You can choose from a vast range of mountboards from 1.4mm up to 4.1mm,
the deepest available. This is the most common form of frame for photographs and artwork on paper. Window mounts can hide damage that may have been sustained at the edge of a picture and/or crop the image. It is also possible to layer window mounts.
The artwork is attached to a backing - either an acid free mount board or, as we have undertaken for several clients, a custom painted board. We then insert a spacer between the board and the glass ensuring that there is a gap of at least 6mm between the art and the glass.
Float mounting in a box frame is particularly suited to artworks where contact with glass could result in damage. For example, pastels and mixed media.
The artwork is mounted on a hidden raised step, the depth of which can range between 3mm and 8mm, giving the impression of floating above the backing board. When lit from the front, a shadow is cast by the edge of the artwork. We find that this technique works particularly well with oil on board paintings (see our galleries) and ragged edge high quality paper (e.g. watercolour weight).
Typically used for posters and other low/medium value art. The art has no mount and is usually (unless fixed (often dry-mounted) to a backing board where a spacer can be used) laid directly against the glass.
Care needs to be taken when the surface of the artwork could adhere to the glass over time - e.g. gloss photos
Although most commonly employed with canvases, I have successfully used tray frames with board and float mounted art. The canvas/board is fitted inside a tray frame leaving a small gap around the edges. These frames are unglazed.
Oil paintings have a texture which glass can mask due to reflection. Clients often prefer a simple, plain wood frame (stained, waxed etc.). You can see several examples of this in our Colin Moss gallery.