Boron Based Preservatives
Boron based preservatives are mostly supplied in 2 forms:
Borate rod: a fusion of sodium octoborate and boric acid at high
temperature to produce a 'glass-like' water soluble rod.
Boron/glycol mixes: sodium octoborate dissolved in monopropylene
or monoethylene glycol; there may also be some water present. 3 basic 'grades'
are available:
- 40 - 50% sodium octoborate: This material is somewhat 'gel' like,
colourless and usually supplied in caulking gun tubes ready for injecting into
pre-drilled holes in timber. This material will provide very high loading of
preservative deep within the wood.
- 20% sodium octoborate: supplied as a liquid; the viscosity may vary
according to manufacturer. Specifically for brushing but some of the less
viscous materials have been applied by other methods.
- 10 - 11% sodium octoborate: used for masonry sterilisation as part of
the control of dry rot. Some initial feedback suggests they are highly
effective in this role.
Suppliers of Boron based preservatives(in alphabetical order):
Remtox Chemicals Ltd
Tel: 01384 251000
Safeguard Chemicals Ltd
Tel. 01403 210204
Triton Chemical Manufacturing
Co. Ltd
Tel: 0208 310 3929
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