Great experience with Colin and Rob from Radon West. Highly recommend. The office team sent useful nformation packs before the job to prepare for the day. On site, Colin again explained the process with consideration, and provided updates along the way regarding what was found with the diagnostics, what was to be sealed, the positioning and sizing of the parts, fan, and outlet, and finally with the results. Mats were put down to keep the basement clean, and they left the basement as clean (or cleaner!) than it was before they started. As Colin told me it would be, the process was dust free, and there wasn't much noise throughout the day. They persevered to successfully seal a record-breaking sized hole in my basement floor, crawling into a tight squeeze area not easily accessed to get under the shower pan. The challenge with the hole, in particular, was much appreciated.