Wood/ Timber Treatment

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Active Infestation Solution

At D&S we offer a wide range of Wood / Timber Treatments, this is because there are so many issues with wood/timber. We have found with global warming the wood boaring insect is on the rise, also with the wet weather being more the normal these days wood rot wet/dry is also on the rise. If these issues are not dealt with they can result in structural damage. 

Wood treatments


D&S have a range of wood preservatives to treat timber with problems such as wood boring insects like common furniture beetle, usually called simply woodworm. Other types of active infestations are wet rot and dry rot of timber. Where rot is a problem then our fungicidal preservative can be used. Dry rot can also affect masonry and a specialist fungicide is available for treatment of stone, brick and concrete. These products are supplied under the Sovaq brand which is a range of water dilutable micro-emulsions for active infestations. Where thick sectioned timber such as joists embedded in masonry needs a wood preservative treatment then Deepkill, a thick bodied, deeply penetrating product should be used. If joist ends are too far gone following an active infestation then rather than replacing the whole joist the timber can be repaired using a  Bower Beam

Active Infestation


D&S have experience in the treatment of these insect pests. Our fully trained and experienced staff will correctly determine whether treatment is necessary in the first place. The wrong identification of the insect can often lead to costly and unnecessary solutions. With D&S you can be sure we will provide the correct woodworm treatment to eradicate your woodworm infestation.

Our Surveyors will identify:

  • The type of insect and extent of the woodworm infestation
  • Whether the infestation is active or inactive
  • How much structural damage, if any, has occurred
  • What woodworm treatment is best for your property

Following Inspection:

We shall draw up the correct specification for the elimination of the woodworm infestation, and state any special requirements for difficult pests eg. Death Watch Beetle or House Longhorn.

  • Common Furniture Beetle (Anobium punctatum)
    By far the most common insect estimated to infest about 75% of properties in the UK. All buildings over 30 years old are susceptible to infestation by this insect.
  • Death Watch Beetle (Xestobium rufovillosum)
    This insect confines itself to infesting large sectioned hardwoods, often associated with an attack of Wet Rot.
  • Wood Weevil is an insect that prefers extreme damp conditions and decay. Chemical treatment is therefore not always necessary as dry timbers will not be affected by Weevil.
  • House Longhorn (Hylotrupes bajulus)
    Seldom found outside the south of England, this insect infects the sapwood of most softwoods, particularly roofing timbers. Other insects can be found attacking timber, these include: Bark Borer Beetle, Pinhole Borer Beetle and Beetles of the Lyctus species to name but a few.


Active Infestation Summary

We have been providing the eradication of woodworm from both domestic and commercial properties for many years. From the most common woodworm, the common furniture beetle (Anobium punctatum) to other species including House Longhorn beetle and death watch beetle, we at D&S are specialists in identifying the type of infestation and ultimately the eradication through our range of treatments. Our qualified surveyors will identify the correct woodworm treatment for your property based on the kind of infestation you have. With a long term guarantee you can be sure that your problem will be gone for good!

Timber as in its makeup gets wet and dry all the time, and most of the time this is perfectly acceptable, however if the timber is constantly over the normal moisture level then things can go wrong.  


D&S are experts in all forms of fungal decay. From identifying the dry rot through to the correct treatment,  you can trust D&S with your problems.


Both Dry Rot (Serpula Lacrymans) and Wet Rot can cause structural defects in buildings. Not only is it unsightly but it is also unhealthy. It can grow at an alarming rate in certain conditions. These problems are usually caused by dampness, running water, poor ventilation and bad maintenance or a combination of these conditions.

Dry Rot is the most serious of all wood rotting fungi. For fungal decay to begin it requires water to penetrate wood which then allows bacteria and micro fungi to colonise resulting in the partial breakdown of the cell structure. The timber then become more porous and potentially wetter. If the moisture content is sustained above 30% then Dry Rot can colonize and germinate which inevitably leads to decay.

As Dry Rot spores are airborne this means that all properties are susceptible to attack given the right conditions. Once germination is established the fungus can spread rapidly, even though thick masonry walls, in search of timber causing potentially widespread and extensive damage if not treated at the earliest instant.


Originally known as Merulius Lacrymans (meaning Tears of the Blackbird as it was thought originally that the fungus was spread by blackbirds) the fungi now known as Dry Rot can be traced back to 1720. By 1827 the name had changed to Serpula Lacrymans as a result of the snake like growth of the hyphae which evntually come together to form mycelium growth. At the ends of the hyphae tear like droplets of water appear (this is the Dry Rot’s way of controlling moisture) hence the term Lacrymans meaning tears.


Like wood boring beetles, fungi too have their own life cycle and we are now going to look at  the lifecycle of probably the most economically important species of fungal decay in buildings, the True Dry rot fungus, otherwise known as Serpula lacrymans.

Dry Rot needs 3 elements to continue its growth within timber. These are water, air and a food source, in this case timber. The fungus obtains its food from the timber by breaking down the cell walls of the timber which ultimately results in a loss of strength in the timber and eventually the overall collapse of the timber. For the purposes of this example we will assume that the timber has a moisture content of between 25% and 30% for optimum germination and growth of the fungus.

The lifecycle starts with a spore landing on the timber in the correct environment. The spores are omnipresent which means that they are in the atmosphere all the time. If you were to take a sample of the air in the room that you are in and micro filtered it down then we would more than likely see that dry rot spores were evident in the filters. As the spores land on the timber they germinate and produce hyphee growth.

This is a similar process to that of placing seeds in compost. The hyphee growth is the root of the spores. The hyphee growth then mass and colonise together to produce mycelium growth – this is white, and almost “fluffy” in appearance. After a period of time the Dry Rot becomes stressed – this happens when one of the 3 necessary elements for growth (water, air or food) is removed or if the dry rot is in the vicinity of light.

When stressed the it produces a sporophore or fruiting body which is a self reproduction organ. This allows the spore bearing surface of the sporohfore to shed into the atmosphere so that the new spores can land again, hopefully in the right environment to carry on germinating and extending the growth of the Dry Rot.

The presence of Dry Rot is usually associated with a building defect allowing ingress of moisture – for example, a leaking gutter or a cracked down pipe. If a building is correctly maintained and kept relatively water tight then generally this would preclude the presence of Dry Rot. Lets now look in detail at the various parts of the lifecycle in the images below:

Dry Rot Life Cycle


D&S have many years of experience in dry rot treatment. Our fully trained and experienced staff will identify the type, and the extent, of any decay and will produce a suitable specification for the treatment and eradication of the problem. You will also have the peace of mind from a 20 year guarantee for the work carried out.

D&S will:

  • Identify the nature, type and extent of the decay
  • Determine the cause, finding the source of moisture
  • Propose the cure for the rot with full specification and method statement for the rot treatments
  • Advise what additional steps (if any) are required to safeguard the property

Dry Rot, Wet Rot and Fungal Decay

The sight of fungal decay can strike horror into property owners. Be it dry rot with its fruiting bodies and orange spore dust or wet rot with its cotton wool like mycelium. D&S can effectively treat and remove dry rot, wet rot and other forms of fungal decay. D&S have many years experience in the correct identification of fungal decay and ultimately the treatment of dry and wet rots. Our range of treatments will solve your problem with the minimum of fuss. With the benefit of a long term guarantee you can be sure that your fungal decay problem will be taken care of for good!

D&S are experts in wet rot, dry rot and all forms of fungal decay. From identification through to the correct treatment you can trust D&S with your wet rot problems. For Wet Rot to grow it needs a regular source of moisture ingress. Water ingress is typically caused by defective plumbing or  damaged guttering or downpipes. The moisture combined with the presence of wood can provide the ideal breeding ground for Wet Rot spores. If left un-treated it will remove the strength from the timber and may affect the structural integrity of a building.


Wet Rot fungi, whilst generally not as destructive as Dry Rot, it can nevertheless cause severe damage if allowed to go unchecked and is a common cause of structural defects. Wet rot is commonly found in timbers that come in to contact with damp masonry. Typical signs of a problem include localised fungus which is mainly black in colour. Another key identifying factor of Wet Rot is the colour of the decayed and rotten timber as well as the size and type of cracking of the timber. The images below show some of examples of wet rot.

Wet Rot

On a domestic survey the varnished floor above looked to be on good condition. Only once the floorboards were removed and the joists probed it was clear that wet rot decay had badly effected them.

Wet Rot 2


D&S have many years experience in wet rot treatment. Our fully trained and experienced Surveyors will identify the type, and the extent, of any decay and will produce a suitable specification for the treatment and eradication of the problem. You will also have the peace of mind from a 20 year guarantee for the work carried out.

D&S will:

  • Identify the nature, type and extent of the decay
  • Determine the cause, finding the source of moisture and drying out the surrounding area
  • Propose the cure for the rot with full specification and method statement for the rot treatments. Where timber affected by Wet Rot has lost its strength timber would have to be removed and replaced. Any new timber would be treated against the growth of Wet Rot spores
  • Advise what additional steps (if any) are required to safeguard the property

Wood rot

Wet rot – this is where the wood has gone over the allowed moisture rate and not dried out in time. If this if not treated it will result in timbers having to be replaced and/or treated.