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Best Wood Preservatives

Here at Barnard Fencing, through the means of our blog, we’ve made it our job to offer advice on how to create, arrange, decorate and recycle different forms of fencing. However, we also provide technical knowledge relating to our industry, too, which is why, this month, we will be offering a list of the main types of wood preservatives.

With winter now in full swing, our garden furniture is set to take a hit from the elements, particularly in the bitterly cold months of January and February. So, it’s definitely worth applying another layer of defence to your fencing, sheds and decking in order to protect them from the worst.

Chromate Copper Arsenate

Wood preservatives serve a number of functions, one of which is deterring or eliminating insects. Chromate Copper Arsenate (CCA), a pesticide containing chromium, copper and arsenic, serves this function, and is used to protect wood against termites, fungi and other pests which can cause wood to rot.

However, in recent years there has been some concern with the widespread use of CCA, with detractors claiming that the arsenic may leak out over time and become harmful to those around it. That said, CCA timber is still ubiquitous in many countries.

Oil-based preservatives

The most common oil-based preservatives are creosote and pentachlorophenol. Creosote is typically used for treating timber structures in both commercial and domestic settings, and are great for treating fencing and sheds. Creosote works by penetrating the wood through soaking and protecting from within and, once dried, offers tough, weather-resistant surface.

Pentachlorophenol (PCP), on the other hand, is used as a pesticide and a disinfectant, and is usually applied by spraying or brushing the wood.

Water-based preservatives

Water-based preservatives tend to be a little cheaper than their oil-based counterparts, which is why they are more commonly used in domestic treatments. Although they possess similar properties to oil-based preservatives as far as functionality is concerned, they do have one marked drawback: warping. Since, as the name suggests, they are partly composed of water, these preservatives can often cause the wood to swell and warp, especially if the wood is already porous, and will eventually alter the structure of the wood.

An environmentally friendly option

In recent years, more environmentally friendly ways to treat and preserve would have been invented, for example, heat treatments. This sort of treatment involves heating the wood to extreme temperatures and starving the wood of oxygen. During this process, due to its extreme nature, the chemical makeup of the wood is altered significantly, making it tougher and inedible to microbes and insects.

 

Barnard Fencing Supplies, is a family run business with over 30 years experience supplying Nottingham areas: Arnold, Mansfield, Gamston, Hucknall and West Bridgford. We provide no obligation quotations and exemplary work regarding fence supplies, fence panels, security fencing, fence posts, fence installation, concrete posts, metal gates and sheds. If you would like to know more about us or wish to organise an installation – please call or email our professionals today!

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