Quarantees & Qualifications
CONTROL OF XYLOPHAGOUS INSECTS
Given that PAMTHER is certified by the FCBA technological institute, it carries out treatments based on the requirements set out in the FCBA reference documents. The products are also certified by FCBA (CTB-P+ certification). In addition, today companies are required to train their applicators in biocide standards (certificates provided to you) to carry out the treatments. Without this training, the company may not ask its journeymen to commence work.
During construction, wood from the cross-frame, canopies, indoor and outdoor beams are normally treated with auto-claves and guaranteed for 10 years against the attack of xylophagous insects.
Nevertheless if these obligations are not respected or after maintenance, it is necessary to get the wood treated preventively or curatively (if the wood is already damaged), by professionals, every 10 years.
Different treatment methods can be offered depending on each configuration of the cross-frame and the lifestyles of the residents.
I/ TREATING WOOD BY PRESSURISED INJECTION
Wood injection involves the following steps :
THE PREPARATORY PHASES
The survey :
Identifies the infected areas
Encourages the penetration of the preservative in the areas to be protected at the time of in-depth treatment and surface application – concerns all the infested areas.
Removes the bore dust from the galleries bored out to aid penetration of the protection product in the areas to be protected (healthy wood) at the time of the surface application.
Cleans the surface of the timbers.
Elimination of waste :
Wood waste and other waste caused by the previous treatments are removed from the site before injecting and applying the product.
This destroys the larvae in-situ and/or prevents them developing. The treatment involves injecting a preservative in holes drilled into the wood: these are the injection wells. The diameter of the wells must be adapted to the dimensions of the wooden structures.
To place the injectors in the wood, it must be drilled as follows :
The holes (injection wells) must be drilled in the wood in staggered rows on the facing or in line with the edges. The distance between two wells must be no more than 33 cm. The wells must be drilled at 2/3 the thickness or height of the timber. The drills must not leave more than 60 mm at the bottom of the wells. For pieces of wood thicker than 200 mm where half the perimeter is greater than 300 mm, the wood must be drilled on both sides (this is called double-injection). The depth of the wells is half the thickness of the piece of wood.
This injections must be made in the place where the wood is built-in, and they must be in two lines and directed towards the masonry, as close as possible to it, as well as in any pieces of wood in contact with the walls. For king posts and cracked wood, the wells must be arranged in a line each side of the cracks. The in-depth treatment concerns all timbers infected over an area greater or equal to 70 mm after drilling and with a half perimeter higher or equal to 200 mm. The injections used are a diameter of 9.5 mm or 7 mm for small pieces of wood. This ensures that the preservative penetrates into the wood on the surface and in depth, especially after the first centimetre (whereas other systems only begin to treat after 2.5 or 3.5 cm from the surface, running the risk of being ineffective on the surface, the preferred zone for woodworm). The injections have an effective and rapid patented system to prevent flow-back and maintain an optimal pressure inside the wood.
This protects timbers from new insect eggs being laid and eliminates any larvae close to the surface of the wood. The application is performed over at least two successive treatments, at low pressure and without air, on all the surfaces accessible for the piece of wood.
DRILLING AND INJECTION
II/ TREATING WOOD BY SPRAYING A TREATMENT GEL
Treating wood by spraying a treatment gel involves the following steps :
APPLICATION OF THE TREATMENT GEL
The wood is treated by applying a treatment gel with exceptional penetration qualities and resistance, in order to reduce the injections into built-in wooden fittings and wood in contact with masonry. The gel is four times more powerful than other insecticides. It is odourless, does not run and does not colour the wood when dry. With a flash point greater than 70°C, the low volatility of the product removes almost any fire risk.
The treatment gel is remarkably effective and does swell or lift fibres. It is guaranteed for Longhorn Beetles, Termites, Deathwatch beatles and Lytus. Certified CTB-P+, it complies with the quality standards in terms of effectiveness and for both health and environmental safety.
It was the first French wood treatment to be approved by European standards of biological effectiveness*, demonstrating its excellent penetration power and flow properties through the wood !
If additional injections are carried out, they must be technically justified and/or by the environment of the site. The following should be treated by injection :
Wood with a section higher or equal to 100 mm and a ½ perimeter equal or superior to 400 mm as well as round wood with a diameter higher than 300 mm, woods in contact with masonry, wood for built-in furnishings and fittings.
*For more information of the European standards of biological effectiveness
The European standards of effectiveness for treatment products, updated in 2008, demonstrate an optimised relationship between the product’s efficiency and the dose of biocide substances. Compared to previous version, the effectiveness is more strictly evaluated and targeted since there is a greater correlation with the flow and penetration of the treatment product in the wood after application.