RIA Moisture Meter & Hygrometer Use 2

Question 1

When using a pin-type moisture meter on drywall, where should the pins be inserted for the most accurate reading?

Accepted Answer

Through the paper and into the gypsum core

Answer

Pins must penetrate the paper facing and reach the gypsum core to measure actual moisture content within the board.

Question 2

A hygrometer reading shows 85% RH in a crawl space after a flood event. What does this indicate about drying progress?

Accepted Answer

Conditions remain at high risk and drying is still needed

Answer

85% RH far exceeds the 50–55% RH target for completed drying and indicates ongoing elevated moisture conditions.

Question 3

Which factor most directly affects the accuracy of a pin-type moisture meter reading in wood?

Accepted Answer

The species and density of the wood

Answer

Wood species and density significantly affect electrical resistance, so meters must be calibrated or corrected for the specific species being tested.

Question 4

What is the primary advantage of a non-penetrating (pinless) moisture meter over a pin-type meter?

Accepted Answer

It can scan large areas quickly without damaging surfaces

Answer

Pinless meters use electromagnetic fields to scan wide areas rapidly without leaving pin holes, ideal for initial surveys.

Question 5

When documenting drying progress, a technician records moisture content readings at the same locations each visit. What is this practice called?

Accepted Answer

Moisture tracking or monitoring points

Answer

Establishing and returning to fixed monitoring points ensures consistent, comparable data throughout the drying process.

(RIA) Restoration Industry Association Certified Practice Test