Nor-Lake envIro-lIne - Manual (Page 15)

© 2013 Nor-Lake, Inc 07/13 Rev. F 132617 13
When the entire screed assembly is leveled and supported by shimming, as required,
CAREFULLY AND WITHOUT DISTURBING THE SHIMMING MATERIAL, lift the screed sections, tip
them upside-down and apply a heavy bead of construction sealant to the bottom of the screed section
along both of the edges that contact the building floor surface. The diameter of the sealant bead should
be larger than the thickest shimming material to ensure a complete, air-tight seal along the entire length
of the screed (Figure 4). NSF approved sealant is provided and will be found in the hardware box.
Immediately after applying the construction sealant to a screed section, replace the screed section to its
original location on the building floor WITHOUT DISTURBING THE SHIMMING MATERIAL and place a
sealer splice every joint in the screed assembly (Figure 4). Since the sealer splice is intended to keep
adjacent screed sections in alignment, approximately one-half of the sealer splice should lap each section.
It need not be fastened in place (Figure 4). NOTE: Seal all screed joints with sealant. Make a final
check for squareness, levelness and whether the screed assembly is located properly with respect to the
drawn outline on the building floor.
Follow by securing the screed assembly to the building floor with fasteners that are appropriate for the
building floor. These fasteners are not provided and must be obtained by others.
Fasteners should be applied down the center line of the inside of the screed at intervals of approximately
36’’; however, where shimming is used, apply the fasteners through the shimming material, NOT BETWEEN
the shimming. When the entire assembly is secured in position, trim away all excess construction sealant
and shimming on both edges of the screed. Trim flush with the sealant lip of the screed and touch up any
areas where the construction sealant is not making a perfect seal (Figure 4).
NOTE: In the event that the building floor was specially prepared for the installation and no low or high
points are detectable, it is possible that no shimming will be necessary. It will then only be necessary to
apply construction sealant to the bottom of the screed and secure the screed directly to the building floor.
The entire procedure, as described, must be followed explicitly, however, except for the details that pertain
to the shimming.
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