The only accurate method to measure moisture in a residential or commercial property is to intrusively probe the exterior wall sheathing. Probing allows access to structural areas where hidden elevated moisture causes problems. The testing shows the extent of the moisture and possibly shows where the moisture intrusion begins. We have ways to determine if water intrusion is happening in most all wall cavities. Stucco, brick, wood, vinyl, metal, you name it, we know how they are to be constructed and know how to test and assess each one. Fact: A leaky window will leak in any wall cavity.
Stucco testing protocols require drilling two small holes 3/16”- 1” apart in strategic locations to probe the sheathing/structure with a protimeter moisture meter. All holes are sealed with a colored acrylic/silicone caulk and every effort is made to hide the holes and match the color of the sealing caulk. Testing does not cause damage to the home.
A report is generated showing what was found at each test site, with details of construction techniques, maintenance items and potential entry points for water.