Home » Why
True North » Log
Wall System » Butt Spline
Log Wall System
The True North Patented Butt Spline Assembly
 A)
Two holes are drilled in the end of each log to create a figure
8 shape as they butt together in a wall assembly.
B) A custom made-butt
spline clamp is inserted into pre-drilled clamping holes and pressure
is applied to draw the joint together.
C) An asphalt-impregnated
figure 8 foam pad is installed in the bottom of the figure 8 shaped
holes.
D) A two-piece patented polypropylene butt spline assembly
is wrapped with asphalt foam tape and then dropped into the figure
8 shaped holes.
E) Two 10 inch common spikes are
driven into the
two piece butt spline assembly, wedging it apart, thus tightening
the joint. This procedure is similar to attaching an axe to an
axe handle with a wedge.
F) Another asphalt-impregnated figure 8 foam pad is installed
on top of the butt spline assembly.
G) Finally the butt spline
clamp is removed.
True
North's Secret
 The green arrows in the image to
the right demonstrate
the natural shrinkage in the width of the log.
The log squeezes
on the radius of the butt spline assembly. At the same time, shown
with blue arrows, the
log shrinks longitudinally, pulling
on the
butt spline assembly, making the joint progressively tighter over
time.
True North's Philosophy
The naturally occurring shrinkage in the width and the length
of the log is used to its fullest advantage to make the log home
airtight.
*Systems shown and used by True North Log Homes Inc. are protected
by patents and patents pending - U.S.A. and Canada.
|
