It depends on why you are framing it, what material the serigraph is on (cloth or paper, or something else...), and how long you want it to last. The main reason for glass in framing is usually protection from people... touching an artwork can sometimes hurt it over a long period of time. If the concern is only to display the silkscreen print, then personal preference rules. See this page for other matting and framing discussion: http://www.princetonaudubon.com/HTML%20Pages/matting_and_framing.htm Most paper products should be framed with glass, this is mainly for protection from airborn pollutants. Most framers will advise that you space the glass with either a mat or a spacer.
When photographs are placed in a frame with glass, they will stick to the glass eventually because of temperature and humidity changes. The simple process of adding a mat to separate them from the glass eliminates this possibility. Once the photographs have stuck to the glass, they can not be removed without damaging them. If the frame falls and the glass breaks, it will also split the photograph. If you choose to have these photographs copied for other family members etc., they must be photographed thru the glass or pieced together if the glass has broken, a new photograph taken, and restoration work done where the cracks, tears, distortion and discoloration have altered the original image. Inkjet prints are another problem as without the mat, they will actually transfer the ink to the glass.
A metal or glass frame would be best.
beveled side up
You put the seal on the glass then put the window in the frame. This eliminates the pressure on the glass. IT is easier to run a glazing tool around the metal frame without damage than it is to run it around the glass.
If you know who made it the factory should be able to supply. If it is stationary and double paned then most glass companies should be able to supply a new glass. Should be able to install new glass in old window even if the frame in solid around glass. There is always a way to replace any window glass.
Always a challenge to do it while still in frame. I've had fairly decent success with digital pictures and the use of editing software to remove flaws.
A large, expensive oil painting should be framed under glass after being stretched on a frame. The paint will last longer if the painting is kept out of direct sunlight.
You don't, you need to buy a new sash, (this is the glass and frame around glass) In the bottom corner is info, copy the info, measure the visible glass, this is the glass you can see, not including the frame. The you need to see what grills you have, outside,inside, or inside of glass, number of squares. Now what color the outside frame is, inside frame is, and grills. Take this info to an Anderson dealer and but the new sash.
hi
It is called a : "Pane"
The bevel should be up; with bevel down the glass top is not making full contact with the supporting edge on the wood frame.
If you are referring to the sight glass, the liquid beneath the glass should flow clear without bubbles when properly charged with refrigerant.