为什么泡起来的地毯,也才5/6年哦, 必须尽早更换?
What Causes Carpet Rippling
By Mr Carpet Cleaner
Carpet Knee Kicker
Power Stretcher
Carpet Delamination
What Causes Carpet Rippling & Buckling
Are you wondering just exactly what caused your carpet to start rippling and what you can do about it?
Many times
carpet ripples will begin to appear in less than a year after they were initially installed.
Carpet rippling will sometimes happen in every room in the entire home while in other cases you will experience
wrinkles in carpet in just one area. To illustrate why
carpet buckles, one must understand a little bit more about
how carpet’s are installed in the first place.
In our first example we will look at
carpet that is stretched in, thus commonly known as a
stretch in carpet installation. First, wooden strips known as tackless-strip which have small “nail like” gripping pins protruding up from their surface at a slight outward angle, are nailed down to the sub-flooring around the edges of the room at a distance of roughly a finger’s width off of the baseboard. These pins penetrate through the backing layer of the
carpet and are what actually holds the
carpeting in place. Next, the pad is installed. If the sub-floor is wood, the padding is typically affixed to the floor using staples. In the case of concrete such as in a basement, an adhesive of some sort is generally used. Finally, the
carpet is attached to the tack-strip along one wall and
stretched and hooked on the tack-strip on the opposing wall. This procedure is continued around the entire perimeter of the room. Traditionally two tools are used for
stretching carpeting, knee-kickers and a power-stretchers:
The knee-kicker is a devise about 30” in length. It’s head grips the carpet while the opposite end is equipped with a cushion that is designed to be struck with the knee.
Rugs cannot be properly
stretchedwith a knee-kicker in a medium or larger sized room. The knee-kicker is primary intended to be used only as a means of positioning the
carpet. However, in small
carpeted areas such as closets, small hallways, etc. where a power stretcher cannot be used, the knee-kicker is used as a
stretching tool.
The power-stretcher is basically a lever which braces against one wall and extends the length of a room. At the far wall, a rectangular head grips the surface of the
carpet and by pressing down on a handle, there is a lever action applied which
stretches the
carpet with great force.
Common Causes of Carpet Rippling on a “Stretched In” Installation
·
Improper Stretching: The most common cause of
humps in carpeting that has been
stretched in is that the
carpet was never
stretched in properly to begin with. In small area’s the use of a knee-kicker alone may prove to be sufficient. However in medium and larger sized area’s, the use of a power stretcher becomes an absolute necessity. Unfortunately, a common shortcut used by many installers is to use a knee-kicker instead of a power-stretcher. The reason for this is that
carpet installers get paid by how many yards of
carpet they can install per day. Using just a knee-kicker is much faster and a knee-kicker will usually get enough tension to at least get the
carpeting to lay flat. The end result though, is that initially your
carpet may look great but might start
rippling within anywhere from a few weeks to a year or two after installation.
TIP: Within the first year after installation, if you start to see signs that your
carpet is rippling, call the company you purchased it from immediately. In many cases you can get them to send the installer back to
remove the ripples free of charge.Remember, the Squeaky Wheel Get’s the Oil here !! After the first year however, you will likely be out of luck and are better off hiring a company that specializes in correcting the types of problems that installers typically make. One such reputable company that provides
carpet stretching in Bergen county NJ is Clean All of North Jersey. Read their reviews and find out more about
carpet cleaning in Bergen county NJ.
Other Causes of Carpet Rippling on a “Stretched In” Type Installation
·
High humidity: The humidity isn’t really the cause of the problem here. What’s actually happening is that latex materials used in the backing of the carpet absorb moisture. This causes the latex to expand and can cause
carpet buckling if there is not sufficient tension on the
carpet. You may have noticed that if you have visible
ripples in your
carpet they can look worse on humid days or you may get
humps in your
carpet that disappear when the humidity returns to normal. Many times
steam carpet cleaning, which uses hot water, can cause your
carpeting to
buckle severely when you previously didn’t see any sign of a problem. Although the cleaner usually gets blamed for this, they are not at fault (except in the case of improper cleaning leading to excessively long drying time). Once again the cause is insufficient tension on the latex containing
carpet backing brought to light by the high levels of moisture present from the
cleaning. Usually, once the
carpet dries fully, the
buckles will settle down again.
Loose, missing or damaged tackless strip: Many times
carpet is rippling upbecause there is nothing to hold it in place. It is quite common to find loose tackless strip on concrete sub-floors. Securing the strips to the concrete with nails can be difficult depending upon the quality of the concrete and how the concrete was cured. This can also happen on wood sub-floors if the amount of tension on the tackless strip is to great. In larger rooms and on concrete sub-floors the width of the tackless strip should be doubled to provide a greater surface area to grip on to thus avoiding this problem.
Another common scenario that leads to missing tackless strip is when you have a room adjoining a
carpet remodeled and a tile or wood floor installed. It is typical to find missing tackless strip along the adjoining edge because either the installer doesn’t consider it part of the job he is doing to re-secure the
carpet or he just simply may not know any better!
Dragging Heavy Furniture: You should make it a point to never drag any heavy furniture across the surface of a
carpet. The tackless strip that holds the
carpet in place has little nail-like spikes that grip the backing of the
carpet. The force excerpted by dragging a heavy object across the surface can easily be enough to rip the
carpet right off the tackless strip, damaging the
carpet backing or loosening the strip in the process. Also some
carpet fiber types such as
olefinhave a very low melting point and the heat generated by dragging an object over it can be enough to melt it causing permanent damage in the form of a line across the surface which cannot be removed by
carpet cleaning.
Wrong Padding Incorrect pad thickness or density. If the padding is too thick, in some cases it can cause the
carpet to disengage from the tackless strip thereby losing tension. A thick, low density pad can cause delamination.
Delamination:This is the process of latex between the primary and secondary backing layers of a
carpet breaking down and allowing the top layer where the
carpet fibers are attached to bubble up. Most of the time it is due to a defect in the mixing or application of latex in the manufacturing process.Other causes can be excessively thick, low density padding, heavy equipment being moved frequently over the
carpet, improper use of solvent spotters or petroleum bases spills on a
carpet such as lamp oil for example.
Carpet that remains wet for long periods of time is susceptible to delamination.
Age: Carpet’s can eventually
stretch due to normal factors such as the compression of padding in high traffic area’s which allows more flexing of the carpet backing causing it to “Relax” as well as the normal decomposing of the latex in the backing materials with age.
In our next example, there is no tackless-strip and no padding is used, so the
carpet cannot be
stretched in. Instead the
carpet is glued directly to the sub-floor. This is known as “direct glue down” installation. In both
residential and commercial setting’s it is found primarily over concrete sub-flooring such as in a basement area. There are advantages and disadvantages to this installation method. In the case of a flooded basement for example, padding presents a major problem in that it acts like a giant sponge and can hold a tremendous amount of water. This makes for a much more complicated
carpet repair. It will be more costly to dry and the chances of mold and mildew problems will increase if the job is not done properly. With the “direct glue down”
carpet installation method, since there is no padding involved, the water can be extracted from the
carpet and dried much more easily. The downside to this is that padding acts like a shock absorber and without it, the
carpet will definitely wear out much faster.
The last type of install we will cover and the least common is known as a “double glue down”. This is where the padding is glued directly to the sub-floor and the
carpet is glued to the surface of the padding. No tackless strip is used and the
carpet is not
stretched in.
Causes of Carpet Rippling in Glue Down Installations
Insufficient Adhesive:Ripples that appear
in carpet that has been glued down, are usually do to insufficient adhesive being applied to the sub-floor.
High Alkalinity:On a concrete sub-floor, high alkalinity can cause adhesive failure. An Installer should always test the ph of the concrete before gluing
carpet down. A ph range of 7-9 is considered acceptable. Anything higher than a ph of 9 can cause adhesion problems.
Improper use of Solvents: improper use of solvent spotters or petroleum bases spills on a
carpet such as lamp oil can cause
bubbles and ripples in carpet due to delamination of the
carpet backing and or adhesive failure.
Water: Glued down
carpet that is wet for an extended period of time can cause adhesion failure causing
carpet ripples.