Tramex Flooring Moisture Inspection Kits

To quickly identify wet areas in floors, pinless Meters are easy to use. They offer the convenience of testing a large area quickly, and help you determine if further testing is required in certain spots. A pinless Meter may also be used to determine if water-born finishes are dry and ready for a second application.

A pin type Meter, on the other hand, is the best way to identify the exact location of Moisture in sub-floors. The key to finding hidden Moisture is to use an electrode with insulated contact pins. These pins read only at their un-insulated pin tips, allowing the contractor to drive the pins into the floor and through to the sub-floor, noting readings at each level of penetration.

Flooring strips or planks - and the sub-floor - should be brought to equilibrium before installation. Best results are obtained when the wood sub-floor is within 4% MC of the flooring, maximum.

If the floor is on concrete, especially a slab on grade, the challenge is to be sure that the slab is dry and not likely to pick up Moisture later on. Please refer to the Operating Instructions section under PRODUCT SUPPORT for more info.

In cold and/or dry climates, static charges may cause erratic Meter readings in the range below 8 percent. Measuring such high resistance under these conditions is difficult enough, but the winter months can make it more so. The analog Meter pointer "jumps" all over the scale or the digital display may flash erratic numbers. To minimize the effect of static:

• Try not to let the electrode cable dangle.
• Drive the electrode pins into the wood with the Meter turned off, and then turn the Meter on when you are ready to take the reading.
• After driving the pins, place your hands next to them on each side of the electrode to help discharge the static from the board.
• You can also try passing a damp cloth over the board's surface to pick up any static charges before driving the pins.

These suggestions are not guaranteed. However, depending on the conditions, any one of them can work, either alone or in combination with another.

Board width is not a limiting factor when using a pin type Moisture Meter. As long as the pins make good contact, the Meter can be used on anything from small dowels to wide planks.

For accurate results with a pinless Meter, the material you're testing must be at least the width of the scanning area on the bottom of the Meter. Otherwise the Meter will not make firm contact with the board and may provide inconsistent, unreliable readings.

With a pin-type Meter, these conditions are not a problem. Just drive the pins as you would normally, insuring firm, positive contact and detect unknown gradients.

Pinless Meters, however, need firm contact to a flat surface so their readings on uneven surfaces may be unreliable.

In order to find this out, you must use a pin type Meter with insulated contact pins. First, take several readings in the layer just below the surface; then make a series of core readings, closer to the center of the board thickness. After you have noted these readings, hammer the pins through the flooring material until you make contact with the sub floor.

If your readings throughout this process are uniform, then there is not a Moisture problem. If readings increase as you go further into the floor, and again in the sub floor, this indicates that the sub floor is a source of Moisture.

Delmhorst moisture meters are well known for their ruggedness and ability to withstand years of rough handling. Like any testing instrument, a little care goes a long way toward trouble-free service:

• Store the meter in clean, dry place
• Change batteries and pins as needed
• Keep the meter and electrode clean by using any biodegradable cleanser sparingly on external parts only.

If you have any further questions on using a moisture meter for flooring applications