The ‘Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes’ was revised In February of this year, reducing the waiting time from 72 hours to 24 hours. This is a welcome development as accurate results can be attained in a shorter time.
In the restoration industry, the level of understanding of moisture in building materials is generally very high. However, there is a tendency to treat concrete with suspicion and it is not uncommon for waivers to be used to reduce liability for the drying contractor.
Moisture problems in flooring originate from various sources and can affect floor coverings in different ways.
When 25mm or 50mm of insulation in a flat roof was the norm, Thermal Performance was still regarded as a luxury by many. Clients often resented the additional cost; “Why can’t I just have a new waterproofing?”; “What use is that to my bottom line?” etc. However, increasing energy prices, fuel shortages, sustainability and demand for higher comfort levels now require more insulation.
ASTM F2170 is an excellent test for determining the actual moisture condition of a slab. As a result, this type of test is recommended by many international standards including ASTM, British Standards, and most Scandinavian standards, as well as being specified by floor covering, coating and adhesive manufacturers worldwide.
The goal of moisture detection in the water damage restoration industry is to identify and assess abnormally wet locations of buildings, structures and their materials so that the drying process can be measured, documented and carried out effectively and in an economical and efficient manner.