DREW WILEY
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- Jul 14, 2011
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Bob - the problem with aluminum is where you display it. If it's on a perimeter wall of a poorly insulated building, or even on an interior wall with dramatic day/night temp or humidity shifts, then aluminum is a poor insulator and could lead to condensation and mildew in the frame sandwich. You really need to frame things for the specific climate it's going to as well as the micro-climate on the room itself. Of course, it's also wise to have some fome-core behind the aluminum to act as insulation, as well as plexi in front, and not real glass, because the latter is also a poor thermal insulator. Doing a true hermetic frame job is pretty expensive and requires some special tricks.