- B
- Bolt
A double roll of wallpaper.
- Booking
The term refers to the process of folding wet, pasted wallpaper, back-to-back, and paste-to-paste, accordion style, then allowing it to sit for several minutes. Booking allows the paper to expand and relax before being applied to the wall, making the paper easier to maneuver on the wall and minimizing the risk of air bubbles and exposed seams.
- Border Spool
A wallpaper strip, usually narrower than a sidewall, installed horizontally in a room, to define, separate and accent areas of decoration. A coordinating border is often used to provide a finished edge where the sidewall meets the ceiling. It can also be used at chair rail height to separate one coordinating wallpaper from another, or as an architectural detail to create decorative panels in a room. By itself, on a painted wall, a border can be an inexpensive way to personalize a room or create a theme. Borders can refresh what’s already there or create a new look in little time. A border is packaged in a single spool of standardized length.
- Border Spool Size
Widths of borders will vary but the length of a border spool is usually 15 Feet.
- D
- Die Lot Number
Also referred to as Run number, is the sequential number assigned to a specific production run of wallpaper, guaranteeing uniformity of color match throughout that production run. Although most people never need to know the lot number, if you run short of wallpaper to complete the job, it is best to get the same run number for an exact color match.
- Digital
Used mostly for borders, and murals, digital printing is defined as one of several non-impact technologies where the image or pattern is created, manipulated and finalized by electronic systems and printed by a computer controlled printer.
- Digital Printing
One of several non-impact technologies where an image or pattern is created, manipulated, and finalized by electronic systems, and printed by a computer-controlled printer. The process begins with a digitally generated, scanned, or photographic image, created at a high resolution. Images are generally printed with UV-resistant inks on a washable, latex-reinforced substrate, which is clear coated for long-lasting protection. Substrates include a wide variety of vinyl-embossed textures, Mylar, acetate, canvas, window film, self-adhesive, natural and fabric materials.
- Double Roll
The standard size of wallpaper, also referred to as a bolt. Wallpaper is often be priced in single rolls and packaged in double rolls.
- Drop Seam Match
The design runs diagonally across the wall. The design is run so that every other stripe matches from ceiling to floor.
- E
- Embossed
A raised effect created by impressing a design into wallcovering using either pressure or heat.
- M
- Match Type
The pattern match and repeat refer to the wallpaper design. Most automated presses print wallpapers using an imprinted cylinder that repeats the design, creating both a vertical and horizontal pattern repeat. The horizontal repeat is created to match from strip to strip, and the vertical repeat allows for a design to print on the reel in endless repetition. Here are examples of various types of matches – straight, drop, and random.
Straight Pattern match runs straight across the all. The design of the wall covering is exactly the same from one strip/panel to the next. When hung every strip/panel is cut and hung the same from ceiling to floor.
Drop When a pattern match is drop, the design runs diagonally from the ceiling (it does not run in a straight line across the wall). The design is staggered so only every other strip is identical at the ceiling line. Random When a pattern match is random the wallpaper does not have to be matched at the seams. No matter how you position the wallpaper next to the previous strip, the pattern looks well. Typical examples of a random match are textures, grass cloths, and simple stripes. Note: as a general rule, every other strip should be reverse hung to reduce the possibility of shading. - Mural
An artistic or photographic rendering of a large scale single motif, intended to cover a full wall or large portion of a wall. The entire mural pictorial is usually composed of separate wallpaper strips, hung in proper sequence, which then combine to create the full image. Murals are a great way to create a dramatic feature wall and are usually available in two different sizes – a full wall size or a smaller size to be used above a chair rail. Artistic motifs range from serious subject matter and classic art to whimsical themes and fun designs.
- Mylar
Mylar is actually a trademark of DuPoint for a particular brand of polyester film. This film is applied to the decorative print of wallpapers which may have a paper, woven or non-woven, substrate for backing. Mylar wallpapers are often mistaken for foil wallpapers and are very similar in nature. Mylar is actually a polyester film that is metallized sheeting. Mylar will not tear very easily, but will burn. Foils will tear easily, but will not burn.
- N
- Non-Woven
Fabric backings in different grades offer improved wallcovering printing techniques while maintaining the tear strength qualities necessary for commercial installations.
- P
- Pre-Pasted Wallpaper
Pre-pasted papers have dried paste imbedded on the back surface and are activated when moistened by submersion in a water trough or by contact with a pre-paste activator.
- R
- Random Match
Does not require matching at the seams.
- Rotary Screen Printing
A high-speed production technique used to replace hand screen-printing. Ink is fed into the inside core of a rotary or round, screen mesh cylinder and an internal squeegee blade is used to press or apply the ink through the image area of the screen. The ink will not flow through the rotary screen where a resist has been used to block or seal the mesh. Rotary screen printing is used for designs where a bright, solid color laydown is required, or for expanded vinyl prints. Specially formulated ink is used to print the design, which then goes through a heat tunnel that activates a blowing agent, causing the ink to expand, and creating a three-dimensional look.
- Rotogravure Printing (Gravure or Intaglio)
This process provides the opportunity to achieve a complete, continuous color deposit ranging from 100 percent full tone down to almost a 5 percent tone. Gravure is a costly manufacturing process because the cylinder used requires copper plating and a special photochemical engraving or etching process. Printing is accomplished via tiny cells or ink reservoirs that are engraved into the surface of the print cylinder. In contrast to surface printing, the ink is held within tiny cells engraved into or below the cylinder surface. The deeper the cell, the darker the tone printed. By varying the size and placement of each cell, varying amounts of ink can be deposited onto the wallcovering by pressing the inked cylinder against the web. Pressure causes the ink to flow from within each cell onto the wallcovering. This process is the most versatile since it can duplicate a complete range of visual effects, and is able to give an almost photographic effect.
- Run Number
Also referred to as Die Lot number, is the sequential number assigned to a specific production run of wallpaper, guaranteeing uniformity of color match throughout that production run. Although most people never need to know the lot number, if you run short of wallpaper to complete the job, it is best to get the same run number for an exact color match.
- S
- Screen Printing (Silk Screening)
Accomplished with either flat or rotary hand screens. The design image area is reproduced onto a flat mesh screen held within a frame. The screen area is covered with a resist, such as wax, which plugs or blocks all of the screen openings, except in the area of the design image. Ink is then applied to the flat screen, and a rubber squeegee is used to push the ink along the screen surface, forcing it through the openings in the design area onto the wallcovering substrate. One screen is needed for each color. This process is most often used for specialty and customized products.
- Sizer
Wallcovering preparation that provides additional grip for better adherence. Often used in combination with a wallcovering primer, today many products on the market combine the primer and sizer together. These one-step ‘universal’ wallcovering primers are easier to use and are formulated to work on a variety of surfaces under varying conditions. Sealing the surface is also an important procedure to allow for future removal.
- Straight Seam Match
Pattern match runs straight across the all. The design of the wall covering is exactly the same from one strip/panel to the next. When hung every strip/panel is cut and hung the same from ceiling to floor.
- Surface Printing
Most often employed to reproduce a stencil-like effect, accomplished through the use of lightweight urethane print cylinders. The print design coincides with raised areas on the roller, obtained by removing or cutting away to leave the desired design elevated above the rest of the cylinder (like an ink stamp). Printing is accomplished by first applying ink onto the raised areas. The inked roller is then pressed against the material to be printed causing the ink color to be transferred from the surface of the raised design onto a moving web of wallcoverings. One roller is required for each color.
- U
- Unpasted Wallpaper
Unpasted papers require that a proper wallcovering adhesive be applied to the back of each strip prior to installing on the wall surface.
- V
- Veneer
Most wood veneer wallcoverings are laminated to fabric backing. They are usually made in sheets 18 to 24 inches wide and provided in any length up to 144 inches long. Due to characteristics relative to environmental and grain matching, wood veneers are used mostly in the office/conference room environment along with some other specialty areas, such as hanging around large columns. These products are applied with a special water based adhesive and demand delicate installation techniques.
- Vinyl
Man-made material used in the manufacturing of wallcoverings.
- W
- Wallpaper Primer
Chemical coating that protects and seals the wall in preparation for the installation of wallcoverings. Primers will seal out porous surfaces to prevent paste from absorbing into the wall, promoting better ‘slip’ during installation and better ‘grip’ afterwards.
- Wallpaper Sidewall
The term, sidewall, refers to a roll of wallpaper as distinguished from other wallpaper materials like borders or medallions. It can be defined as any repeatable wallcovering pattern that is intended to be hung vertically, strip by strip, in order to fully cover a wall. A wallpaper sidewall may use a ‘single roll’ size as a standard for pricing. This unit standard began as a way to simplify the pricing of nonstandard packaging of double, triple and quadruple size bolts. Today, almost all wallpaper sidewalls are packaged in double roll bolts and an effort is being made to make this double roll bolt as the new standard for pricing. However, just as many places still use the single roll standard as use the double roll standard. So make sure you know which standard you are purchasing in order to correctly calculate proper pricing and determine how many rolls you will need.
- Washability Rating
Every piece of wallpaper has a washability rating which is illustrated through a single symbol on the design’s label. If you do not follow the correct procedure relating to your paper’s washability, then this can lead to irreparable damage to the wallpaper itself. There are four main symbols that you may encounter in this category.
- Extra Washable
The symbol formed from three wavy lines identifies the paper as extra washable. This wallpaper can be used in kitchens and bathrooms as it is more resilient to damper environments. However, please do remember that it is not waterproof so must be kept away from direct water sources such as an area that may be affected by splashing water. Basically, don’t hang it next to a shower or sink.
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