Posts Tagged ‘dye lot’

Need a Little Reading Material in the Bathroom? ??

November 2, 2018


What fun wallpaper! This is very similar to grasscloth. But, instead of using natural grasses and reeds, this material is made of strips cut from magazine pages, rolled and folded into long narrow strips, and then sewed onto a paper backing. In some of the columns, you can actually read the words!

There is a similar product made from old newspapers – appropriately named “Yesterday’s News.”

I hung this in a powder room in a new, contemporary home in the Rice Military neighborhood of Houston. The homeowner, Cristin Wells, is an interior designer http://www.wellsdesignedhome.com/ who recently moved here from Chicago (not far from my hometown of St. Louis!), and brings her sophisticated playfulness here to the Bayou City.

This product is similar to grasscloth in that the seams are very visible. So I engineered the room to have seams fall evenly spaced on each wall, which we call balancing, and which gives a pleasing effect.

In addition, the material can be shaded, or paneled, which means there can be a noticeable color difference between strips, even if they come off the same bolt. In the third photo, you see how I have rolled the paper out on the floor, to check for shading / paneling, so the homeowner will be aware of this issue, and so I can plot how and where to use the various strips.

Indeed, before consulting with me, the homeowner initially purchased two bolts of paper; when I measured the space I told her that she needed five more. The additional bolts arrived in a different run. Run and batch and dye lot numbers are important – all bolts from the same run or batch were printed at the same time with the same batch of ink, and will generally be pretty much the same shade. Papers from a different run will be a slightly different shade, and will be very noticeable if placed next to one another on the same wall. This is true even with this recycled magazine page material – see the third photo – although instead of printing with ink, the ladies who manufacture this stuff (usually in China or somewhere in Asia) are grabbing handfuls of magazine pages. As you can see, color variations are still quite possible / probable.

In addition to the 10′ high ceilings, the room had a few features that made the install tricky. One was a deeper than usual vanity, which was difficult and somewhat dangerous to reach over to access the wall. This was also a “floating” vanity, which hung suspended on the wall with a short space underneath it that wanted to be covered with wallpaper. Contorting myself under a 30″ deep vanity into a 5″ high space to stick a couple of strips of paper to a rear wall that no one would ever see questioned my sense of reason – but I could not imagine leaving the wall unpapered, so I “got ‘er done!” Sorry, no photo.

Being a contemporary styled home, the window was recessed with a 1/2″ return,. This meant that I had to bring the paper to the edge of the window, and then wrap a mere 1/2″ around an outside corner. The paper was thick and didn’t want to make this turn, and, when it did, it didn’t want to stay stuck – it kept trying to lift up. Wetting the paper helped soften it so it was more agreeable to making these turns, and in some areas I also used a razor blade to make light horizontal slits in the material, right on the edge of the corner, to reduce tension and allow it to turn more easily. Sorry, no photo.

Speaking of making cuts … This stuff was thick and hard to cut, so it took a lot of pressure and several swipes to make many of the cuts, even with a brand new razor blade. When I trimmed the material horizontally at the ceiling and floor, the strings that held the folded magazine pages to the backing were cut also, and they came loose. That meant that there was nothing holding the folded magazine pages to the paper.

It turns out that each of those horizontal strips of folded magazine pages contained about 6 layers of paper, each folded accordion-style. Threads were sewn on to hold them to the backing. But once the threads were cut, the accordion-folded papers unfurled, spread apart, and pushed away from the backing. So when you looked at the ceiling or floor lines, you saw a puffy ridge running the width of the strip.

What I ended up doing was to go up to the ceiling and then down to the floor edges, gently pry apart the fanned layers, and use wallpaper paste to adhere them to one another. I had to get sufficient paste behind each of the six layers, for the entire 3′ width of each strip, press them back together, hold them until the adhesive tacked up – all without getting any paste on the paper or on the ceiling.

All of the above added a lot of time to this job, and I didn’t leave until 9:30 p.m. But the room looked great when I was finished. From its initial uninspired dull grey paint job to the colorful and quite unexpected recycled magazine pages covering the walls, this powder room has experienced a major transformation.

The wallpaper is by Seabrook, which has been purchased by York. Both are wonderful brands.

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Run Away From Two Different Runs

March 7, 2017
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Look at the number right next to my pencil, and then look at the corresponding number below it. These two bolts of wallpaper have two different run / batch / dye lot numbers, meaning, they were printed at two different times, from two different batches of ink.

This means that they can be slightly, or even VERY slightly different in color. But even a slight difference in color can be eye-jarring on the wall, when you have two 9′ strips of wallpaper next to one another.

 

Shaded Grasscloth

March 10, 2016

Grasscloth, Shaded
This grasscloth displays what we call “shading” – slight difference in color between strips.

Additionally, often the dye will be darker on the right and left edges of the paper, than it is in the center.  Sometimes, the color difference starts horizontally in the middle of a strip.

This paper is still on the roll. Imagine how it will look on your wall.

When each strip on wall is a slightly different color, we call that “paneling.”

All these bolts are the same run number / dye lot, meaning they were printed at the same time with the same batch of ink.

This is not considered a defect. It is what the manufacturers call “the inherent natural beauty of the product.”

They will not replace material that looks like this.

Not all grasscloth looks this bad, but many do. If you choose any sort of natural material, be prepared for your walls to look like this.

This brand is Schumacher.

Color Difference in Grasscloth

November 27, 2015

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Here are two strips of grasscloth from the same run number / dye lot – meaning that they were printed at the same time from the same batch of ink. Notice the very visible difference in color between the two strips. Dry, on my table, the difference is noticeable. Pasted and up on the wall, the color difference can be jarring.

This is called “paneling” or “shading,” and is considered standard / acceptable when decorating with grasscloth. As the manufacturers put it, it is part of the “inherent natural beauty of the product.”

Same Grasscloth; Different Colors

November 15, 2015
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The grasscloth on the right was bought a year or so ago. It was left over and the homeowners wanted to use it on a new project. They needed additional paper to do the space, and so ordered a new bolt of paper. As you can see, there is a noticeable difference in color and texture between the two bolts, manufactured at different times. This is known as “run number” or “dye lot.”

It is also called “shading” and “paneling,” which refers to the difference in color between strips on the same wall. I had enough paper to cut all my strips from the new bolt, so there was minimal color difference on this project.

Runs and Dye Lots … Have Me Measure FIRST!

April 23, 2014

I recently did a bid where the homeowners already had their paper. The problem was, they had grossly underestimated how much paper they needed. They had a total of 5 single rolls, but the job actually called for something like 26.

This is a special problem with their selections. They had chosen some quite pretty custom made, very high end papers, made to order out of state.

The problems are many and are serious. Besides having to order quite a bit more of the very expensive paper, chances are the new paper will not match what they already have, so they will have to throw away that paper and buy even more.

When paper is made, there is a “batch,” “dye lot,” or “run” number, meaning all the paper printed at that time came out of the same “batch” of ink. It’s important to use paper all from the same run. Papers printed at a different time from a different run will have a very slight color variation, because the dyes and inks were mixed at a different time.

Will this matter? You bet! If you have to use a “broken run,” it’s best to keep different runs on seperate walls. You don’t notice a slight difference in color so much, because light hits one wall differently from how it hits another wall.

The bad part about this is that if you have to split a strip of paper, as you often do, you can’t use half of the strip on one wall and then on the second wall, and then start with a new run, because the color difference WILL show when strips are next to one another on a flat wall. You can never put different numbered runs next to one another on the same wall – the difference shows as clearly as if you used strips of totally different colors. This means you end up having to buy even more paper, to allow for the difference in dye lots.

Four Bolts, Three Runs

December 5, 2012

Digital Image Here we have Runs AAA, CCC, and ZZZ. What’s wrong with that?

Run numbers, or dye lots, refer to when the wallpaper was printed. All paper that was printed at the same time will have the same run, batch, or dye lot number. Because there can be slight variations in color the next time they mix up a caldron of ink, the manufacturer marks each batch with a number.

Because of the slight variations in color, it’s important to use all the same run number on a wallpaper job. The exception is when you can “break” a run, at a corner, for instance. You can use different runs on different walls, because light hits each wall differently, and your eye expects to see a difference in color. But you can NEVER put two different runs next to each other on the same wall – you are sure to see the color difference along the entire length of the strips.

You can use broken runs in certain instances, but it requires a lot more paper.