Technical Specifications

What is Chinking?
Chinking is the stuff that goes between the logs on many log
homes. I t ’s more than just a pretty look——chinking acts as a form of
insulation and as a barrier to the elements outside. It keeps the weather
outside and the comfort of your home inside.
Traditional chinkings are brittle, mortar-like substances. They often
crack, break and pull away from logs. They, and many other chinkings
available, can’t absorb the movement all log homes endure. Logs
shrink and swell with temperature changes, humidity changes and
aging. When any chinking fails, wind and water infiltrate into your
home. Log Jam keeps your home tightly sealed. (Log Jam is not
intended to be used as stucco.)
Why Log Jam is better.
Log Jam is the elastic chinking that simply responds better to log
movement than other chinkings. Since all logs move, this elasticity
allows Log Jam to handle log movement, in any type of weather, over
and over again. It stretches and compresses as logs shrink and
swell—up to 100% of the original joint size. Yet it maintains the tradi-
tional look of mortar, without “stretching out,” so it still looks good
after years of log movement.
With Log Jam, you should only have to chink once.
No one wants to re-chink time and time again. Chinking that cracks
and literally pulls away from logs leaves your home vulnerable to
weather, air filtration and insects. Avoid the hassles——use Log Jam
for a tight seal.
Since most homes experience log movement during the first few
years, Log Jam is guaranteed for five years. So you can be assured
Log Jam won’t pull away from your logs. It tightly grips to all species
of wood (including oily woods like cedar).
The Basics in Applying Log Jam
™
1.Read this Data Tec (LJC 002) and the entire label before applying
this product.
2.Start with clean, sound logs that have already
been treated with a preservative and stain compat-
ible with Log Jam. (We recommend PeneTreat as
a preservative and either Capture/Cascade or High
Sierra Log Stain., or for interior log treatment,
Symphony Clear Coat.)
3.Install a “bond-breaker,” i.e., backer rod or mylar
tape.
4.Apply Log Jam by use of trowel, grout bag, bulk
loading gun, or commercial machinery, such as
the Sashco patented Snorkler™ Pump.
5. Tool Log Jam.
Application Tips
New Construction
Joint Width: Joint width should be a minimum
of 4 times the anticipated movement of the logs.
For joints 1” in width or more, the
depth should
be 3/8” to
1/2”. The
depth of
joints less
than 1” wide
should be
half the
width, but
no less than
1/4”. (Log
Jam will
span joints
3”-4” wide.)
Competitive brand.
Log Jam holds its seal.
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