Timber preservatives can be classified into three broad categories: Water-borne, Light Organic Solvent Preservatives (LOSPs) and oil borne.
Water-borne Preservatives
Traditionally, water borne preservatives are most commonly used in the industry due to their availability and low cost. Some water-borne preservatives include:
Chromated Copper Arsenate (CCA) H3 – H6 |
MicroPro H3-H4 |
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Organic Solvents
This type of timber treatment uses white spirit as the solvent carrier to deliver preservative compounds into timber. At Davids Timber we use;
Light Organic Solvent Preservatives (LOSP) |
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Oil Borne
Oil borne preservatives such as creosote and pigment emulsified creosote are a complex mixture of chemicals obtained from the distillation of coal tar. Being a liquid it is normally used without the addition of a solvent. Fuel oil is, however, is sometimes added to facilitate the treatment of railway sleepers.
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