About two years ago, we started thinking about moisture measurements quality and consistency. We established a development team, and one of the outcomes—in addition to internal guidelines and changes to reporting procedures—was a quality system that serves as a commitment to the construction site regarding how we conduct measurements. In this blog post, I aim to summarize the most essential aspects of the quality system, which we use to ensure high-quality and timely measurements at construction sites.
At renovation sites, we primarily test concrete slabs to ensure they are safe for covering with materials such as laminate, hardwood flooring, waterproofing, or other materials.
Measuring Instruments and Calibration
We use Vaisala relative humidity sensors to measure the workability of concrete castings. The sensors are calibrated once a year. In addition, we continuously monitor the sensors for any discrepancies between them.
Measurers and maintaining professional competence
A Eurofins-certified structural moisture surveyor is always responsible for on-site measurements. The person conducting the measurements has always received comprehensive training in moisture measurement. The training includes theory on structures and building physics as well as practical training on construction sites. All of our moisture inspectors are enrolled in a certification course at the start of their employment. We maintain and develop our measurement staff We continuously develop our expertise. We regularly organize training sessions where our staff is trained by both our own experienced technicians and external trainers. Our staff also participates in other supplementary training as needed.
Research Methods and Scope of Measurement
At the start of site measurements, a measurement plan is drawn up in collaboration with the site. Measurement points are selected to ensure a comprehensive sample of the coating areas to be assessed. The sample should always include the structures that are most difficult to dry. Once these are dry, it can be assumed that the structures that dry more easily are also sufficiently dry. If puddles or water damage are observed during the course of the project, efforts are made to include these locations in the measurement sample as well.
Ensuring a smooth workflow
Before surveying begins at the construction site, we maintain active communication with the site to ensure that surveying starts on time, provided the client has submitted the site information in a timely manner.
We will provide guidance to the construction site throughout the measurement period regarding the drying of structures, and we will offer advice and recommendations on measures to ensure that the structures dry effectively.
The construction site is responsible for designating safe measurement locations where, for example, there are no pipes running through.
At the end of the site visit, the surveyor will present the measurement results, observations, and recommendations for action to the site team and provide a summary of the measurement results
At the end of each measurement visit, the surveyor will always try to agree on the date and scope of the next visit. If no date has been set for the next visit, the surveyor will, as a rule, contact the construction site to ensure that the measurements are carried out on time.
The final report is prepared once all measurements for the building or section of the building have been completed. The surveyor reviews the data and writes a summary before the final report is compiled.
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