Lignum concentrate woodworm treatment 1 litre makes 25 litres

Price excl. VAT
Price incl. VAT
(28 items in stock)

Lignum Pro I62.5 is an insecticidal woodworm treatment formulated with micro-emulsion technology. It has a tiny particle size, which is in the nanometre range. This allows it to penetrate deep into timber in order to deliver the active insecticide ingredient. The insecticide eradicates wood boring insect attack and safeguards timbers against future woodworm infestation.

The Lignum Pro I62.5 is supplied in a 1litre concentrate. It is mixed with clean water at a ratio of 1:24 to produce 25 litres of ready to use woodworm killer with 0.25% w/w Permethrin. Permethrin is a highly effective insecticide with proven performance and low toxicity

How to use Woodworm Treatment

  • Open up and make accessible as much timber surface as is practical; e.g. lift some floorboards to gain access to both top and bottom surfaces of timber floors and to flooring joists.
  • Ensure wood surfaces are clean and free from wood dust and other contaminants
  • Mix 1 litre of insecticide with 24 litres of clean water
  • Apply diluted fluid, to all accessible surfaces of the timbers using low-pressure spray or brush, at the applicable coverage rates

Coverage for treating woodworm infestation:

Use 1L of diluted fluid to treat a surface area of 3.3m2 (300ml/m2). Therefore 1 litre of concentrate (25 litres of fluid) treats a total surface area 82.5m2 of infested timber

Coverage for preventing beetle infestation in non-infested wood:

Use 1L of diluted fluid to treat a surface area of 5.0m2 (200ml/m2) Therefore 1 litre of concentrate (25 litres of fluid) protects a total surface area 125m2 of non-infested timber

Coverage Note:

Remember to calculate the full surface area when ordering. For example floorboards in a 4m x 4m room will have 16m2 top surface and a 16m2 bottom surface. The floorboards may be supported by ten 150mm x 50mm joists with 3 exposed surfaces. Therefore in addition to the 32m2 floorboard surface there is another 14m2 of accessible joist surface area to treat (150mm + 150mm + 50mm x 4m long x 10 joists = 14m2).


Subject to wood and ambient conditions the product is touch dry in 1 hour and should be suitable for overpainting, varnishing or staining in 24 hours. Unprotected persons and animals should be kept away from treated surfaces for 48 hours or until dry.


Product does not have a finish and leaves the same effect as applying water or solvent. However it is always advisable to try on a small inconspicuous area before application to ensure product finish is as expected.


Rinse out spray equipment and save washings for use as diluents for the next use. Remove most of product from brushes with tissue and wash brush with soap and clean water.

This high-strength insecticidal woodworm treatment is designed for professional use in eradicating woodworm infestation in floors, roofs, structural timbers, wooden panels and furniture.

Delivery options are only available for delivery to mainland UK (excluding Scottish Highlands, Scottish Islands, Channel Islands, Isle Of Man Northern Ireland and Eire). Delivery to Scottish Highlands, Scottish Islands, Channel Islands, Isle Of Man, Northern Ireland and Eire are limited to 20kg and are available at a Premium rate. Please contact us on or via our help line if delivery is required outside these areas. Alternatively select ‘World-wide Delivery’ and a member of our sales staff will contact you regarding your options and costs.


We offer for the mainland UK , as standard, a FREE delivery service on all orders having a value greater than £200.00 (excluding VAT). For orders having a value less than £200.00 (excluding VAT) a carriage fee of £8.50 + VAT will be levied. Goods will be sent by a national carrier on their 1-2 working day standard service. Customers must understand that delays can always happen while their order is with the courier, for this reason we can not guarantee your order will be with you next day.

It is important that the customer ensures that all the delivery details are correct and that the customer or someone acting for the customer is able to sign for the delivery. Twistfix accept no liability for failed deliveries as a result of incorrect delivery details or the absence of any authorised signatory. Twistfix will attempt delivery to the recipient between the hours of between 8am and 6pm. If no one is available to receive the delivery an attempt may be made to leave the item with a neighbour. Alternatively the carrier may return the item to the sorting office and leave a calling card at the recipient's address to advise of the attempted delivery. It is the responsibility of the customer to arrange to collect the item from the depot or to arrange re-delivery with the carrier. Further information regarding Delivery can be read at our Terms & Conditions.


Items returned and received in their original condition and packaging within 14 days of delivery will be accepted for exchange or refund subject to a 20% restocking fee. You will be responsible for the shipping costs incurred in returning the goods and should ensure the items are adequately insured while in transit to us. You should email to request to return items.

Where the goods are being returned because they are faulty or are not the goods that were ordered then, subject to the goods being returned in re-saleable condition, Twistfix will refund the cost of return shipping. Further information regarding Returns can be read at our Terms & Conditions.