Liquid
Bora-Care
This
liquid solution helps to promote diffusion quicker and deeper
in dryer wood. It treats the outer shell of the wood. Borates
are not "fixed preservatives", they mobilize whenever the wood's
moisture content is high enough to support decay fungi. If you
have an existing termite problem, we recommend an immediate application
of Bora-Care. Liquid Bora-Care is often used in conjunction with
the Impel Rods. After drilling holes for the rods, fill the holes
with the liquid solution and let is absorb into the wood. Then
insert the rods and then spray the whole are on the outside with
the Bora-Care. This will get Bora-Care deep in the wood immediately
and provide the necessary moisture to activate the Impel Rods.
How does Bora-Care
get into the wood?
When first applied,
the Bora-Care solution coats the surface of the wood. Within minutes
the active ingredient penetrates the surface of the wood. Bora-Care
then begins to diffuse or move throughout the entire piece. How
quickly diffusion occurs depends on wood species, moisture content
and environmental conditions.
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Impel
Rods
Installation Details
There are three easy steps in installing Impel Rods: (1) drill
appropriate sized holes to accommodate the rods; (2) insert Impel
Rods into the holes; and (3) plug the holes with wooden dowels
or caulk. Drill holes should be about 1/16" greater in diameter
than the rods for a snug fit. This ensures diffusion in all directions.
Also, a minimum of 1/8" head-space should be left between Impel
Rods and the hole plug to allow for rod expansion. See Diagram
2 for an illustration of these details.
Impel Rods may be
positioned in a variety of ways depending on access and owner
preference. A drilling pattern that is least conspicuous may be
selected for aesthetics. Diagram 3 shows how Impel Rods may be
positioned in a typical butt and pass corner section. Although
corner constructions details vary widely, Impel Rods should be
placed about 6 inches from the end of each log and perpendicular
to the wood grain, as shown. The recommended application rates
for various sizes of logs and timbers are found in Table 1.
In base logs, install
Impel Rods 6 inches from each end and at the recommended spacing
along the log. In rafters and overhangs, install Impel Rods 6
inches from each exposed end and at the recommended spacings.
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Preservative
Diffusion: How it Works
Impel Rods
depend on moisture to work. When moisture contents reach
levels suitable for decay attack (i.e. around 25%), Impel
Rods slowly dissolve and being to diffuse throughout the
wood.
The reate and
extent of diffusion is mainly dependent upon the wood moisture
content. The preservative will migrate into the areas of
highest moisture, which are also the areas at highest risk
from fungal decay. Generally, higher moisture contents result
in more rapid diffusion. Diffusion is also more rapid along
the wood grain and in wood where decay is present than across
the grain. Remedial treatments can effectively stop decay
up to 12" from the site of application in relatively short
periods of time. At moisture contents of 60%, borate preservative
can migrate 10 inches in only 8 weeks. At 30%, this distance
may take 4-6 months. Nonetheless, preservative diffusion
from Impel Rods will adequately control fungal decay, which
attacks wood at a much slower rate.
When moisture
levels drop below about 25%, the preservative becomes dormant
and provides a reserve ready to reactivate should decay-conducive
conditions reoccur. See Diagram 4 for an illustrations for
this diffusion process over time.
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Bug
Juice
Details
Bug Juice is a remarkable insecticide paint additive designed
to eliminate crawling and flying insects on interior & exterior
surfaces. The active ingredient in Bug Juice is Deltamethrin.
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