Timber Preservation

Timber preservation

Cannon Clarke Ltd have been helping their clients preserve timbers in homes and commercial premises for 25 years.

Our surveyors are trained to identify timber decay (wet or dry rot) and insect infestation. We regularly review the treatments available to ensure that we specify the best and safest products.

Helping you with Timber Decay…..

There are two primary type of timber decay generally referred to in the construction industry – wet rot and dry rot. These both develop in a similar manner and the stages of their life cycles are very similar.

Dry and wet rot are caused by fungus which thrives in damp timber, water penetration, poor ventilation, high relative humidity levels and bad maintenance. Dry and wet rot can cause major structural defects in buildings, particularly to existing timbers. This rot & decay is unsightly and unhealthy and can grow at an alarming rate in certain conditions.

The presence of timber decay needs to be carefully diagnosed in order to ensure that appropriate remedies are specified. Cannon Clarke Ltd surveyors are specially trained and are highly experienced so that we can distinguish between the different types of fungal decay which may be found in buildings.

Dry rot is the more virulent & damaging type of wood rotting fungi and specialist advice is imperative in order to identify the fungus, to determine its true extent and to make recommendations in relation to the scope of the repairs required and the necessary specialist treatments.

To successfully eradicate dry rot you must initially eliminate the source of moisture and ensure that the moisture does not return at a later date. The works will normally involve the replacement of decayed timbers, the removal of wall plaster to expose extent of decay, the treatment of the wall structure by masonry irrigation and the return of the area to a watertight condition.

Wet rot is a general term covering all the wet rot species of decay. Repairing outbreaks of wet rot is generally much less involved than those associated with dry rot. The works will normally involve the replacement of the decayed timbers only, however it is still critical to ensure that the moisture source is eliminated or at least isolated from the timber.

Cannon Clarke Ltd can offer a variety of remedies for dry and wet rot. Our Surveyors will:

• Identify the nature, type and extent of the dry or wet rot outbreak
• Identify the cause
• Propose a solution with full specification, method statement and cost of the repair

We regularly review the treatments available for all types of fungal decay in buildings to ensure that the best and safest products are presented to our customers.

As well as the treatment of affected timbers with either chemical treatments and/or rapid drying techniques, it may be necessary to completely replace defective timber which has insufficient residual structural strength due to being attacked by wet or dry rot.
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Timber preservation
For expert advice and woodworm treatment, get in touch with Cannon Clarke today on:

0800 197 4488
Woodworm treatment

Woodworm Treatment…..

All woodworm consume timber in the larval stage of their life cycle. They generally create bore dust and leave behind a hole that varies in size. The tunnels they form within the timber weaken the timber to a level where it can be structurally unsafe or dangerous.

The main types of beetle are Common Furniture beetle, Death Watch beetle, Wood boring weevil and to a lesser degree House Longhorn beetle and each prefers a different type of timber. Cannon Clarke Ltd surveyors are fully trained to identify which insect is present whether it is active or inactive and to recommend an appropriate treatment – certain woodworm outbreaks do not need treatment.

Cannon Clarke Ltd use the safest (lowest toxicity) chemicals to eradicate the insect in all its stages (egg, larva, pupa and beetle). Heartwood and hardwood are more difficult for chemicals to penetrate than sapwood and softwood but appropriate specifications will be used. Heavily infested timbers will probably need replacing in some situations.

We regularly review the treatments available to ensure that only the best products are presented to our customers. We are currently recommending the use of a permethrin-based insecticidal fluid, a dual purpose insecticide and fungicide (both of which are water based), and a deep penetrating wood paste preservative designed for heavier structural timbers. All materials have extremely low HSE hazard ratings and are cleared for use in areas which may have protected Bat roosts as directed by Natural England. However, we may consider other products in specific situations.

Our operatives are trained to protect your property as they work. Cannon Clarke Ltd has been treating insect attacks for over 30 years and we recognise the importance of minimising the impact of our operations on your home and furnishings whilst ensuring we do the job properly.
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