Delmhorst Instrument Accuscan - Manual (Page 10)

Testing EIFS (Exterior
Insulation & Finish Systems)
hMoisture intrusion problems in EIFS (also known as
synthetic stucco) stem from leaking window and door
frames, improper use of or lack of sealant, and faulty
installation of flashing.
hIf you suspect a problem take a visual inspection. Look for
gaps around windows, doors, air conditioning units, light
fixtures, hose bibs, dryer vents and other areas of potential
penetration. Also look for visible signs of water damage. If
you believe a problem exists, use ACCUSCAN as a quick
scanning method to determine the general location of the
moisture. Then use a pin type meter to better identify exact
problem areas and depth of moisture intrusion.
Helpful Hints When Using
ACCUSCAN to Measure
Non-Wood Building Materials
hThe 0-100 “reference scale” is for relative wet/dry
indications only. These numbers do not represent %MC.
hThe meter works best on smooth surfaces that are free of
loose debris and dust.
hReadings in concrete can be affected by rebar and
aggregate composition.
hThe entire sensor plate should be in contact with the surface
of the board. The sensor plate measures 2-1/2” x 3-1/2”.
hReadings obtained with ACCUSCAN, like pinless moisture
meters in general, are affected by the amount of pressure
the sensor plate makes with the material under test.
Therefore, it is critical to apply and maintain uniform,
forward pressure to the meter when taking readings.
hThe sensor’s signal penetrates up to 3/4”. Keep in mind
that the material underneath or behind the material being
tested may influence the readings.
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