EMMA Testing Update

The EMMA division has completed tests showing the effectiveness of expanded metal used as a screen for openings.  For details of the three tests, see the links below.  The range of values for SHGC (Solar Heat Gain Coefficient) is from 0 to 1.  A window with no shield for solar gain has a higher rating approaching 1.  When a screen is added the value is reduced to less than one.  The EMMA solar heat gain test shows that the value for all three tests ranges between 0.1 and 0.5, meaning the heat gain reduction to one tenth to one half depending on the angle of the sun.

Test 1: AP2X4 .125 39% Open Unflat Aluminum expanded metal with a matte black powder coat oriented a horizontal position.  The Solar Heat Gain Coefficient for this material is 0.09 at a sun angle of 60 Degrees.  The material tested is not a standard expanded metal product, but a special design suitable for use as a sunshade that is readily available from member companies. Test 1 Report

Test 2: 1-1/2 .125 29% Open Unflat Aluminum expanded metal with a white powder coat oriented a horizontal position.  The Solar Heat Gain Coefficient for this material is 0.14 at a sun angle of 60 Degrees.  The material tested is not a standard expanded metal product, but a special design suitable for use as a sunshade that is readily available from member companies. Test 2 Report

Test 3: 3/4 .125 21% Open Unflat Aluminum expanded metal with a matte black powder coat oriented a horizontal position.  The Solar Heat Gain Coefficient for this material is 0.10 at a sun angle of 60 Degrees.  The material tested is not a standard expanded metal product, but a special design suitable for use as a sunshade that is readily available from member companies. Test 3 Report