the paint by the marker dye that is used. For more information contact woodlogic on (03) 9258 7600. Once dry the treatment should not affect adhesives including plasterboard adhesives.

How do I dispose of waste and off-cuts?

One of the benefits of the LOSP process is minimisation of waste by treating the timber after dressing and moulding. However use of the treated timber product will generally result in some waste.

Off-cuts and saw dust from treated timber are not hazardous waste. For normal domestic and trade users, dispose of waste through normal waste collection and disposal services. LOSP H2 treated timber wastes should be suitable for industrial incineration. The active constituent permethrin is biodegradable and does not bio-accumulate.

Treated timber off-cuts should not be used as domestic heating or cooking fuel. Treated off-cuts and saw dust are not recommended to be supplied for mulching or animal bedding.

What preservative is used?

The actual preservative component is a synthetic pyrethroid insecticide called permethrin. This material is used in a number of household, agricultural and even human use (head lice treatment) preparations. Permethrin has low toxicity to humans and to most non-target animal life. The minimum level required in the treated timber is 0.02% by mass based on the oven dry wood weight.

All timber preservatives are approved by the National Registration Authority as well as state based regulators.

Why use a solvent for the treatment?
For structural timber, treatment with a solvent based preservative may be the most cost effective, efficient and least wasteful means of producing the product. This is because the solvent treatment does not affect the moisture content, the strength or dimensions and hence the timber can be treated in final shape and form.

The solvent used is white spirits which is of low toxicity. White spirits and similar solvents are commonly used in household products such as dry cleaning fluid, paints, stains and as propellant in pressure cans.

Applications

What applications and conditions is Framesure LOSP H2 suitable for?
H2 treatment protects against termites and other insects only and not fungal decay or rot. It is approved for use in applications which can be described as 'interior or protected above ground' or Hazard Level 2 as defined in AS1604 - 1997 Timber - Preservative Treated - Sawn and Round. It is not suitable for situations that will be exposed to weather or dampness such as ground contact. Other treatments are recommended for these conditions.

Storage and Handling

How do I store H2 treated timber?
Like any dry structural timber, H2 treated structural timber should, as far as possible, be protected from rain and weather prior to construction. Storage areas should have good ventilation to minimise any odour or solvent vapours.

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