Wykamol Boron Rods

Wykamol Boron Rods are cylindrical implants composed entirely of anhydrous boric oxide. They contain the maximum level of borate preservative available in rod form (1kg of Boron Rods yields 1.7kg boric acid when dissolved).

For use as a wood preservative to control wood rotting fungi and wood boring beetles in new and existing structural and joinery timbers. The preservative is mobilised when exposed to dampness (wood moisture content greater than 35% w/w).

Suitable for use in timbers already at risk of or showing signs of decay (see also Wykabor 10 and Wykabor 40 data sheets) or as a preventative treatment in sound dry timbers which may be exposed to wetting in service (e.g. window, door frames).

Note: For full protection against wood boring beetles where the timbers may remain relatively dry in service, and/or protection against fungal decay due to surface wetting which does not mobilise the protective agent in Wykamol boron rods, a surface application of a suitable liquid preservative as an adjunct to rod installation is recommended (see separate data sheets).

Special Properties

• Highly concentrated wood preservative implants
• Convenient to handle, low hazard
• Full cross-section protection in damp wood
• Wide range of applications

Application

Drill holes in the timbers to be treated approximately 1- 2mm greater in diameter and at least 10mm longer than the rod to be used. The hole should be drilled to a depth not more than 20mm from the rear of each section.

Once inserted (pushed firmly to the bottom of the hole) the rods are sealed in position with a suitable filler or plastic cap/timber dowling.

The number and configuration of the holes/rods will depend on the type and use of timber and the area considered at risk of wetting. For window frames, in most situations, rods (of a suitable diameter/length) should be inserted at 100mm intervals along the grain (e.g. sills) and at 50mm across the grain. In vertical elements the first rod should be placed no more than 50mm from any end grain/joints. Overall coverage of ca. 6-7kg Wykamol Boron Rods per m³ should be achieved in vulnerable areas.

In joists, a similar pattern is recommended but special care should be taken to ensure protection of concealed (built-in) sections in contact with masonry. The first holes should be as close to the masonry as possible and drilled downwards at an angle to finish not more than 30mm from the joist end.

For fence posts drill a hole at 45° to the groundline to a depth at least equal to 110% of the post diameter (see diagram below) and insert a rod of appropriate size. It may be considered advantageous to apply Wykamol Boron Rods in conjunction with Wykamol 40 – a boron gel product (see separate data sheet) in order to provide a ‘fast’ and ‘slow’ distribution of the preservative material into the surrounding timber (especially if some decay is already established or the wood moisture content at the time of treatment is below 35% w/w).

Downloads:

Wykamol Boron Rods Product Guide November 2010

Wykamol Boron Rods MSDS Dec 2010

   Wykabor Boron Rods 

Additional Information:

• FOR USE ONLY AS A WOOD PRESERVATIVE (professional use only).
• HSE Approval Number 7405
• Manufactured under a quality system complying with BS EN ISO 9001 : 2008.

Further information and advice is freely available from the Wykamol Technical Department. For general guidance consult the HSE Guidance consult the HSE Guidance Note “Remedial Timber Treatment in Buildings” (HSE Books, ISBN 0-11-885987-0).