Exterior LOSP treated pine flooring

more environmental-friendly, don't change wood natural color, Vacsol Azure treated flooring - details see: https://www.buildingsupplieshub.com/exterior-losp-treated-pine-flooring-10098475
Type: Anticorrosive WoodsPlace of Origin: Shanghai China (Mainland)Brand Name: dabutongPreservative Type: LOSP(light organic solvent preservative)
Timber Type: Pinespecies: US southern pine  
Exterior LOSP treated pine flooring
contact supplier for Exterior LOSP treated pine flooring


LOSP Vacsol Azure treated floor for decking, LOSP is eco-friendly and nontoxic compared to CCA/ACQ

Material: US southern pine

treatment: Losp treatment (light organic solvent preservative)

surface: slot design against slip or flat surface

lifespan garantee: 20 years

notice: LOSP is only for finished product. In others words, LOSP treatment is the last procejure.

Species suitable for LOSP:
1. softwood: US southern pine, monglica, Scott pine, German red pine, radiata pine etc. Southern pine is the best for LOSP because of its excellence for penetration, which allows more preservative inside.
2. hardwood: merbau
3. dose level
  • H1.1 and H1.2 for timber framing
  • H2 (Australia only) for timber framing
  • H3.1 for use outdoors out of ground contact where there is no possibility of water entrapment such as fascia and weatherboards.
  • H3.2 for use outdoors out of ground contact but with a risk of water entrapment such as joists and decking.
LOSP common treated flooring size for reference:
US southern pine38*89
US southern pine38*140
US southern pine25*89
US southern pine25*140
pinus silvestris28*95
pinus silvestris28*120
pinus silvestris45*95
pinus silvestris45*120
pinus silvestris45*145
pinus silvestris21*95
Russian mongolica21*95
Russian mongolica45*95
Russian mongolica45*120
Russian mongolica45*145
LOSP treated US southern pine flooring

LOSP Vacsol Azure treated floor for decking:

LOSP Vacsol Azure computerized production facility

What are Light Organic Solvent Preservatives (LOSPs)?

Light Organic Solvent Preservatives (LOSPs) are preservatives that contain insecticides for internal use, and combinations of fungicides and insecticides for external use, and sometimes water repellents. LOSPs may also contain mouldicides. All of these preservative components are incorporated in a solvent carrier such as white spirit.

LOSPs are used to protect timber against insects, including termites, and decay, though they are not intended for use in ground-contact situations. In addition, LOSPs can provide a degree of weather protection when water repellents have been incorporated. LOSPs are preservatives that leave the treated timber dry after treatment, and do not cause it to swell and distort in any way.

LOSPs have traditionally been colourless, and although it is now possible to obtain green and brown-coloured LOSPs, such colour that is imparted to the timber by these coloured variants is short-term. Also, it should be noted that some of the dyes used in coloured LOSPs might migrate through paint films that are later applied to the surface of the LOSP-treated timber.

The colour or general visual appearance of a piece of treated timber is not a reliable guide for identifying the actual preservative used. Users should check the marking (or branding) on the treated timber, or ask the supplier if in doubt. For example, some LOSP is tinted green, but this should not be confused with the green copper chrome arsenic (CCA) used in ground contact applications, for which LOSPs are unsuitable.

LOSPs and other preservatives like CCA are intended to provide adequate protection to a wide range of commodities but they may not necessarily offer directly equivalent performance over the broad range of applications. Most types of preservative-treated timber are subject to the effects of weathering when used in exposed outdoor situations. Any timber product used in such a situation will benefit from the application of surface coatings that provide additional protection against moulds, discolouration, checking and dimensional movement. LOSP-treated timber is generally more prone to these affects than CCA-treated timber, and it should always be given a protective coating after treatment.

Where are Light Organic Solvent Preservatives used?

Light Organic Solvent Preservatives (LOSPs) are used for high value building components such as external joinery, e.g. windows, and for protecting house framing against termites (H2 level). The commodities treated include windows, doors, external joinery, house frames, cladding, outdoor garden furniture, feature fences, etc. In recent times, a range of engineered timber products including laminated posts and beams are also being treated with LOSPs. A number of timber species are used for these commodities, mainly radiata and slash pine of local origin, but also imported species from north America and south east Asia, i.e. western red cedar, oregon, and meranti.

Post-treatment Care for Light Organic Solvent Preservatives

LOSP-treated timber should never be used in ground contact. Furthermore, as with any treated timber product used in weather-exposed applications, a post-treatment protective coat should be applied, such as paint or a similar film-forming finish. This is essential for optimum performance of LOSPs. Note that some manufacturers guarantee the performance of their LOSP-treated timber only if such post-treatment applications are made. For best results, the post-treatment application should be re-applied from time to time, as a regular maintenance practice.

LOSP treatment may interact with some surface coatings. For example, residual solvent from the LOSP treatment process may interfere with both adhesion and drying of the surface coating. In addition, water repellent agents in the LOSP may affect the adhesion or spreading of some coatings. LOSP-treated timber suppliers may provide guidelines for painting, but you should always follow the surface coating manufacturer's instructions.

It is essential that all exposed surfaces resulting from cutting, notching or drilling of the timber during installation are resealed with some form of supplementary preservative. Suitable 'in can' preservative solutions can be obtained from most timber, paint and hardware suppliers.

We sincerely welcome treatment order from abroad!

Notice: we can sell LOSP treated wood according to your size or do treatment service on the boards you provide.

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