Summary:
This 3,250-word article explains ninety different terms that are used when hanging wallpaper or other wallcoverings. It includes information on types of adhesives, pattern matching, adhesive qualities, hanging techniques, tools, and more. It is designed as a compliment to the article titled “Understanding Wallpaper Terms – Types and Characteristics.”

Details or Sample:
Hanging wallpaper is difficult enough, especially for beginners, without trying to figure out all the different terms that are used. If you’re unsure of the difference between a drop match and a random match, bridging liner and underliner, or cross seams and butted seams, then look no further.

Accordion Folding
According folding is a type of booking where the paper is folded back and forth. For more information, see booking.

Activator
An activator is a substance that is used to activate the paste on prepasted wallpaper. Activators usually have additives that increase adhesion, slip, and work time, making installation easier.

Adhesive Aeration
Wallpaper paste that is filled with miniature air bubbles. Adhesive aeration is usually caused by whipping the adhesive too vigorously. Using this paste can cause small blisters to form under the wallpaper, especially under non-breathable wallpaper.

Adhesive Penetration
Adhesive penetration is the process where wallpaper adhesive soaks into the wallpaper substrate during the relaxing or booking period.

Adhesive Wrinkles
Wrinkles or ridges that occur after installing a paper are known as adhesive wrinkles. They are usually caused by paper expansion and can be prevented by adequately booking the paper before hanging. Adhesive wrinkles normally dry out on their own after a couple of days.

American Single Roll
An American roll is wider than a Euro or metric roll, which makes it harder to handle but causes fewer seams. An American roll is usually twenty-seven inches wide and will yield between thirty-four to thirty-six square feet of material, which is twenty-five percent larger than metric rolls.

Batch Numbers
The run numbers indicate when a roll of wallpaper was printed. All rolls with the same number were printed at the same time. To ensure color uniformity, all rolls should have the same run number. These are also known as run numbers and dye lot numbers.

Blank Stock (Blankstock)
Blank stock is plain paper that is hung on the wall, usually horizontally, before applying the wallpaper. Applying blank stock will provide a smoother surface for the final wallpaper and help reduce gapped seams and blisters. It comes in a variety of weights and can be used on almost any surface. It is also known as underliner or liner paper.

Blister
Blisters are small bubbles or air pockets that form underneath the wallpaper during installation. Blisters can be caused by inadequate soaking or booking time, room temperatures below fifty degrees, adhesive aeration, improperly prepared porous walls, and trapped air between the wall and the paper.

Bolt
A continuous roll of wallpaper that is equivalent to two or more rolls but packaged as one unit. Bolts are also known as double rolls or triple rolls, depending on the length.

Booking
Booking is the process of folding without creasing a strip of wallpaper that has just been pasted, giving the adhesive time to soak into the paper without drying and allows the paper to relax. Paper can be folded by bringing the bottom and top sections into the middle and then rolling the strip or accordion style (see accordion folding). Booking helps prevent the paper from expanding on the wall, which can cause blisters and cause the seams to show. Booking time varies depending on the type of paper and manufacturer.

Bridging liner
A porous wallcovering that is designed to cover irregularities of a surface before the wallpaper is hung. It is typically used brick or paneling. Liner paper can be added over the bridging material for a smoother wall surface.

Butt Joint or Butted Seam
Two wallpaper strips that are laid next to each other so that the edges touch but do not overlap.

Cellulose Paste
Wallpaper paste that I derived from wood pulp, cotton, plants, or similar material. It is odorless and nonstaining. Typically used for non-vinyl wallcoverings such as grasscloth, burlap, linen and bamboo. It is also very good for murals.

Clay-based Adhesive
Clay-based adhesives contain heavy solids, usually starches, which improve its adherence qualities. It is typically used for heavier papers because it can cause staining or cause the ink to flake from the paper.

Cross Seaming
Cross seaming is when wallpaper liner is installed horizontally (known as railroading) while the decorative wallcovering is installed vertically. Cross seaming helps ensure that seams do not overlap, which results in a more secure adhesion.

Centering
Hanging the dominant part of a wallpaper pattern so that it is the focal point of the room is known as centering.

Chalk Line
A chalk line is used to establish a vertical plumb line on a wall. It is usually made using a string covered in chalk dust that is pulled tight and snapped against the surface.

Dado
The Dado is the area between the chair rail and the baseboard on a wall. It is typically equal to one-third of the height of the wall.

Dead Corner
The spot in the room where the last mismatched sheets of wallcovering are hung is known as the dead corner. It is also known as the kill point.

Deglossing
Deglossing is the act of breaking down a glossy surface in order to help wallcoverings adhere better to the surface.

De-lamination
When the backing begins to separate from the vinyl facing on a piece of wallpaper it is known as de-lamination. It is usually caused by soaking or booking a piece for too long.

Directional Print
A directional print must be installed in a particular direction in order for the pattern to be aesthetically pleasing.

Double Cut Seam or Double Cutting
Double cutting is the process of overlapping the edges of two adjoining strips of wallpaper and then cutting through the overlap, which makes double cut seams. The process is usually done by professionals when the pattern does not need to be matched. This is also known as an overlapping butt joint.

Double Roll
A double roll is a continuous roll of wallpaper with a length that is equivalent to two single rolls. Most wallpaper is priced as single rolls but sold as either double or triple rolls.

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Written by: DarcyLogan
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