Glue-Down Carpet Installation
by Allan Ellis
February 16, 2010
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In
the beginning of my career as a floor covering installer, when we received a
glue-down installation from a retailer, it was a rubber-back printed pattern
for a kitchen, restroom or family room.
We carried solvent-based adhesive, one trowel size and solvent-based
seam sealer. We had little or no flash
time; we glued and dropped after we had patterned everything out we were
working with vinyl.
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We
did not consider room temperature (if we did not see our breath, it went down),
relative humidity and substrate temperature.
RH, PH, metering devices, moisture tests, vapor barriers, types of
secondary backings, acclimation and variance in height of the secondary
backings. These terms were not in our
vocabulary.
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The
thought of using our deadman and a cottonhead on the powerstretcher to align
patterns did not occur to us. We
stretched our printed patterns to match by kicking or using stay nails. If our fill piece pattern was longer than our
field, we made adjustments in our cross joints.
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As
you can tell from the above paragraphs, I started in the time before “training
in carpet installation” was heard of much outside of the unions. In today’s market, it is a necessity to be
well trained and knowledgeable about every detail concerning your
job.
Today we have many more options in training; with the internet the
opportunities are endless. There are
numerous seminars and manufacturer trainings available. CFI, since 1993, has offered certifications
and trainings that have benefited tens of thousands of installers. Time spent at any educational event will pay
dividends far beyond time lost installing flooring. The following photos will illustrate the value
of education and planning. Remember,
carpet is a fabric and it is virtually impossible to manufacture a perfect
piece of carpet.
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Photos
1 and 2 show that in the installer’s first two rolls, starting with a pattern
count, he measured from 9’9” to 9’6-¼” throughout the entire length of two
rolls. He started with his longest 9’9”
for his first breadth and subsequently, installed cuts with the following
pattern measurements: 9’8”, 9’7-¼”,
9’6-¾”, and 9’6-¼”
This installer averted a major problem by taking the time to check the length
of the identical number of patterns, before he installed the 9’9”, 7 pattern
count to the 9’ 6-¼”, 7 pattern count.
Photos 3 and 4 show a 1-5/16” bow in the finished seam that was not corrected
by during the installation.
Photos 5 and 6 illustrate installers using a Jiffy Steamer to release the
carpet and correct the seam bow nine months after the initial
installation.
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Photos
7 and 8 display carpet rolled back on both sides of seam. Note the fresh floor patch; this was
necessary because stay nails used by the previous installer caused several
areas of “spalling;” the chipping or flaking of the concrete substrate. It is always best to minimize the use of stay
nails in a concrete floor. This can be
accomplished by using a “floating” deadman and seam clamps.
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After
applying fresh adhesive, Photos 9 and 10 show the tremendous pressure placed on
the carpet that was softened by steaming.
Always retract the teeth on the mini- stretchers and kickers, and use a
cottonhead on the powerstretcher and deadman combination. This allows the pressure of pattern alignment
to be distributed in a method that causes less tearing than is caused by using
the retractable teeth in the pattern alignment tools.
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Photo
11 displays carpet that was torn by the initial installers because they did not
retract the teeth in the knee kicker when the initial pattern alignment was
attempted.
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Photo
12 displays a 1-5/16” bow straightened out on the right hand side. Note the
distortion on the left side of the straightedge. Notice the steamer going far beyond the
freshly glued seam area because it was necessary to align and straighten the
1-5/16” bow across 8 or 9 feet; not just the 3’6” to 4’ of the seam we
reglued.
Direct Glue Specifics
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When
measuring and preparing a bid for a direct glue-down install, this is the time
to prepare for the entire job.
1. You must know the:
• Carpet
• Fiber
• Dye method
• Secondary backing
• Pattern match
• Pattern elongation
• Bow and skew tolerances
• Type of adhesive required
• Trowel size required
• Acclimation time
• Manufacturer’s recommendations
2. You also must know the:
• Substrate
• Previous floor covering
• Calcium chloride or RH test
• pH test
• Slab temperature
• Porosity
• Composition
2. And know the:
• Layout
• Lighting sources
• Traffic patterns
• Seam placement
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It
is very important to explain and review with your customer why you recommended
the placement of seams in the areas. Get
the customer’s approval! Involving the
end user in these decisions helps give them ownership of the choices that you
both made.
Speaking of ownership, as professional installers, we should take ownership of
every building in which we work. This is
our “artwork” on display. Be proud of
it!
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