|
|
|
|
|
Frank S. Welsh [Welsh Color & Conservation] specializes in analytical and consulting services for a number of areas. We offer expertise in the research and analysis of all types of paint, and wallpaper finishes for the architect, engineer, curator, historic site administrator, contractor and homeowner. |
|
Typically, we visit the building to conduct an overall investigation and sampling of the interior and/or exterior. In this approach, the most thorough and accurate evaluation of historic finishes can be accomplished. However, for those who need only a few samples analyzed and do not require our expertise for an on-site investigation, you can take your own samples to send to us for microscopical analysis. For such projects, our publication, the PaintpamphletTM, which is a "how-to" booklet, gives detailed and illustrated instructions on investigation and sampling procedures. |
|
Laboratory analysis is done with stereo, polarized light and/or scanning electron microscopes and spectrophotometers to assess and identify: |
|
|
|
|
|
|
Layering sequences: to distinguish prime and finish coats, dirt layers and decorative painting. |
Crossection photomicrograph of a multi-layered paint sample
|
|
Types of coatings: such as oil, distemper, whitewash, latex, varnish, shellac and wallpaper. |
|
Colors: matched to Munsell and/or paint company color systems. |
|
Composition: |
|
|
Pigments: from paints on any surface, including wallpapers. |
|
Fibers: from rag or wood pulp wallpapers and other types of wall coverings. |
|
Particles: starches, metals, molds. |
|
|
Appearance: reflectance or gloss level. |
|
Relative age of each coating. |
|
|
If you would like to speak with someone about the specifics of your project, please give us a call. |
|
|
|
|
|
|