Installation Instructions

Trimming Weld Thread
Allow welded thread to cool for at least 30 minutes before trimming flush with
surface of flooring.
FIG.55: The use of the seam plane is the preferred
and recommended method for trimming heat weld
thread.
When using the seam plane, the trimming process is
accomplished in one pass. The front blade trims the
top part of the weld thread. The rear blade trims the
weld thread flush with the surface of the flooring. A
spatula knife will be needed to trim approximately
3" at each end of the seam.
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Matching colored thread is available for each color of flooring. However, contrasting
colored thread may be used, if desired. Be sure the thread on the job site is the color
specified. An electric router must be used to rout seams if a contrasting color thread is
used.
CAUTION:
Heat welding equipment operates at extremely high temperatures.
Use caution when handling this type of equipment.
Electric Welding Seams
Use a hot-air welding gun equipped with the Tarkett
®
#99 Heat Weld Nozzle.
Always practice on a scrap piece of material to determine correct temperature and speed.
If the temperature is set too high or the welding
speed is too slow, burning of the flooring may occur.
If the temperature is set too low or the welding
speed is too fast, poor adhesion of the weld thread
to the flooring may occur.
Clean seam area thoroughly with a vacuum to remove
any dirt or debris. Cut a sufficient amount of welding
thread to seal approximately one-half of the seam
length. Position excess thread so it will not interfere
with welding process.
FIG.52: Insert welding thread through the nozzle
about 3" or 4". Hold onto excess and immediately
begin welding. Pull the hot-air gun towards you,
allowing the weld thread to feed through the nozzle.
The tip of the nozzle shall be positioned so that it is
parallel with the surface to the flooring and not tilted
to the left or right side of the seam. Approximately
one-half of the weld thickness will be bonded to the
seam. A proper weld is achieved when a small bead
forms on either side of the weld thread.
Continue welding the seam until the end of the
pre-cut weld thread. Using a seam plane trim off
approximately 2" to 3" at the end of the weld thread
flush with the surface of the flooring.
FIG.53-54: Using the hand router, rout approximately 1" at the end of the trimmed
thread. This will allow for easy overlap where the second-half of thread is fused to
remaining thread. Cut another length of thread to complete the remainder of the seam.
Start at the wall and work toward center of seam. Overlap approximately 2" where
second length of thread joins the first.
FIG.52
FIG.53
FIG.54
FIG.55