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Tips for Architects & Designers

Preparation. Designers or clients who want to incorporate mosaics into new construction or a remodeling project should look at myriad examples to acquaint themselves with the breadth of possibilities and to gain a personal sense of what is most appealing. Books, magazines, and travel will help prepare for the plunge into the specification process in which design, materials, costs, and schedules of fabrication and installation must be sorted out and written down.

The Commissioning Process. If selection and purchase are made through a showroom, it might be possible to arrange a one-stop deal, in which the showroom staff teams up with an affiliated tile contractor and/or mosaic artist to present and discuss all the options, write up the order, make field measurements, fabricate, and install. Alternatively, an independent mosaic artist with her own resources may be contracted, especially for custom work. If the artist is local, she may install the work as well. More often, the mosaic is pre-assembled in the studio and then shipped to the site for installation.
 Issues of Quality: The Contract. The quality of a mosaic depends -- rather like a meal -- on ingredients, preparation, and presentation. As discussed earlier, different types of materials are best suited for specific applications. Examine and evaluate the proposed mosaic materials; retain reference samples. If planning custom imagery, first discuss the general goals and ultimately, the specific motifs and placement of the mosaics. The mosaicist 's portfolio and other reference books can help when formulating the design. Today it is easy to carry out this process via telephone and internet -- images and ideas can be exchanged speedily at any distance. Once the general parameters and budget have been established, the mosaicist (or another design professional) will create preliminary sketches for discussion and possible revision and then final working drawings.  "Byzantine Fantasy" mosaic
The fee required for this work is money well spent. The design drawings should be to scale, indicating (in selected details) both the module sizes and width of grout joints. When viewed with photos of previous work, these drawings should accurately predict the final result.

"Byzantine Fantasy" detail is shown during the mounting process to illustrate the "jigsaw-puzzle" method of panel assembly. The wide joints disappear during installation.

If a strong sense of movement is desired, specify that the tesserae be cut into elongated rectangles; tesserae cut to "squarish" shapes tend to produce a more static feel. Rougher surfaces, irregularly shaped tesserae, and wider grout joints all contribute to a more rustic mood; tight grout joints and uniform smaller tesserae with polished surfaces give a more refined tone. Insist on a thorough contract that itemizes the various components of the project -- scope of work, budget, schedule, etc. -- and delineate responsibility for each component. For example, who reinforces the wall to eliminate flex: the mosaicist or the owner 's contractor? This signed agreement reduces anxiety by letting everyone know where they stand. Budget
Calculation of a project budget entails complete analysis of factors that are only listed here: 1. Size (discounting possible economies of scale); 2. Complexity of design (detail of imagery, size of tesserae); 3. Cost and workability of selected materials; 4. Mounting, delivery, and installation costs and complexity; and 5. Schedule (rushing incurs increased expenses). The mosaicist will often compute direct costs and estimated labor time for one figure, then compare it to a price-per-square foot calculation that has been worked out on comparable projects.

Avoiding Common Mistakes
To allow for the waste that is inevitable while installing fields and borders in a complex layout and around built-in features, extra material should be specified in the initial contract. Some materials, like handmade ceramics and natural stone, may show considerable variation. This is normal, but needs to be accounted for so that all the darker material, for example, is not concentrated in one area. Alternatively, glass and ceramic mosaics -- and even certain stones -- are uniform in color. When planning fields and patterns, specify some mixing of similar colors to liven up the effect.

Installation
There are 1,500-year-old mosaics that are in great condition; others fail after a few months. Why? Usually the installation is the cause. Paranoia is unnecessary, but it 's a good idea to inoculate yourself against foreseeable hazards. Ask the mosaicist and/or installation contractor what problems they anticipate; establish a plan to deal with them; and incorporate these tasks into the contract. As with tile, stone, or wallpaper, beautiful materials can be utterly spoiled by poor installation. Mosaic pictures that may represent many weeks of work are often finished in the studio -- mounted on rigid cementitious panels, grouted, and sealed. The finished product can then be inspected either in person or via photos prior to shipping.

     

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